This is a lightweight library which defines a few file types which are designed to store polynomials on disk.
The goal of this library is to make it easy for Pure Mathematics researchers to switch data between computer algebra systems. In particular, no effort is made to be efficient or generic.
Pull requests are welcome.
We define two file formats
.d1polys, a list of dense 1-variable polynomials, is a (zero-indexed) csv file where the (i,j)th coordinate in the file is the coefficient ofx^jfor the ith polynomial in the list.d2poly, a single dense 2-variable polynomial, is a (zero-indexed) csv file where the (i,j)th coordinate in the file is the coefficient ofx^i y^j..sMVpoly, a single sparse multi-variable polynomial is a json array of monomialsso that the ith entry of the array indicates the exponent of[{ "coef" : 2, "vars" : [0, 2, 1, 1] }, { "coef" : 1, "vars" : [1, 1, 0, 0] }]x_iin the monomial
Note: if you didn't catch it, the "d" in the file type names stands for dense and s for sparse
The code in this repository provides a variety of write_* and read_* methods
for different computer algebra systems.
We recommend using this code in one of two ways:
- Copy the read/write methods that you need into your own project as necessary
- Include this repository as a git submodule in your project.
Option #1 is quick and dirty, while option #2 is more sustainable (e.g. you can get updates, contribute back any improvements you make) but requires you to be using a git repository.
Enjoy!