1 | ;;; -*- Mode: Lisp -*-
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2 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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3 | ;;;
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4 | ;;; Copyright (C) 1999, 2002, 2009, 2015 Marek Rychlik <rychlik@u.arizona.edu>
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5 | ;;;
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6 | ;;; This program is free software; you can redistribute it and/or modify
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7 | ;;; it under the terms of the GNU General Public License as published by
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8 | ;;; the Free Software Foundation; either version 2 of the License, or
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9 | ;;; (at your option) any later version.
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10 | ;;;
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11 | ;;; This program is distributed in the hope that it will be useful,
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12 | ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | ;;; GNU General Public License for more details.
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15 | ;;;
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16 | ;;; You should have received a copy of the GNU General Public License
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17 | ;;; along with this program; if not, write to the Free Software
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18 | ;;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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19 | ;;;
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20 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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21 |
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22 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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23 | ;;
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24 | ;; Load this file into Maxima to bootstrap the Grobner package.
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25 | ;; NOTE: This file does use symbols defined by Maxima, so it
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26 | ;; will not work when loaded in Common Lisp.
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27 | ;;
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28 | ;; DETAILS: This file implements an interface between the Grobner
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29 | ;; basis package NGROBNER, which is a pure Common Lisp package, and
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30 | ;; Maxima. NGROBNER for efficiency uses its own representation of
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31 | ;; polynomials. Thus, it is necessary to convert Maxima representation
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32 | ;; to the internal representation and back. The facilities to do so
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33 | ;; are implemented in this file.
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34 | ;;
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35 | ;; Also, since the NGROBNER package consists of many Lisp files, it is
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36 | ;; necessary to load the files. It is possible and preferrable to use
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37 | ;; ASDF for this purpose. The default is ASDF. It is also possible to
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38 | ;; simply used LOAD and COMPILE-FILE to accomplish this task.
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39 | ;;
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40 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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41 |
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42 | (in-package :maxima)
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43 |
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44 | (macsyma-module cgb-maxima)
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45 |
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46 |
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47 | (eval-when
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48 | #+gcl (load eval)
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49 | #-gcl (:load-toplevel :execute)
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50 | (format t "~&Loading maxima-grobner ~a ~a~%"
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51 | "$Revision: 2.0 $" "$Date: 2015/06/02 0:34:17 $"))
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52 |
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53 | ;;FUNCTS is loaded because it contains the definition of LCM
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54 | ($load "functs")
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55 | #+sbcl(progn (require 'asdf) (load "ngrobner.asd")(asdf:load-system :ngrobner))
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56 |
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57 | (use-package :ngrobner)
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58 |
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59 |
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60 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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61 | ;;
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62 | ;; Maxima expression ring
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63 | ;;
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64 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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65 | ;;
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66 | ;; This is how we perform operations on coefficients
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67 | ;; using Maxima functions.
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68 | ;;
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69 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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70 |
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71 | (defparameter +maxima-ring+
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72 | (make-ring
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73 | ;;(defun coeff-zerop (expr) (meval1 `(($is) (($equal) ,expr 0))))
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74 | :parse #'(lambda (expr)
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75 | (when modulus (setf expr ($rat expr)))
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76 | expr)
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77 | :unit #'(lambda () (if modulus ($rat 1) 1))
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78 | :zerop #'(lambda (expr)
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79 | ;;When is exactly a maxima expression equal to 0?
