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相关论文: Hook formulas for skew shapes I. $q$-analogues and…

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The Naruse hook-length formula is a recent general formula for the number of standard Young tableaux of skew shapes, given as a positive sum over excited diagrams of products of hook-lengths. In 2015 we gave two different $q$-analogues of…

组合数学 · 数学 2020-06-03 Alejandro H. Morales , Igor Pak , Greta Panova

Standard tableaux of skew shape are fundamental objects in enumerative and algebraic combinatorics and no product formula for the number is known. In 2014, Naruse gave a formula (NHLF) as a positive sum over excited diagrams of products of…

组合数学 · 数学 2023-11-16 Alejandro H. Morales , Greta Panova , GaYee Park

A few years ago, Naruse presented a beautiful cancellation-free hook-length formula for skew shapes, both straight and shifted. The formula involves a sum over objects called \emph{excited diagrams}, and the term corresponding to each…

组合数学 · 数学 2018-09-10 Matjaz Konvalinka

Recently, Naruse presented a beautiful cancellation-free hook-length formula for skew shapes. The formula involves a sum over objects called excited diagrams, and the term corresponding to each excited diagram has hook lengths in the…

组合数学 · 数学 2018-09-05 Matjaz Konvalinka

We present a new family of hook-length formulas for the number of standard increasing tableaux which arise in the study of factorial Grothendieck polynomials. In the case of straight shapes our formulas generalize the classical hook-length…

组合数学 · 数学 2021-08-31 Alejandro H. Morales , Igor Pak , Greta Panova

The number of standard Young tableaux of a skew shape $\lambda/\mu$ can be computed as a sum over excited diagrams inside $\lambda$. Excited diagrams are in bijection with certain lozenge tilings, with flagged semistandard tableaux and also…

组合数学 · 数学 2024-09-27 Greta Panova , Leonid Petrov

The hook length formula gives a product formula for the number of standard Young tableaux of a partition shape. The number of standard Young tableaux of a skew shape does not always have a product formula. However, for some special skew…

组合数学 · 数学 2018-06-06 Jang Soo Kim , Meesue Yoo

We give new product formulas for the number of standard Young tableaux of certain skew shapes and for the principal evaluation of the certain Schubert polynomials. These are proved by utilizing symmetries for evaluations of factorial Schur…

组合数学 · 数学 2020-06-03 Alejandro H. Morales , Igor Pak , Greta Panova

The classical hook length formula counts the number of standard tableaux of straight shapes. In 1996, Okounkov and Olshanski found a positive formula for the number of standard Young tableaux of a skew shape. We prove various properties of…

组合数学 · 数学 2023-09-19 Alejandro H. Morales , Daniel G. Zhu

We give new bounds and asymptotic estimates on the number of standard Young tableaux of skew shape in a variety of special cases. Our approach is based on Naruse's hook-length formula. We also compare our bounds with the existing bounds on…

组合数学 · 数学 2017-03-16 Alejandro Morales , Igor Pak , Greta Panova

The classical hook length formula of enumerative combinatorics expresses the number of standard Young tableaux of a given partition shape as a single fraction. In recent years, two generalizations of this formula have emerged: one by Pak…

组合数学 · 数学 2023-10-30 Darij Grinberg , Nazar Korniichuk , Kostiantyn Molokanov , Severyn Khomych

We present a conjectual hook formula concerning the number of the standard tableaux on "cylindric" skew diagrams. Our formula can be seen as an extension of Naruse's hook formula for skew diagrams. Moreover, we prove our conjecture in some…

组合数学 · 数学 2021-06-18 Takeshi Suzuki , Yoshitaka Toyosawa

Linear extensions of posets are important objects in enumerative and algebraic combinatorics that are difficult to count in general. Families of posets like Young diagrams of straight shapes and $d$-complete posets have hook-length product…

组合数学 · 数学 2021-05-07 GaYee Park

We construct a hook-content formula and its $q$-analog using excited Young diagrams analogous to Naruse's hook-length formula for skew shapes. Furthermore, we show that our hook-content formula has a simple factorization and give some…

组合数学 · 数学 2019-04-02 Anatol N. Kirillov , Travis Scrimshaw

We bound the number of standard tableaux of skew shapes via thick hook decompositions in the Naruse hook length formula. Combining this with elementary counting arguments in the Murnaghan--Nakayama rule, we establish a uniform bound on…

组合数学 · 数学 2025-08-12 Lucas Teyssier

Recently, Naruse discovered a hook length formula for the number of standard Young tableaux of a skew shape. Morales, Pak and Panova found two $q$-analogs of Naruse's hook length formula over semistandard Young tableaux (SSYTs) and reverse…

组合数学 · 数学 2017-11-08 Byung-Hak Hwang , Jang Soo Kim , Meesue Yoo , Sun-mi Yun

In this paper, we present a direct bijective proof of the hook-length formula for standard immaculate tableaux, which arose in the study of non-commutative symmetric functions. Our proof is along the spirit of Novelli, Pak and…

组合数学 · 数学 2015-03-17 Emma L. L. Gao , Arthur L. B. Yang

By considering the specialisation $s_{\lambda}(1,q,q^2,...,q^{n-1})$ of the Schur function, Stanley was able to describe a formula for the number of semistandard Young tableaux of shape $\lambda$ in terms of two properties of the boxes in…

组合数学 · 数学 2019-08-15 Peter S. Campbell , Anna Stokke

Recently, a simple proof of the hook length formula was given via the branching rule. In this paper, we extend the results to shifted tableaux. We give a bijective proof of the branching rule for the hook lengths for shifted tableaux;…

组合数学 · 数学 2010-06-24 Matjaz Konvalinka

Using equivariant cohomology theory, Naruse obtained a hook length formula for the number of standard Young tableaux of skew shape $\lambda/\mu$. Morales, Pak and Panova found two $q$-analogues of Naruse's formula respectively by counting…

组合数学 · 数学 2017-11-09 Peter L. Guo , C. D. Zhao , Michael X. X. Zhong
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