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> ^ Subject:

I don't have GAP, and I'm wondering whether to get it. I'm new to the

forum, so you've heard this one before, be nice.

Does GAP do calculations with group rings?

I'm interested in the

group ring Z[\pi] where Z is the integers and \pi is the group on

four generators, a,b,c,d with one relation

a b 1/a 1/b c d 1/c 1/d.

This is the fundamental group of the double torus. It is an

ugly group, because it contains words of arbitrarily long length that

can not be reduced.

That's my question. If GAP can work with such a thing, I'll get GAP.

Thanks,

Evelyn Hart

hart@math.hope.edu

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