#10206: Various issues in find_hamiltonian
----------------------------+-----------------------------------------------
Reporter: jdemeyer | Owner: jason, ncohen, rlm
Type: defect | Status: new
Priority: major | Milestone: sage-4.6.1
Component: graph theory | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Description changed by mvngu:
Old description:
> 1.
> {{{
> sage: from sage.graphs.generic_graph_pyx import find_hamiltonian as fh
> sage: G = graphs.CompleteGraph(1); fh(G)
> Traceback (most recent call last):
> ...
> ValueError: empty range for randrange() (0,0, 0)
> }}}
>
> 2.
> {{{
> sage: from sage.graphs.generic_graph_pyx import find_hamiltonian as fh
> sage: G = graphs.CompleteGraph(2); fh(G)
> [ Sage just hangs... ]
> }}}
>
> 3. Why is there a {{{G.hamiltonian_cycle()}}} member function but not
> {{{G.hamiltonian_path()}}}?
New description:
1.
{{{
sage: from sage.graphs.generic_graph_pyx import find_hamiltonian as fh
sage: G = graphs.CompleteGraph(1); fh(G)
Traceback (most recent call last):
...
ValueError: empty range for randrange() (0,0, 0)
}}}
2.
{{{
sage: from sage.graphs.generic_graph_pyx import find_hamiltonian as fh
sage: G = graphs.CompleteGraph(2); fh(G)
[ Sage just hangs... ]
}}}
3. Why is there a {{{G.hamiltonian_cycle()}}} member function but not
{{{G.hamiltonian_path()}}}?
See #10205 for some ideas on fixes.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10206#comment:4>
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