#20719: HOMFLY polynomial of links.
-------------------------------------+-------------------------------------
Reporter: mmarco | Owner:
Type: enhancement | Status: needs_info
Priority: major | Milestone: sage-7.3
Component: algebraic | Resolution:
topology | Merged in:
Keywords: days74 | Reviewers: Travis Scrimshaw
Authors: Miguel Marco | Work issues:
Report Upstream: N/A | Commit:
Branch: | 6c452659bd47d880eb2e0fff90940e4ca28c42a5
u/tscrim/homfly_polynomial-20719 | Stopgaps:
Dependencies: #18057, #18047 |
-------------------------------------+-------------------------------------
Comment (by mmarco):
The problem is that there are many equivalent definitions of the homfly
polynomial. All of them are related by a change of variables.
The homfly program, which we adapted to libhomfly, uses the one where the
variables are called `L` and `M`. There are at least other two definitions
that use the variables `\alpha` and `z` and `x`, `y` and `z` respectively.
In particular, the first two variables are related by multiplying the
variables by `I`, as you said.
It is true that we should clarify which are the coordinates we take.
--
Ticket URL: <http://trac.sagemath.org/ticket/20719#comment:8>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at https://groups.google.com/group/sage-trac.
For more options, visit https://groups.google.com/d/optout.
