Dear GAP Forum,

I was trying to execute example from the Reference Manual to GAP 4.2
concerning group rings on page 567. For the field GF(3) all is OK, but
when I changed to GF(2) an error occured:

gap> d8:=DihedralGroup(8);
<pc group of size 8 with 3 generators>
gap> rm:=FreeMagmaRing(GF(2),d8);
<algebra-with-one over GF(2), with 3 generators>
gap> emb:=Embedding(d8,rm);
<mapping: Group( [ f1, f2, f3 ] ) -> AlgebraWithOne( GF(2), ... ) >
gap> gens:=List(GeneratorsOfGroup(d8),x->x^emb);
[ (Z(2)^0)*f1, (Z(2)^0)*f2, (Z(2)^0)*f3 ]
gap> x1:=gens[1]+gens[2];;
gap> x2:=(gens[1]-gens[2])*gens[3];;
gap> x3:=gens[1]*gens[2]*(One(rm)-gens[3]);;
gap> g1:=x1-x2+x3;;
gap> g2:=x1+x2;;
gap> q8:=Group(g1,g2);;
Error usage: Group(<gen>,...), Group(<gens>), Group(<gens>,<id>) at
Error( "usage: Group(<gen>,...), Group(<gens>), Group(<gens>,<id>)" );
<function>( <arguments> ) called from read-eval-loop
Entering break read-eval-print loop, you can 'quit;' to quit to outer loop,
or you can return to continue
brk>

The platform I'm working at is Windows 95, 98 (tested on both).
What can be done to remedy the situation?

Sincerely yours,

Ignat Soroko
e-mail: soroko@fpm.bsu.unibel.by

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