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80 | (cond ((numberp expr)
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81 | (= expr 0))
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82 | ((atom expr) nil)
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83 | (t
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84 | (case (caar expr)
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85 | (mrat (eql ($ratdisrep expr) 0))
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86 | (otherwise (eql ($totaldisrep expr) 0))))))
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87 | :add #'(lambda (x y) (m+ x y))
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88 | :sub #'(lambda (x y) (m- x y))
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89 | :uminus #'(lambda (x) (m- x))
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90 | :mul #'(lambda (x y) (m* x y))
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91 | ;;(defun coeff-div (x y) (cadr ($divide x y)))
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92 | :div #'(lambda (x y) (m// x y))
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93 | :lcm #'(lambda (x y) (meval1 `((|$LCM|) ,x ,y)))
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94 | :ezgcd #'(lambda (x y) (apply #'values (cdr ($ezgcd ($totaldisrep x) ($totaldisrep y)))))
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95 | ;; :gcd #'(lambda (x y) (second ($ezgcd x y)))))
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96 | :gcd #'(lambda (x y) ($gcd x y))))
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97 |
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98 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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99 | ;;
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100 | ;; Maxima expression parsing
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101 | ;;
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102 | ;;
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103 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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104 | ;;
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105 | ;; Functions and macros dealing with internal representation
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106 | ;; structure.
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107 | ;;
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108 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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109 |
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110 | (defun equal-test-p (expr1 expr2)
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111 | (alike1 expr1 expr2))
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112 |
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113 | (defun coerce-maxima-list (expr)
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114 | "Convert a Maxima list to Lisp list."
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115 | (cond
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116 | ((and (consp (car expr)) (eql (caar expr) 'mlist)) (cdr expr))
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117 | (t expr)))
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118 |
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119 | (defun free-of-vars (expr vars) (apply #'$freeof `(,@vars ,expr)))
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120 |
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121 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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122 | ;;
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123 | ;; Order utilities
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124 | ;;
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125 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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126 |
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127 | (defun find-ring-by-name (ring)
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128 | "This function returns the ring structure bases on input symbol."
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129 | (cond
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130 | ((null ring) nil)
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131 | ((symbolp ring)
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132 | (case ring
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133 | ((maxima-ring :maxima-ring #:maxima-ring $expression_ring #:expression_ring)
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134 | +maxima-ring+)
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135 | ((ring-of-integers :ring-of-integers #:ring-of-integers $ring_of_integers) +ring-of-integers+)
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136 | (otherwise
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137 | (mtell "~%Warning: Ring ~M not found. Using default.~%" ring))))
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138 | (t
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139 | (mtell "~%Ring specification ~M is not recognized. Using default.~%" ring)
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140 | nil)))
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141 |
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142 | (defun find-order-by-name (order)
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143 | "This function returns the order function bases on its name."
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144 | (cond
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145 | ((null order) nil)
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146 | ((symbolp order)
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147 | (case order
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148 | ((lex :lex $lex #:lex)
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149 | #'lex>)
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150 | ((grlex :grlex $grlex #:grlex)
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151 | #'grlex>)
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152 | ((grevlex :grevlex $grevlex #:grevlex)
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153 | #'grevlex>)
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154 | ((invlex :invlex $invlex #:invlex)
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155 | #'invlex>)
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156 | (otherwise
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157 | (mtell "~%Warning: Order ~M not found. Using default.~%" order))))
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158 | (t
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159 | (mtell "~%Order specification ~M is not recognized. Using default.~%" order)
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160 | nil)))
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161 |
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162 | (defun find-ring-and-order-by-name (&optional
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163 | (ring (find-ring-by-name $poly_coefficient_ring))
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164 | (order (find-order-by-name $poly_monomial_order))
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165 | (primary-elimination-order (find-order-by-name $poly_primary_elimination_order))
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166 | (secondary-elimination-order (find-order-by-name $poly_secondary_elimination_order))
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167 | &aux
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168 | (ring-and-order (make-ring-and-order
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169 | :ring ring
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170 | :order order
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171 | :primary-elimination-order primary-elimination-order
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172 | :secondary-elimination-order secondary-elimination-order)))
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173 | "Build RING-AND-ORDER structure. The defaults are determined by various Maxima-level switches,
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174 | which are names of ring and orders."
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175 | ring-and-order)
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176 |
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177 | (defun maxima->poly (expr vars
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178 | &optional
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179 | (ring-and-order (find-ring-and-order-by-name))
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180 | &aux
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181 | (vars (coerce-maxima-list vars))
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182 | (ring (ro-ring ring-and-order)))
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183 | "Convert a maxima polynomial expression EXPR in variables VARS to
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184 | internal form. This works by first converting the expression to Lisp,
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185 | and then evaluating the expression using polynomial arithmetic
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186 | implemented by the POLYNOMIAL package."
