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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

We introduce a class of posets, which includes both ribbon posets (skew shapes) and $d$-complete posets, such that their number of linear extensions is given by a determinant of a matrix whose entries are products of hook lengths. We also…

组合数学 · 数学 2020-02-25 Alexander Garver , Stefan Grosser , Jacob P. Matherne , Alejandro H. Morales

Using a modified version of jeu de taquin, Novelli, Pak and Stoyanovskii gave a bijective proof of the hook-length formula for counting standard Young tableaux of fixed shape. In this paper we consider a natural extension of jeu de taquin…

组合数学 · 数学 2014-01-24 Lukas Riegler , Christoph Neumann

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

Although d-complete posets arose along the interface between algebraic combinatorics and Lie theory, they are defined using only requirements on their local structure. These posets are a mutual generalization of rooted trees, shapes, and…

组合数学 · 数学 2018-03-28 Robert A. Proctor , Lindsey M. Scoppetta

Peterson and Proctor obtained a formula which expresses the multivariate generating function for $P$-partitions on a $d$-complete poset $P$ as a product in terms of hooks in $P$. In this paper, we give a skew generalization of…

组合数学 · 数学 2021-02-08 Hiroshi Naruse , Soichi Okada

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

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

In this paper, we present, for any integer d, a description of the set of hooks in a d-symbol. We then introduce generalized hook length functions for a d-symbol, and prove a general result about them, involving the core and quotient of the…

组合数学 · 数学 2013-01-09 Christine Bessenrodt , Jorn B. Olsson , Jean-Baptiste Gramain

Recently, a new weighted generalization of the branching rule for the hook lengths, equivalent to the hook formula, was proved. In this paper, we generalize the complementary branching rule, which can be used to prove Burnside's formula. We…

组合数学 · 数学 2010-06-10 Matjaz Konvalinka

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 introduce the hook length expansion technique and explain how to discover old and new hook length formulas for partitions and plane trees. The new hook length formulas for trees obtained by our method can be proved rather easily, whereas…

组合数学 · 数学 2008-05-19 Guo-Niu Han

We discover another one-parameter generalization of Postnikov's hook length formula for binary trees. The particularity of our formula is that the hook length $h_v$ appears as an exponent. As an application, we derive another simple hook…

组合数学 · 数学 2008-04-29 Guo-Niu Han

The classical 1991 result by Brightwell and Winkler states that the number of linear extensions of a poset is #P-complete. We extend this result to posets with certain restrictions. First, we prove that the number of linear extension for…

组合数学 · 数学 2018-02-20 Samuel Dittmer , Igor Pak

The celebrated hook-length formula gives a product formula for the number of standard Young tableaux of a straight shape. In 2014, Naruse announced a more general formula for the number of standard Young tableaux of skew shapes as a…

组合数学 · 数学 2019-06-26 Alejandro Morales , Igor Pak , Greta Panova

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

The jeu de taquin process produced a standard Young tableau from a skew standard Young tableau by shifting its entries to the northwest. We generalize this process to posets: certain partial numberings of any poset are shifted upward. A…

组合数学 · 数学 2023-08-04 Robert A. Proctor

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

We characterize the class of cycle decompositions that can achieve all Young tableau shapes (except the trivial ones with a single row or a single column) under the Robinson--Schensted--Knuth (RSK) correspondence, a property that we call…

组合数学 · 数学 2023-01-19 Agastya Goel , Simon Rubinstein-Salzedo
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