[GAP Forum] Calculation and derivation the small representations of little groups and the corepresentations of magnetic space groups systematically.

[Max Horn]

Dear Hongyi,

there are several GAP packages dealing with crystallographic groups in one way or another. Have you had a look at those? From a quick look:

https://www.gap-system.org/Packages/cryst.html
https://www.gap-system.org/Packages/crystcat.html
https://www.gap-system.org/Packages/aclib.html

Also, be advised that putting copyrighted material such as PDF of books still under copyright protection on GitHub is illegal in most jurisdictions. Please refrain from posting links to such illegal offerings here.


Best regards
Max
-- 
Prof. Dr. Max Horn
TU Kaiserslautern
Fachbereich Mathematik
Tel. (+49) 631 205-2730