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187 | (labels ((parse (arg) (maxima->poly arg vars ring-and-order))
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188 | (parse-list (args) (mapcar #'parse args)))
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189 | (cond
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190 | ((eql expr 0) (make-poly-zero))
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191 | ((member expr vars :test #'equal-test-p)
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192 | (let ((pos (position expr vars :test #'equal-test-p)))
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193 | (make-poly-variable ring (length vars) pos)))
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194 | ((free-of-vars expr vars)
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195 | ;;This means that variable-free CRE and Poisson forms will be converted
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196 | ;;to coefficients intact
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197 | (coerce-coeff ring expr vars))
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198 | (t
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199 | (case (caar expr)
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200 | (mplus (reduce #'(lambda (x y) (poly-add ring-and-order x y)) (parse-list (cdr expr))))
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201 | (mminus (poly-uminus ring (parse (cadr expr))))
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202 | (mtimes
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203 | (if (endp (cddr expr)) ;unary
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204 | (parse (cdr expr))
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205 | (reduce #'(lambda (p q) (poly-mul ring-and-order p q)) (parse-list (cdr expr)))))
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206 | (mexpt
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207 | (cond
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208 | ((member (cadr expr) vars :test #'equal-test-p)
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209 | ;;Special handling of (expt var pow)
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210 | (let ((pos (position (cadr expr) vars :test #'equal-test-p)))
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211 | (make-poly-variable ring (length vars) pos (caddr expr))))
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212 | ((not (and (integerp (caddr expr)) (plusp (caddr expr))))
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213 | ;; Negative power means division in coefficient ring
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214 | ;; Non-integer power means non-polynomial coefficient
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215 | (mtell "~%Warning: Expression ~%~M~%contains power which is not a positive integer. Parsing as coefficient.~%"
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216 | expr)
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217 | (coerce-coeff ring expr vars))
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218 | (t (poly-expt ring-and-order (parse (cadr expr)) (caddr expr)))))
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219 | (mrat (parse ($ratdisrep expr)))
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220 | (mpois (parse ($outofpois expr)))
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221 | (otherwise
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222 | (coerce-coeff ring expr vars)))))))
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223 |
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224 | (defun maxima->poly-list (expr vars
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225 | &optional
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226 | (ring-and-order (find-ring-and-order-by-name)))
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227 | "Convert a Maxima representation of a list of polynomials to the internal form."
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228 | (case (caar expr)
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229 | (mlist (mapcar #'(lambda (p)
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230 | (maxima->poly p vars ring-and-order))
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231 | (cdr expr)))
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232 | (otherwise (merror "Expression ~M is not a list of polynomials in variables ~M."
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233 | expr vars))))
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234 |
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235 | (defun maxima->poly-list-list (poly-list-of-lists vars
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236 | &optional
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237 | (ring-and-order (find-ring-and-order-by-name)))
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238 | "Parse a Maxima representation of a list of lists of polynomials."
