#17030: Knot Theory as a part of GSoC 2014.
-------------------------------------+-------------------------------------
Reporter: amitjamadagni | Owner: amitjamadagni
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.4
Component: algebraic | Resolution:
topology | Merged in:
Keywords: | Reviewers: Miguel Marco, Karl-
Authors: Amit Jamadagni, | Dieter Crisman
Miguel Marco | Work issues:
Report Upstream: N/A | Commit:
Branch: | 884d1416e0486c114e16b8606c525b51972c9281
u/mmarco/ticket/17030 | Stopgaps:
Dependencies: |
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Comment (by amitjamadagni):
The problem with the first case is with the orientation of the knot. It
seems the orientation of the knot is coming out as -1 which should be +1
{{{
sage: L = Link([[1, 2, 2, 1]])
sage: L.orientation()
[-1]
}}}
I will try looking into the construction of orientation.
As for the second input, single negative entry does not make sense and I
have added a bit of code (not optimal yet works). Here are the results :
{{{
sage: L = Link([[1, 1, 2, 2]])
sage: L.orientation()
[-1]
sage: L.regions()
[[1], [2, -1]]
}}}
I will try working on the orientation to see where it is going wrong.
--
Ticket URL: <http://trac.sagemath.org/ticket/17030#comment:90>
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