Dear all, To get a crystallographic group from the databases in Cryst and CrystCat we have two commands available:
S := SpaceGroupIT(dim, nr) and S := SpaceGroupBBNWZ(dim, nr). In both cases, what we get is a matrix group in GL(dim+1, Q). How can I find out the basis that is used for this representation? Is that given by InternalBasis(S) which should be the same as TranslationBasis(S)? I have read the documentation of both packages but find it still impossible to answer this fundamental question. So any help from someone more knowledgeable will be greatly appreciated. Best, Moritz _______________________________________________ Forum mailing list Forum@mail.gap-system.org http://mail.gap-system.org/mailman/listinfo/forum
