[GAP Forum] groups comparison

Владимир Широкий usopppp at gmail.com
Tue Nov 19 12:56:47 GMT 2013


I'm using cryst and crystcat packages and i want to compare two groups
g:=SpaceGroupIT(3,75);
gGens:=GeneratorsOfGroup(g);
gGens2:=[gGens[2], gGens[3], gGens[4], gGens[5]]
a:=Group(gGens);
b:=Group(gGens2);

I know, that they are the same groups, because gGens[2]*gGens[2]=gGens[1]

how can i check it OR how can i find all relations between generators (in
this case there is another one: gGens[2]^-1*gGens[3]*gGens[2]=gGens[4] )


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