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passagemath: Homfly polynomials of knots/links with libhomfly
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for general installation instructions.
About this pip-installable distribution
This pip-installable distribution passagemath-homfly
provides a Cython interface
to the libhomfly <https://github.com/miguelmarco/libhomfly>
_ library.
What is included
sage.libs.homfly <https://github.com/passagemath/passagemath/blob/main/src/sage/libs/homfly.pyx>
_
Examples
::
$ pipx run --pip-args="--prefer-binary" --spec "passagemath-homfly[test]" ipython
In [1]: from sage.libs.homfly import homfly_polynomial_dict
In [2]: trefoil = '1 6 0 1 1 -1 2 1 0 -1 1 1 2 -1 0 1 1 1 2 1'
In [3]: homfly_polynomial_dict(trefoil)
Out[3]: {(-4, 0): -1, (-2, 0): -2, (-2, 2): 1}