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Tiered trees were introduced as a combinatorial object for counting absolutely indecomposable representation of certain quivers and torus orbit of certain homogeneous variety. In this paper, we define a bijection between the set of…

Combinatorics · Mathematics 2024-08-07 Biswadeep Bagchi , Srinibas Swain

We introduce a generalization of parking functions called $t$-metered $(m,n)$-parking functions, in which one of $m$ cars parks among $n$ spots per hour then leaves after $t$ hours. We characterize and enumerate these sequences for $t=1$,…

Combinatorics · Mathematics 2024-06-21 Spencer Daugherty , Pamela E. Harris , Ian Klein , Matt McClinton

We present exponential generating function analogues to two classical identities involving the ordinary generating function of the complete homogeneous symmetric functions. After a suitable specialization the new identities reduce to…

Combinatorics · Mathematics 2017-12-01 Rafael S. González D'León

Fully inhomogeneous spin Hall-Littlewood symmetric rational functions $F_\lambda$ are multiparameter deformations of the classical Hall-Littlewood symmetric polynomials and can be viewed as partition functions in $\mathfrak{sl}(2)$ higher…

Combinatorics · Mathematics 2021-10-05 Svetlana Gavrilova

We give another proof for the (-1)-enumeration of self-complementary plane partitions with at least one odd side-length by specializing a certain Schur function identity. The proof is analogous to Stanley's proof for the ordinary…

Combinatorics · Mathematics 2007-05-23 Theresia Eisenkölbl

Let $W$ be a Weyl group with root lattice $Q$ and Coxeter number $h$. The elements of the finite torus $Q/(h+1)Q$ are called the $W$-{\sf parking functions}, and we call the permutation representation of $W$ on the set of $W$-parking…

Combinatorics · Mathematics 2014-11-26 Drew Armstrong , Victor Reiner , Brendon Rhoades

Classical parking functions are a generalization of permutations that appear in many combinatorial structures. Prime parking functions are indecomposable components such that any classical parking function can be uniquely described as a…

For a connected graph $G$ with sink vertex $q$, a $G$-parking function is a vector of nonnegative integers whose entries are determined by cut-sets in $G$. Such objects also arise as the superstable configurations in the context of…

Combinatorics · Mathematics 2025-08-14 Timothy Blanton , Anton Dochtermann , Isabelle Hong , SuHo Oh , Zhan Zhan

We consider three-dimensional ${\mathcal N}=2$ supersymmetric field theories defined on general complex-valued backgrounds of Euclidean new minimal supergravity admitting two Killing spinors of opposite $R$-charges. We compute partition…

High Energy Physics - Theory · Physics 2024-04-17 Matteo Inglese , Dario Martelli , Antonio Pittelli

We explore the link between combinatorics and probability generated by the question "What does a random parking function look like?" This gives rise to novel probabilistic interpretations of some elegant, known generating functions. It…

Probability · Mathematics 2016-11-30 Persi Diaconis , Angela Hicks

We introduce a ring of noncommutative shifted symmetric functions based on an integer-indexed sequence of shift parameters. Using generating series and quasideterminants, this multiparameter approach produces deformations of the ring of…

Rings and Algebras · Mathematics 2023-05-04 Robert Laugwitz , Vladimir Retakh

We give a recursive definition of generalized parking function that allows us to view them as a species. From there we compute a non-commutative characteristic of the generalized parking function module, and deduce some enumeration formulas…

Combinatorics · Mathematics 2015-05-07 Jean-Baptiste Priez , Aladin Virmaux

We introduce several associative algebras and series of vector spaces associated to these algebras. Using lattice vertex operators, we obtain dimension and character formulae for these spaces. In particular, we a series of representations…

Representation Theory · Mathematics 2009-03-10 Vladimir Dotsenko

We introduce a generalization of parking functions in which cars are limited in their movement backwards and forwards by two nonnegative integer parameters $k$ and $\ell$, respectively. In this setting, there are $n$ spots on a one-way…

Combinatorics · Mathematics 2025-03-24 Jennifer Elder , Pamela E. Harris , Lybitina Koene , Ilana Lavene , Lucy Martinez , Molly Oldham

For any integers $1\leq k\leq n$, we introduce a new family of parking functions called $k$-vacillating parking functions of length $n$. The parking rule for $k$-vacillating parking functions allows a car with preference $p$ to park in the…

Combinatorics · Mathematics 2024-08-27 Bruce Fang , Pamela E. Harris , Brian M. Kamau , David Wang

The notion of spherically symmetric superfunctions as functions invariant under the orthosymplectic group is introduced. This leads to dimensional reduction theorems for differentiation and integration in superspace. These spherically…

Mathematical Physics · Physics 2015-05-19 Kevin Coulembier , Hendrik De Bie , Frank Sommen

We establish an isomorphism between the center of the Heisenberg category defined by Khovanov and the algebra $\Lambda^*$ of shifted symmetric functions defined by Okounkov-Olshanski. We give a graphical description of the shifted power and…

Representation Theory · Mathematics 2016-10-17 Henry Kvinge , Anthony M. Licata , Stuart Mitchell

Patrias and Pylyavskyy introduced shifted Hecke insertion as an application of their theory of dual filtered graphs. We use shifted Hecke insertion to construct symmetric function representatives for the K-theory of the orthogonal…

Combinatorics · Mathematics 2015-11-02 Zachary Hamaker , Adam Keilthy , Rebecca Patrias , Lillian Webster , Yinuo Zhang , Shuqi Zhou

We introduce parity-odd spin-1 harmonic functions in AdS$_3$ and study their properties. We demonstrate that such parity-odd harmonics are related to their parity-even counterparts through the action of a `Chern-Simons operator', which we…

High Energy Physics - Theory · Physics 2025-12-09 Jyotirmoy Bhattacharya , Anurag Guria , Shiroman Prakash , Aditya Sharma , Tarun Sharma

In this paper we study a new family of sinc--like functions, defined on an interval of finite width. These functions, which we call ``little sinc'', are orthogonal and share many of the properties of the sinc functions. We show that the…

Quantum Physics · Physics 2009-11-13 Paolo Amore , Mayra Cervantes , Francisco M. Fernández