AFAIK, the normalizer of a group is not yet implemented. If you type sage: s6.normalizer? you'll see the synax for that command. My guess is that normalizer_of_group would be an easy function to implement (and I can do that if no one else wants to).
On Wed, Apr 23, 2008 at 4:06 PM, Hy Ginsberg <[EMAIL PROTECTED]> wrote: > > Hi All, > > Perhaps someone can help me figure this out. I am trying to create an > elementary abelian subgroup of a symmetric group and then look at its > normalizer. Here's what doesn't work: > > s6 = SymmetricGroup(6) > > c1 = s6([(1,2)]) > c2 = s6([(3,4)]) > c3 = s6([(5,6)]) > > e8 = s6.subgroup([c1,c2,c3]) > print e8.order() > > n = s6.normalizer(e8) > > It's good through printing the order of "e8". Then the horrible > traceback which > follows. > > Many thanks, > - Hy > > > > > Traceback (most recent call last): > File "<stdin>", line 1, in <module> > File "/home/hy/.sage/sage_notebook/worksheets/admin/13/code/42.py", > line 4, in > <module> > n = s6.normalizer(e8) > File > "/home/hy/sage-2.10-ubuntu32-i686-Linux/local/lib/python2.5/site- > packages/sympy/plotting/", > line 1, in <module> > > File > "/home/hy/sage-2.10-ubuntu32-i686-Linux/local/lib/python2.5/site- > packages/sage/groups/perm_gps/permgroup.py", > line 1253, in normalizer > N = self._gap_().Normalizer(str(g)) > File > "/home/hy/sage-2.10-ubuntu32-i686-Linux/local/lib/python2.5/site- > packages/sage/interfaces/expect.py", > line 954, in __call__ > return self._obj.parent().function_call(self._name, [self._obj] + > list(args)) > File > "/home/hy/sage-2.10-ubuntu32-i686-Linux/local/lib/python2.5/site- > packages/sage/interfaces/expect.py", > line 900, in function_call > args[i] = self.new(args[i]) > File > "/home/hy/sage-2.10-ubuntu32-i686-Linux/local/lib/python2.5/site- > packages/sage/interfaces/expect.py", > line 803, in new > return self(code) > File > "/home/hy/sage-2.10-ubuntu32-i686-Linux/local/lib/python2.5/site- > packages/sage/interfaces/expect.py", > line 738, in __call__ > return cls(self, x) > File > "/home/hy/sage-2.10-ubuntu32-i686-Linux/local/lib/python2.5/site- > packages/sage/interfaces/expect.py", > line 989, in __init__ > raise TypeError, x > TypeError: Gap produced error output > Syntax error: ; expected > $sage20:=Subgroup of SymmetricGroup(6) generated by [(1,2), (3,4), > (5,6)];; > ^ > Variable: 'by' must have a value > > > executing $sage20:=Subgroup of SymmetricGroup(6) generated by > [(1,2), (3,4), > (5,6)];; > > > --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