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239 | (mapcar #'(lambda (g) (maxima->poly-list g vars ring-and-order))
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240 | (coerce-maxima-list poly-list-of-lists)))
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241 |
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242 |
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243 |
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244 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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245 | ;;
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246 | ;; Conversion from internal form to Maxima general form
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247 | ;;
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248 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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249 |
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250 | (defun maxima-head ()
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251 | (if $poly_return_term_list
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252 | '(mlist)
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253 | '(mplus)))
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254 |
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255 | (defun poly->maxima (poly-type object vars)
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256 | (case poly-type
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257 | (:custom object) ;Bypass processing
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258 | (:polynomial
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259 | `(,(maxima-head) ,@(mapcar #'(lambda (term) (poly->maxima :term term vars)) (poly-termlist object))))
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260 | (:poly-list
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261 | `((mlist) ,@(mapcar #'(lambda (p) ($ratdisrep (poly->maxima :polynomial p vars))) object)))
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262 | (:term
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263 | `((mtimes) ,($ratdisrep (term-coeff object))
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264 | ,@(mapcar #'(lambda (var power) `((mexpt) ,var ,power))
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265 | vars (monom->list (term-monom object)))))
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266 | ;; Assumes that Lisp and Maxima logicals coincide
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267 | (:logical object)
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268 | (otherwise
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269 | object)))
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270 |
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271 |
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272 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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273 | ;;
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274 | ;; Facilities for evaluating Grobner package expressions
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275 | ;; within a prepared environment
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276 | ;;
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277 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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278 |
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279 | #|
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280 | (defmacro with-monomial-order ((order) &body body)
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281 | "Evaluate BODY with monomial order set to ORDER."
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282 | `(let ((*monomial-order* (or (find-order ,order) *monomial-order*)))
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283 | . ,body))
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284 |
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285 | (defmacro with-coefficient-ring ((ring) &body body)
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286 | "Evaluate BODY with coefficient ring set to RING."
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287 | `(let ((+maxima-ring+ (or (find-ring ,ring) +maxima-ring+)))
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288 | . ,body))
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289 |
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290 | (defmacro with-ring-and-order ((ring order) &body body)
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291 | "Evaluate BODY with monomial order set to ORDER and coefficient ring set to RING."
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292 | `(let ((*monomial-order* (or (find-order ,order) *monomial-order*))
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293 | (+maxima-ring+ (or (find-ring ,ring) +maxima-ring+)))
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294 | . ,body))
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295 |
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296 | (defmacro with-elimination-orders ((primary secondary elimination-order)
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297 | &body body)
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298 | "Evaluate BODY with primary and secondary elimination orders set to PRIMARY and SECONDARY."
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299 | `(let ((*primary-elimination-order* (or (find-order ,primary) *primary-elimination-order*))
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300 | (*secondary-elimination-order* (or (find-order ,secondary) *secondary-elimination-order*))
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301 | (*elimination-order* (or (find-order ,elimination-order) *elimination-order*)))
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302 | . ,body))
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303 |
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304 | |#
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305 |
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306 |
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307 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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308 | ;;
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309 | ;; Maxima-level interface functions
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310 | ;;
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311 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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312 |
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313 | ;; Auxillary function for removing zero polynomial
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314 | (defun remzero (plist) (remove #'poly-zerop plist))
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315 |
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316 | ;;Simple operators
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317 |
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318 | (define-binop $poly_add poly-add
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319 | "Adds two polynomials P and Q")
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320 |
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321 | (define-binop $poly_subtract poly-sub
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322 | "Subtracts a polynomial Q from P.")
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323 |
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324 | (define-binop $poly_multiply poly-mul
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325 | "Returns the product of polynomials P and Q.")
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326 |
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327 | (define-binop $poly_s_polynomial spoly
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328 | "Returns the syzygy polynomial (S-polynomial) of two polynomials P and Q.")
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329 |
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330 | (define-unop $poly_primitive_part poly-primitive-part
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331 | "Returns the polynomial P divided by GCD of its coefficients.")
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332 |
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333 | (define-unop $poly_normalize poly-normalize
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334 | "Returns the polynomial P divided by the leading coefficient.")
