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Changeset 1300


Ignore:
Timestamp:
2015-06-11T20:51:29-07:00 (10 years ago)
Author:
Marek Rychlik
Message:

* empty log message *

File:
1 edited

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  • branches/f4grobner/ngrobner.lisp

    r1201 r1300  
    6262;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
    6363;;
    64 ;; These are provided mostly for debugging purposes To enable
    65 ;; verification of grobner bases with BUCHBERGER-CRITERION, do
    66 ;; (pushnew :grobner-check *features*) and compile/load this file.
    67 ;; With this feature, the calculations will slow down CONSIDERABLY.
    68 ;;
    69 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
    70 
    71 (defun grobner-test (ring g f)
    72   "Test whether G is a Grobner basis and F is contained in G. Return T
    73 upon success and NIL otherwise."
    74   (debug-cgb "~&GROBNER CHECK: ")
    75   (let (($poly_grobner_debug nil)
    76         (stat1 (buchberger-criterion ring g))
    77         (stat2
    78           (every #'poly-zerop
    79                  (makelist (normal-form ring (copy-tree (elt f i)) g nil)
    80                            (i 0 (1- (length f)))))))
    81     (unless stat1 (error "~&Buchberger criterion failed."))
    82     (unless stat2
    83       (error "~&Original polys not in ideal spanned by Grobner.")))
    84   (debug-cgb "~&GROBNER CHECK END")
    85   t)
    86 
    87 
    88 
    89 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
    90 ;;
    9164;; Conversion from internal to infix form
    9265;;
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