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We present a different way to obtain generators of metric spaces having the property that the ``position'' of every element of the space is uniquely determined by the distances from the elements of the generators. Specifically we introduce…

Combinatorics · Mathematics 2013-12-09 Ismael Gonzalez Yero

A well-studied statistic of an integer partition is the size of its Durfee square. In particular, the number $D_k (n)$ of partitions of $n$ with Durfee square of fixed size $k$ has a well-known simple rational generating function. We study…

Combinatorics · Mathematics 2025-07-28 N. Guru Sharan , Armin Straub

For stacked simplicial complexes, (special subclasses of such are: trees, triangulations of polygons, stacked polytopes), we give an explicit bijection between partitions of facets (for trees: edges), and partitions of vertices into…

Combinatorics · Mathematics 2024-01-17 Gunnar Fløystad

Unrefinable partitions are a subset of partitions into distinct parts which satisfy an additional unrefinability property. More precisely, being an unrefinable partition means that none of the parts can be written as the sum of smaller…

Combinatorics · Mathematics 2023-01-11 Riccardo Aragona , Lorenzo Campioni , Roberto Civino , Massimo Lauria

We denote the number of partitions of $n$ wherein the even parts are distinct (and the odd parts are unrestricted) by $ped(n)$. In this paper, we will use generating function manipulations to obtain new congruences for $ped(n)$ modulo $24$.

Number Theory · Mathematics 2024-10-08 Hemjyoti Nath

Generating functions for plane overpartitions are obtained using various methods such as nonintersecting paths, RSK type algorithms and symmetric functions. We extend some of the generating functions to cylindric partitions. Also, we show…

Combinatorics · Mathematics 2010-09-17 Sylvie Corteel , Cyrille Savelief , Mirjana Vuletić

In 2015, Bringmann, Lovejoy and Mahlburg considered certain kinds overpartitions, which can been seen as the overpartition analogue of Schur's partition. The motivation of their work is that the difference between the generating function of…

Combinatorics · Mathematics 2018-01-09 Doris D. M. Sang , Diane Y. H. Shi

In this paper we present a new class of integer partition identities. The number of partitions with d-distant parts can be represented as a sum of the number of partitions with 1-distant parts whose even parts are greater than twice the…

Combinatorics · Mathematics 2013-10-29 Ivica Martinjak , Dragutin Svrtan

We describe a generating tree approach to the enumeration and exhaustive generation of k-nonnesting set partitions and permutations. Unlike previous work in the literature using the connections of these objects to Young tableaux and…

Combinatorics · Mathematics 2014-02-11 Sophie Burrill , Sergi Elizalde , Marni Mishna , Lily Yen

For each nonempty integer partition $\pi$, we define the maximal excludant of $\pi$ to be the largest nonnegative integer smaller than the largest part of $\pi$ that is not a part of $\pi$. Let $\sigma\!\operatorname{maex}(n)$ be the sum of…

Combinatorics · Mathematics 2019-05-16 Shane Chern

We provide, under minimal continuity assumptions, a description of \textsl{additive partition entropies}. They are real functions $I$ on the set of finite partitions that are additive on stochastically independent partitions in a given…

Information Theory · Computer Science 2015-03-20 Adam Paszkiewicz , Tomasz Sobieszek

Extensions of a set partition obtained by imposing bounds on the size of the parts and the coloring of some of the elements are examined. Combinatorial properties and the generating functions of some counting sequences associated with these…

Combinatorics · Mathematics 2021-03-09 István Mezo , Victor H. Moll , José L. Ramírez , Diego Villamizar

The number of partitions of $n$ wherein odd parts are distinct and even parts are unrestricted, often denoted by $pod(n)$. In this paper, we provide linear recurrence relations for $pod(n)$, and the connections of $pod(n)$ with other…

Combinatorics · Mathematics 2024-01-30 Hemjyoti Nath

In this paper we present a generating function approach to two counting problems in elementary quantum mechanics. The first is to find the total ways of distributing identical particles among different states. The second is to find the…

General Physics · Physics 2007-11-20 Li Han

We introduce a new type of partitions that consists of partitions whose different parts alternate in parity (e.g., $3+2+2+1+1$). Various properties of this partition function are studied. In particular, we obtain its asymptotic behavior by…

Combinatorics · Mathematics 2018-03-06 Shane Chern

The paper contains an exposition of part of topology using partitions of unity. The main idea is to create variants of the Tietze Extension Theorem and use them to derive classical theorems. This idea leads to a new result generalizing…

General Topology · Mathematics 2008-02-28 Jerzy Dydak

We provide a new framework for generating multiple good quality partitions (clusterings) of a single data set. Our approach decomposes this problem into two components, generating many high-quality partitions, and then grouping these…

Machine Learning · Computer Science 2011-08-02 Jeff M. Phillips , Parasaran Raman , Suresh Venkatasubramanian

In this article we study the "norm" of an integer partition, which we define to be the product of the parts. This partition-theoretic statistic has appeared here and there in the literature of the last century or so, and is at the heart of…

Number Theory · Mathematics 2021-02-16 Andrew V. Sills , Robert Schneider

This work is devoted to the analysis of a Gibbs partition model, also known as a composition scheme. We consider a natural new condition on the component weights. It leads to a new behavior for the total number of components. We discover a…

Combinatorics · Mathematics 2025-09-29 Niccolò Bosio , Markus Kuba , Benedikt Stufler

An overpartition is a partition such that the first occurrence (equivalently, the last occurrence) of a number may be overlined. In this article, we investigate three contents of overpartitions. We first consider the $r$-chain minimal and…

Combinatorics · Mathematics 2026-01-29 Y. H. Chen , Y. Q. Chen , Thomas Y. He , H. X. Huang , X. Zhang
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