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@xAct-contrib Public contributions to the xAct tensor algebra suite

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    17 repositories

    • Spinors

      Public
      Spinor calculus in xAct
      Mathematica
      •4•9•0•0•Updated Jan 6, 2026Jan 6, 2026

    • TexAct

      Public
      Produce TeX versions of expressions derived with xAct
      Mathematica
      •
      GNU General Public License v2.0
      •3•8•0•0•Updated Dec 30, 2025Dec 30, 2025

    • SpinFrames

      Public
      NP and GHP form of spinor equations
      Mathematica
      •
      GNU General Public License v2.0
      •0•0•0•0•Updated Dec 23, 2025Dec 23, 2025

    • SpaceSpinors

      Public
      A package to handle space spinors.
      Mathematica
      •
      GNU General Public License v2.0
      •0•0•0•0•Updated Jun 23, 2025Jun 23, 2025

    • SymSpin

      Public
      A package for manipulation of symmetric spinors.
      Mathematica
      •
      GNU General Public License v2.0
      •0•0•0•0•Updated Jun 23, 2025Jun 23, 2025

    • SymManipulator

      Public
      Symmetrized tensor expressions
      Mathematica
      •
      GNU General Public License v2.0
      •0•0•0•0•Updated May 14, 2025May 14, 2025

    • xTerior

      Public
      Exterior Calculus for xAct
      computer-algebramathematicadifferential-geometry
      computer-algebramathematicadifferential-geometry
      Mathematica
      •7•10•2•2•Updated Aug 9, 2024Aug 9, 2024

    • examples

      Public
      Example xAct notebooks with common usage patterns
      computer-algebramathematica
      computer-algebramathematica
      Mathematica
      •52•105•2•1•Updated Aug 1, 2021Aug 1, 2021

    • xPand

      Public
      Computer algebra for cosmological perturbation theory
      Mathematica
      •8•13•0•0•Updated Mar 28, 2018Mar 28, 2018

    • xAct-contrib.github.io

      Public
      Web site for xAct-contrib community
      CSS
      •0•3•0•0•Updated Jun 3, 2017Jun 3, 2017

    • pncbc-eftofpng

      Public
      Mathematica
      •
      GNU General Public License v3.0
      •10•1•0•0•Updated May 21, 2017May 21, 2017

    • xTras

      Public
      A field theory inspired xAct package for Mathematica
      Mathematica
      •
      GNU General Public License v3.0
      •5•17•0•0•Updated Jul 28, 2016Jul 28, 2016

    • xIST

      Public
      Home of the xIST and COPPER packages
      Mathematica
      •
      GNU General Public License v3.0
      •3•3•0•0•Updated Jul 13, 2016Jul 13, 2016

    • xPrint

      Public
      xPrint for xAct: graphical interface for tensor input and manipulation
      Mathematica
      •
      GNU General Public License v2.0
      •6•6•0•0•Updated Jul 4, 2015Jul 4, 2015

    • TraceFree

      Public
      xAct xTension to define tensors as trace-free
      Objective-C
      •1•4•0•0•Updated Nov 12, 2013Nov 12, 2013

    • DivFree

      Public
      xAct xTension to define tensors as divergence-free
      Objective-C
      •0•4•0•0•Updated Aug 29, 2013Aug 29, 2013

    • HelloWorldxTension

      Public
      Trivial xTension example package
      Objective-C
      •0•3•0•0•Updated Aug 29, 2013Aug 29, 2013
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