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335 |
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336 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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337 | ;;
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338 | ;; Macro facility for writing Maxima-level wrappers for
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339 | ;; functions operating on internal representation
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340 | ;;
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341 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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342 |
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343 | (defmacro with-ring-and-order (((maxima-vars &optional (maxima-new-vars nil new-vars-supplied-p))
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344 | &key
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345 | (polynomials nil)
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346 | (poly-lists nil)
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347 | (poly-list-lists nil)
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348 | (value-type nil)
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349 | (ring-and-order-var 'ring-and-order)
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350 | (ring-var 'ring))
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351 | &body
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352 | body
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353 | &aux
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354 | (vars (gensym))
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355 | (new-vars (gensym)))
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356 | "Evaluate a polynomial expression BODY in an environment
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357 | constructred from Maxima switches. The supplied arguments
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358 | POLYNOMIALS, POLY-LISTS and POLY-LIST-LISTS should be polynomials,
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359 | polynomial lists an lists of lists of polynomials, in Maxima general
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360 | form. These are translated to NGROBNER package internal form and
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361 | evaluated using operations in the NGROBNER package. The BODY should be
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362 | defined in terms of those operations. MAXIMA-VARS is set to the list
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363 | of variable names used at the Maxima level. The evaluation is
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364 | performed by the NGROBNER package which ignores variable names, thus
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365 | MAXIMA-VARS is used only to translate the polynomial expression to
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366 | NGROBNER internal form. After evaluation, the value of BODY is
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367 | translated back to the Maxima general form. When MAXIMA-NEW-VARS is
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368 | present, it is appended to MAXIMA-VARS upon translation from the
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369 | internal form back to Maxima general form, thus allowing extra
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370 | variables which may have been created by the evaluation process. The
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371 | value type can be either :POLYNOMIAL, :POLY-LIST or :TERM, depending
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372 | on the form of the result returned by the top NGROBNER operation.
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373 | During evaluation, symbols supplied by RING-AND-ORDER-VAR (defaul
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374 | value 'RING-AND-ORDER), and RING-VAR (default value 'RING) are bound
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375 | to RING-AND-ORDER and RING instances."
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376 | `(let ((,vars (coerce-maxima-list ,maxima-vars))
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377 | ,@(when new-vars-supplied-p
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378 | (list `(,new-vars (coerce-maxima-list ,maxima-new-vars)))))
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379 | (poly->maxima
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380 | ,value-type
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381 | (let ((,ring-and-order-var ,(find-ring-and-order-by-name)))
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382 | ;; Define a shorthand to RING
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383 | (symbol-macrolet ((,ring-var (ro-ring ring-and-order)))
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384 | (let ,(let ((args nil))
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385 | (dolist (p polynomials args)
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386 | (setf args (cons `(,p (maxima->poly ,p ,vars ,ring-and-order-var)) args)))
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387 | (dolist (p poly-lists args)
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388 | (setf args (cons `(,p (maxima->poly-list ,p ,vars ,ring-and-order-var)) args)))
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389 | (dolist (p poly-list-lists args)
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390 | (setf args (cons `(,p (maxima->poly-list-list ,p ,vars ,ring-and-order-var)) args))))
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391 | . ,body)))
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392 | ,(if new-vars-supplied-p
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393 | `(append ,vars ,new-vars)
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394 | vars))))
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395 |
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396 |
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397 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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398 | ;;
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399 | ;; Unary and binary operation definition facility
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400 | ;;
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401 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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402 |
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403 | (defmacro define-unop (maxima-name fun-name
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404 | &optional (documentation nil documentation-supplied-p))
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405 | "Define a MAXIMA-level unary operator MAXIMA-NAME corresponding to unary function FUN-NAME."
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406 | `(defun ,maxima-name (p vars)
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407 | ,@(when documentation-supplied-p (list documentation))
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408 | (with-ring-and-order ((vars) :polynomials (p) :value-type :polynomial)
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409 | (,fun-name ring p) vars)))
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410 |
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411 | (defmacro define-binop (maxima-name fun-name
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412 | &optional (documentation nil documentation-supplied-p))
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413 | "Define a MAXIMA-level binary operator MAXIMA-NAME corresponding to binary function FUN-NAME."
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414 | `(defun ,maxima-name (p vars)
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415 | ,@(when documentation-supplied-p (list documentation))
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416 | (with-ring-and-order ((vars) :polynomials (p q) :value-type :polynomial)
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417 | (,fun-name ring p q) vars)))
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418 |
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419 |
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420 |
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421 | ;;Functions
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422 |
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423 | (defmfun $poly_expand (p vars)
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424 | "This function is equivalent to EXPAND(P) if P parses correctly to a polynomial.
