#7340: cayley_table has a syntax error
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Reporter: jason | Owner: joyner
Type: defect | Status: new
Priority: major | Milestone: sage-4.2.1
Component: group_theory | Keywords:
Work_issues: | Author:
Reviewer: | Merged:
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Changes (by rbeezer):
* owner: tbd => joyner
* component: algebra => group_theory
Comment:
Looking at the code, its not obvious to me just where this output is
coming from. Maybe from GAP?
{{{SymmetricGroup(5).cayley_table()}}} completes properly.
{{{CyclicPermutationGroup(200).cayley_table()}}} completes (after a wait).
{{{CyclicPermutationGroup(720).cayley_table()}}} ran for a while without
an error before I killed it.
So I don't think the bug is simply a question of the size of the group.
Normal behavior creates a "Multivariate Polynomial Ring" with as many
variables as the order of the group. Would a more brute-force approach
(form all {{{n^2}}} products and locate results in the list of elements)
be a more general and less error-prone approach?
Rob
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7340#comment:1>
Sage <http://www.sagemath.org>
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