42 articles in this issue
Mohammed Albow, Jeffrey Edgington, Mario Lopez, Petr Vojtechovský
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Seyed Amin Seyed Fakhari
Megan Ly
Schur–Weyl duality is a fundamental framework in combinatorial representation theory. It intimately relates the irreducible representations of a group to the irreducible representations of its centralizer algebra. We investigate the analog of Sc... see more
Dániel Gerbner, Abhishek Methuku, Dániel T. Nagy, Balazs Patkos, Máté Vizer
Alexandr Polyanskii
Adam O'Neal, Michael W. Schroeder
Veronika Irvine, Stephen Melczer, Frank Ruskey
Jinko Kanno, Songling Shan
António Girão, Gábor Mészáros, Kamil Popielarz, Richard Snyder
Maria Gillespie, Jake Levinson
Jhon B. Caicedo, Victor H. Moll, José L. Ramírez, Diego Villamizar
Extensions of a set partition obtained by imposing bounds on the size of the parts is examined. Arithmetical and combinatorial properties of these sequences are established.
Dhruv Rohatgi
József Balogh, Mikhail Lavrov, George Shakan, Adam Zsolt Wagner
Nathan Reading
Luc Haller, Miloš Trujic
Tom Bohman, Dhruv Mubayi
Norio Konno, Iwao Sato, Etsuo Segawa
Robert Muth
Super RSK correspondence is a bijective correspondence between superbiwords and pairs of semistandard supertableaux. Such a bijection was given by Bonetti, Senato and Venezia, via an insertion algorithm closely related to Schensted insertion. Notably, the... see more
Thomas Lam
A positroid variety is an intersection of cyclically rotated Grassmannian Schubert varieties. Each graded piece of the homogeneous coordinate ring of a positroid variety is the intersection of cyclically rotated (rectangular) Demazure modules, which... see more
Rhys J. Evans, Sergey Goryainov, Dmitry Panasenko
Jonathan Klawitter, Simone Linz
Toufik Mansour
James D. Currie, Lucas Mol, Narad Rampersad
Viviane Pons
Toshiya Yurikusa
We give a cluster expansion formula for cluster algebras with principal coefficients defined from triangulated surfaces in terms of maximal independent sets of angles. Our formula simplifies the cluster expansion formula given by Musiker, Schiffler and Wi... see more
József Balogh, Shagnik Das, Hong Liu, Maryam Sharifzadeh, Tuan Tran
Peter Vandendriessche
Rachel Kirsch, A. J. Radcliffe
James Oxley, Charles Semple, Geoff Whittle
Matt DeVos, Edita Rollová, Robert Šámal
Maria Axenovich, Anika Kaufmann, Raphael Yuster
Niranjan Balachandran, Rogers Mathew, Tapas Kumar Mishra
Zhi Qiao, Yifan Jing, Jack Koolen
Justin M. Troyka
A split graph is a graph whose vertices can be partitioned into a clique and a stable set. We investigate the combinatorial species of split graphs, providing species-theoretic generalizations of enumerative results due to Bína and Pribil (2015), Cheng, C... see more
Daniela Ferrero, Mary Flagg, H. Tracy Hall, Leslie Hogben, Jephian C.-H. Lin, Seth A. Meyer, Shahla Nasserasr, Bryan Shader
Connections between vital linkages and zero forcing are established. Specifically, the notion of a rigid linkage is introduced as a special kind of unique linkage and it is shown that spanning forcing paths of a zero forcing process form a spanning rigid ... see more
Xueyi Huang, Qiongxiang Huang, Sebastian M. Cioaba
Ville Junnila, Tero Laihonen, Tuomo Lehtilä
Shi-Mei Ma, Jun Ma, Yeong-Nan Yeh
Robert Jajcay, Štefko Miklavic, Primož Šparl, Gorazd Vasiljevic
Mahir Bilen Can, Yonah Cherniavsky, Martin Rubey
Simon R. Blackburn
An inglenook puzzle is a classic shunting (switching) puzzle often found on model railway layouts. A collection of wagons sits in a fan of sidings with a limited length headshunt (lead track). The aim of the puzzle is to rearrange the wagons into a desire... see more
Fei Xue
In this paper we study the lattice point covering property of some regular polygons in dimension 2.