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425 | If the representation is not compatible with a polynomial in variables VARS,
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426 | the result is an error."
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427 | (with-ring-and-order ((vars) :polynomials (p) :value-type :polynomial) p))
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428 |
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429 |
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430 | (defmfun $poly_expt (p n vars)
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431 | (with-ring-and-order ((vars) :polynomials (p) :value-type :polynomial)
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432 | (poly-expt ring-and-order p n)))
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433 |
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434 | (defmfun $poly_content (p vars)
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435 | (with-ring-and-order ((vars) :polynomials (p))
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436 | (poly-content ring p)))
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437 |
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438 | #|
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439 | (defmfun $poly_pseudo_divide (f fl vars)
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440 | (with-ring-and-order ((vars)
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441 | :polynomials (f)
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442 | :poly-lists (fl)
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443 | :value-type :custom)
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444 | (multiple-value-bind (quot rem c division-count)
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445 | (poly-pseudo-divide ring-and-order f fl)
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446 | `((mlist)
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447 | ,(poly->maxima :poly-list quot vars)
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448 | ,(poly->maxima :polynomial rem vars)
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449 | ,c
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450 | ,division-count))))
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451 | |#
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452 |
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453 |
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454 | (defmfun $poly_exact_divide (f g vars)
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455 | (with-ring-and-order ((vars) :polynomials (f g) :value-type :polynomial)
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456 | (poly-exact-divide ring-and-order f g)))
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457 |
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458 | (defmfun $poly_normal_form (f fl vars)
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459 | (with-ring-and-order ((vars) :polynomials (f)
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460 | :poly-lists (fl)
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461 | :value-type :polynomial)
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462 | (normal-form ring-and-order f (remzero fl) nil)))
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463 |
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464 | (defmfun $poly_buchberger_criterion (g vars)
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465 | (with-ring-and-order ((vars) :poly-lists (g) :value-type :logical)
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466 | (buchberger-criterion ring-and-order g)))
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467 |
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468 | (defmfun $poly_buchberger (fl vars)
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469 | (with-ring-and-order ((vars) :poly-lists (fl) :value-type :poly-list)
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470 | (buchberger ring-and-order (remzero fl) 0 nil)))
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471 |
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472 | (defmfun $poly_reduction (plist vars)
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473 | (with-ring-and-order ((vars) :poly-lists (plist)
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474 | :value-type :poly-list)
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475 | (reduction ring-and-order plist)))
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476 |
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477 | (defmfun $poly_minimization (plist vars)
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478 | (with-ring-and-order ((vars) :poly-lists (plist)
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479 | :value-type :poly-list)
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480 | (minimization plist)))
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481 |
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482 | (defmfun $poly_normalize_list (plist vars)
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483 | (with-ring-and-order ((vars) :poly-lists (plist)
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484 | :value-type :poly-list)
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485 | (poly-normalize-list ring plist)))
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486 |
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487 | (defmfun $poly_grobner (f vars)
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488 | (with-ring-and-order ((vars) :poly-lists (f)
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489 | :value-type :poly-list)
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490 | (grobner ring-and-order (remzero f))))
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491 |
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492 | (defmfun $poly_reduced_grobner (f vars)
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493 | (with-ring-and-order ((vars) :poly-lists (f)
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494 | :value-type :poly-list)
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495 | (reduced-grobner ring-and-order (remzero f))))
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496 |
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497 | (defmfun $poly_depends_p (p var mvars
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498 | &aux
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499 | (vars (coerce-maxima-list mvars))
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500 | (pos (position var vars)))
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501 | (with-ring-and-order ((mvars) :polynomials (p) :value-type :custom)
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502 | (if (null pos)
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503 | (merror "~%Variable ~M not in the list of variables ~M." var mvars)
