> < ^ From:

> < ^ Subject:

I do not have an answer to Dave Donaghy's question:

> I know this isn't really a GAP question, but does anyone out there know

> if there's a package available that will calculate the invariants of

> the action of a (small) finite group on a purely transcendental field

> extension over some (arbitrary but infinite) base field? The action can be

> given explicitly as the action on the transcendental generators, but ISN'T

> a permutation action. (Even though the group is often the symmetric group.)

but the recommendation to contact Larry Grove (Tucson)

(grove@math.arizona.edu) who has used GAP and Maple in the

investigation of invariants during a visit to Aachen and might have

some advice.

Since this is an area that we have been asked about more often, I

would welcome further comments in the GAP-forum, if somebody has some

hints.

Joachim Neubueser

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