Changeset 1295 for branches

Timestamp:

2015-06-11T20:44:58-07:00 (9 years ago)

Author:

Marek Rychlik

Message:

* empty log message *

File:

• branches/f4grobner/division.lisp (modified) (1 diff)

branches/f4grobner/division.lisp

@@ -243 +243 @@
   "Divide every polynomial in a list PLIST by its leading coefficient. "
   (mapcar #'(lambda (x) (poly-normalize ring x)) plist))
-
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;;
-;; These are provided mostly for debugging purposes To enable
-;; verification of grobner bases with BUCHBERGER-CRITERION, do
-;; (pushnew :grobner-check *features*) and compile/load this file.
-;; With this feature, the calculations will slow down CONSIDERABLY.
-;;
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-
-(defun grobner-test (ring g f)
-  "Test whether G is a Grobner basis and F is contained in G. Return T
-upon success and NIL otherwise."
-  (debug-cgb "~&GROBNER CHECK: ")
-  (let (($poly_grobner_debug nil)
-        (stat1 (buchberger-criterion ring g))
-        (stat2
-          (every #'poly-zerop
-                 (makelist (normal-form ring (copy-tree (elt f i)) g nil)
-                           (i 0 (1- (length f)))))))
-    (unless stat1 (error "~&Buchberger criterion failed."))
-    (unless stat2
-      (error "~&Original polys not in ideal spanned by Grobner.")))
-  (debug-cgb "~&GROBNER CHECK END")
-  t)
-
-
-