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Showing 1 to 1 of 1 for “"characteristic subgroups"”.
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Rational Schur Rings over Abelian Groups
… equivalently, with sublattices of the lattice of subgroups of Z_n. This idea is easily extended to show that for any finite group G, sublattices of the lattice of characteristic subgroups of G give rise to rational S-rings over G in a natural way. Our main result is that any finite group may be …