xTras: A field-theory inspired xAct package for mathematica
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资源简介：
This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)
Abstract
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.
Title of program: xTras
Catalogue Id: AESH_v1_0
Nature of problem
Common problems in classical field theory: making Ansätze, computing contractions, solving tensorial equations, etc.
Versions of this program held in the CPC repository in Mendeley Data
AESH_v1_0; xTras; 10.1016/j.cpc.2014.02.006
创建时间：
2018-12-07
