This mail is just to confirm the bug Bill Thurston reported in a mail last
|gap> F := FreeGroup(["a","b"]);; a := F.1;; b := F.2;; |gap> G := F/[ a^3*b^3*a^3*b^-1*a^-1*b^-1*a^-1*b^-1, a*b^4*a^4*b^4*a*b*a*b ];; |gap> GQuotients(G, AlternatingGroup(5)); |Lists Assignment: <list> must be a mutable list at |list[i] := - list[i]; |RelatorRepresentatives( grels ) called from
This error will be fixed in the next release, it is a nuisance, but cannot
cause wrong results, if you need a temporary workaround now (or want to be
bored with the details of this bug), please let me know.