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504 | (poly-depends-p p pos))))
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505 |
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506 | (defmfun $poly_elimination_ideal (flist k vars)
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507 | (with-ring-and-order ((vars) :poly-lists (flist)
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508 | :value-type :poly-list)
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509 | (elimination-ideal ring-and-order flist k nil 0)))
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510 |
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511 | (defmfun $poly_colon_ideal (f g vars)
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512 | (with-ring-and-order ((vars) :poly-lists (f g) :value-type :poly-list)
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513 | (colon-ideal ring-and-order f g nil)))
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514 |
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515 | (defmfun $poly_ideal_intersection (f g vars)
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516 | (with-ring-and-order ((vars) :poly-lists (f g) :value-type :poly-list)
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517 | (ideal-intersection ring-and-order f g nil)))
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518 |
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519 | (defmfun $poly_lcm (f g vars)
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520 | (with-ring-and-order ((vars) :polynomials (f g) :value-type :polynomial)
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521 | (poly-lcm ring-and-order f g)))
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522 |
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523 | (defmfun $poly_gcd (f g vars)
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524 | ($first ($divide (m* f g) ($poly_lcm f g vars))))
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525 |
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526 | (defmfun $poly_grobner_equal (g1 g2 vars)
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527 | (with-ring-and-order ((vars) :poly-lists (g1 g2))
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528 | (grobner-equal ring-and-order g1 g2)))
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529 |
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530 | (defmfun $poly_grobner_subsetp (g1 g2 vars)
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531 | (with-ring-and-order ((vars) :poly-lists (g1 g2))
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532 | (grobner-subsetp ring-and-order g1 g2)))
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533 |
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534 | (defmfun $poly_grobner_member (p g vars)
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535 | (with-ring-and-order ((vars) :polynomials (p) :poly-lists (g))
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536 | (grobner-member ring-and-order p g)))
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537 |
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538 | (defmfun $poly_ideal_saturation1 (f p vars)
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539 | (with-ring-and-order ((vars) :poly-lists (f) :polynomials (p)
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540 | :value-type :poly-list)
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541 | (ideal-saturation-1 ring-and-order f p 0)))
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542 |
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543 | (defmfun $poly_saturation_extension (f plist vars new-vars)
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544 | (with-ring-and-order ((vars new-vars)
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545 | :poly-lists (f plist)
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546 | :value-type :poly-list)
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547 | (saturation-extension ring f plist)))
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548 |
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549 | (defmfun $poly_polysaturation_extension (f plist vars new-vars)
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550 | (with-ring-and-order ((vars new-vars)
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551 | :poly-lists (f plist)
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552 | :value-type :poly-list)
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553 | (polysaturation-extension ring f plist)))
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554 |
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555 | (defmfun $poly_ideal_polysaturation1 (f plist vars)
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556 | (with-ring-and-order ((vars) :poly-lists (f plist)
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557 | :value-type :poly-list)
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558 | (ideal-polysaturation-1 ring-and-order f plist 0 nil)))
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559 |
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560 | (defmfun $poly_ideal_saturation (f g vars)
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561 | (with-ring-and-order ((vars) :poly-lists (f g)
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562 | :value-type :poly-list)
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563 | (ideal-saturation ring-and-order f g 0 nil)))
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564 |
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565 | (defmfun $poly_ideal_polysaturation (f ideal-list vars)
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566 | (with-ring-and-order ((vars) :poly-lists (f)
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567 | :poly-list-lists (ideal-list)
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568 | :value-type :poly-list)
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569 | (ideal-polysaturation ring-and-order f ideal-list 0 nil)))
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570 |
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571 | (defmfun $poly_lt (f vars)
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572 | (with-ring-and-order ((vars) :polynomials (f) :value-type :polynomial)
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573 | (make-poly-from-termlist (list (poly-lt f)))))
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574 |
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575 | (defmfun $poly_lm (f vars)
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576 | (with-ring-and-order ((vars) :polynomials (f) :value-type :polynomial)
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577 | (make-poly-from-termlist (list (make-term (poly-lm f) (funcall (ring-unit ring)))))))
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