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            "Intended Audience :: Science/Research",
            "License :: OSI Approved :: ISC License (ISCL)",
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            "Topic :: Scientific/Engineering :: Physics"
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        "description": "*Fuchsia* reduces differential equations for Feynman master integrals to canonical form.\n\nIn concrete terms, let us say we have a system of differential equations of this form:\n\n    \u2202f(x,\u03f5)/\u2202x = \ud835\udd44(x,\u03f5) f(x,\u03f5)\n\nwhere `\ud835\udd44(x,\u03f5)` is a given matrix of rational functions in `x` and `\u03f5`, i.e, a free variable and an infinitesimal parameter.\nOur ultimately goal is to find a column vector of unknown functions `f(x,\u03f5)` as a Laurent series in `\u03f5`, which satisfies our equations.\n\nWith the help of *Fuchsia* we can find a transformation matrix `\ud835\udd4b(x,\u03f5)` which turns our system to the equivalent Fuchsian system of this form:\n\n    \u2202g(x,\u03f5)/\u2202x = \u03f5 \ud835\udd4a(x) g(x,\u03f5)\n\nwhere `\ud835\udd4a(x) = \u2211\u1d62 \ud835\udd4a\u1d62/(x-x\u1d62)` and `f(x,\u03f5) = \ud835\udd4b(x,\u03f5) g(x,\u03f5)`.\n\nSuch a transformation is useful, because we can easily solve the equivalent system for `g(x,\u03f5)` (see [1]) and then, multiplying it by `\ud835\udd4b(x,\u03f5)`, find `f(x,\u03f5)`.\n\nYou can learn about the algorithm used in *Fuchsia* to find such transformations from Roman Lee's paper [2].\n\n*Fuchsia* is available both as a command line utility and as a (Python) library for SageMath [3].\nIt will run on most Unix-like operating systems.\n\nDocumentation with more information, installation and usage details is here [4].\n\n  * [1] https://arxiv.org/abs/1304.1806\n  * [2] https://arxiv.org/abs/1411.0911\n  * [3] http://www.sagemath.org/\n  * [4] http://www.gituliar.net/fuchsia/fuchsia.pdf",
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