sagemath_homfly: Homfly polynomials of knots/links with libhomfly¶

This pip-installable distribution passagemath-homfly provides a Cython interface to the libhomfly library.

What is included¶

sage.libs.homfly

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}

Type¶

standard

Dependencies¶

$(PYTHON)
$(PYTHON_TOOLCHAIN)
cysignals: Interrupt and signal handling for Cython
cython: C-Extensions for Python, an optimizing static compiler
gmp: Library for arbitrary precision arithmetic
libhomfly: Compute the homfly polynomial of knots and links
mpc: Arithmetic of complex numbers with arbitrarily high precision and correct rounding
mpfr: Multiple-precision floating-point computations with correct rounding
pkgconf: An implementation of the pkg-config spec
pkgconfig: Python interface to pkg-config
sage_conf: Configuration module for the Sage library
sage-setup: Build system of the Sage library
sagemath_environment: System and software environment
sagemath_objects: Sage objects, elements, parents, categories, coercion, metaclasses
setuptools: Build system for Python packages

Version Information¶

package-version.txt:

10.6.29

version_requirements.txt:

passagemath-homfly ~= 10.6.29.0

Installation commands¶

PyPI:

$ pip install passagemath-homfly~=10.6.29.0

Sage distribution:

$ sage -i sagemath_homfly

However, these system packages will not be used for building Sage because spkg-configure.m4 has not been written for this package; see upstream Issue #27330 for more information.