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Subgroup Lattices and Symmetric Functions, Paperback / softback Book

Subgroup Lattices and Symmetric Functions Paperback / softback

Part of the Memoirs of the American Mathematical Society series

Paperback / softback

Description

This work presents foundational research on two approaches to studying subgroup lattices of finite abelian $p$-groups.

The first approach is linear algebraic in nature and generalizes Knuth's study of subspace lattices.

This approach yields a combinatorial interpretation of the Betti polynomials of these Cohen-Macaulay posets.

The second approach, which employs Hall-Littlewood symmetric functions, exploits properties of Kostka polynomials to obtain enumerative results such as rank-unimodality.

Butler completes Lascoux and Schutzenberger's proof that Kostka polynomials are nonnegative, then discusses their monotonicity result and a conjecture on Macdonald's two-variable Kostka functions.

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