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Actions of the symmetric group generated by comparable sets of integers and Smith invariants.

Azenhas, Olga ; Mamede, Ricardo

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Keys and alternating sign matrices.

Aval, Jean-Christophe

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Number of “udu”s of a Dyck path and ad-nilpotent ideals of parabolic subalgebras of sl ℓ+1(C).

Righi, Céline

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Excedance numbers for permutations in complex reflection groups.

Mansour, Toufik ; Sun, Yidong

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Counting multiderangements by excedances.

Chow, Chak-On

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Kostka-Foulkes polynomials for symmetrizable Kac-Moody algebras.

Viswanath, Sankaran

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Operads and algebraic combinatorics of trees.

Chapoton, Frédéric

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Solution to a combinatorial puzzle arising from Mayer's theory of cluster integrals.

Bernardi, Olivier

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On evaluations of infinite double sums and Tornheim's double series.

Kuba, Markus

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Gröbner basis techniques in algebraic combinatorics.

Hibi, Takayuki

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Duality of antidiagonals and pipe dreams.

Jia, Ning ; Miller, Ezra

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Decreases and descents in words.

Foata, Dominique ; Han, Guo-Niu

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The Electronic Library of Mathematics