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xTras: A field-theory inspired xAct package for mathematica

Teake Nutma
Organization: Max-Planck-Institut für Gravitationsphysik
Journal / Anthology

Computer Physics Communications
Year: 2014
Volume: 1815
Page range: 1719–1738

We present the tensor computer algebra package xTras, which provides functions and methods frequently needed when doing (classical) field theory. Amongst others, it can compute contractions, make Ansätze, and solve tensorial equations. It is built upon the tensor computer algebra system xAct, a collection of packages for Mathematica.

*Science > Physics

Mathematica, Computer algebra, Tensor calculus, Field theory, Combinatorics, General relativity, Riemann tensor, Young tableaux