Changeset 5644:6b03fe2cf6a5

Timestamp:

08/12/07 12:50:17 (6 years ago)

Author:

William Stein <wstein@…>

Branch:

default

Children:

5651:6bf4526572b2, 5753:e207e63d5ceb

Message:

Add some warnings about cube group solve being broken for now.

File:

• sage/groups/perm_gps/cubegroup.py (modified) (3 diffs)

sage/groups/perm_gps/cubegroup.py

@@ -805 +805 @@
 
     def legal(self,state,mode="quiet"):
-        """
+        r"""
         Returns 1 (true) if the dictionary \code{state} (in the same format as
         returned by the faces method) represents a legal position (or state) of
@@ -858 +858 @@
             
     def solve(self,state):
-        """
+        r"""
         Solves the cube in the \code{state}, given as a dictionary as
         in \code{legal}.  This uses GAP's \code{EpimorphismFromFreeGroup}
         and \code{PreImagesRepresentative}.
+
+        WARNING: This is currently evidently broken. 
         
         EXAMPLES:
             sage: rubik = CubeGroup()
             sage: R_state = rubik.faces("R")
-            sage: rubik.solve(R_state)  ## time-consuming
+            sage.: rubik.solve(R_state)  # currently broken (long time)
             'R'
 
@@ -888 +890 @@
         words = [b,d,f,l,r,u]
         sol = leg[1].word_problem(words, False)[0]
-        #print sol
         sol1 = sol.replace("x1","B")
         sol2 = sol1.replace("x2","D")