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SpinFrames: NP and GHP form of spinor equations

Authors: Thomas Bäckdahl and Steffen Aksteiner © 2015-2021 under GPL.


SpinFrames is a package for Newman-Penrose (NP) and Geroch-Held-Penrose (GHP) expansions of covariant spinorial differential equations in dimension 4 of Lorentzian signature.

See SpinFrames.History

Download and installation

Current version: 0.5.3 (as of 4 September 2021). It is recommended to download the main xAct bundle, but you can also download the different files separately:

See the file Installation notes.