25.64 PRump

PRump( G, p )

PRump returns the p-rump of an ag group G for a prime p.

The p-rump of a group G is the normal closure under G of the subgroup generated by the commutators and p.th powers of the generators of G.

    gap> PRump( s4, 2 );
    Subgroup( s4, [ b, c, d ] )
    gap> PRump( s4, 3 );
    s4 

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