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The Electronic Journal of Combinatorics, Volume 25
Volume 25, Number 1, 2018
- Amy Grady, Svetlana Poznanovic:

Graphical Mahonian Statistics on Words. 1 - Evan Chen

:
Linear Polychromatic Colorings of Hypercube Faces. 1 - Johannes Hofscheier, Benjamin Nill, Dennis Öberg:

On Ehrhart Polynomials of Lattice Triangles. 1 - Imre Leader, Ta Sheng Tan

:
Improved Bounds for the Graham-Pollak Problem for Hypergraphs. 1 - P. A. CrowdMath:

Bounds on Parameters of Minimally Nonlinear Patterns. 1 - Adam Mammoliti:

The r-Matching Sequencibility of Complete Graphs. 1 - Nima Amini:

Equidistributions of Mahonian Statistics over Pattern Avoiding Permutations. 1 - Robin Sulzgruber, Marko Thiel:

On Parking Functions and the Zeta Map in Types B, C and D. 1 - Carolyn Chun

, Rhiannon Hall, Criel Merino
, Iain Moffatt
, Steven D. Noble
:
The Structure of Delta-Matroids with Width One Twists. 1 - Bolor Turmunkh:

(q, t)-Characters of Kirillov-Reshetikhin Modules of Type Ar as Quantum Cluster Variables. 1 - Michael Dougherty

, Jon McCammond:
Undesired Parking Spaces and Contractible Pieces of the Noncrossing Partition Link. 1 - Ted Dobson:

Some New Groups which are not CI-groups with Respect to Graphs. 1 - Stefka Bouyuklieva, Masaaki Harada, Akihiro Munemasa:

Nonexistence of Certain Singly Even Self-Dual Codes with Minimal Shadow. 1 - Peter J. Cameron, Jason Semeraro

:
The Cycle Polynomial of a Permutation Group. 1 - David Brandfonbrener, Pat Devlin, Netanel Friedenberg, Yuxuan Ke, Steffen Marcus, Henry Reichard, Ethan Sciamma:

Two-Vertex Generators of Jacobians of Graphs. 1 - Wendy J. Myrvold

, Jennifer Woodcock:
A Large Set of Torus Obstructions and How They Were Discovered. 1 - Herman Z. Q. Chen, Arthur L. B. Yang, Philip B. Zhang:

Kirillov's Unimodality Conjecture for the Rectangular Narayana Polynomials. 1 - Michael Joseph, Tom Roby:

Toggling Independent Sets of a Path Graph. 1 - Sameer Kailasa, Vivian Kuperberg, Nicholas Wawrykow:

Chip-Firing on Trees of Loops. 1 - Sylwia Cichacz

:
Zero Sum Partition of Abelian Groups into Sets of the Same Order and its Applications. 1 - Ryan Kaliszewski, Debdut Karmakar:

A Rational Catalan Formula for (m, 3)-Hikita Polynomials. 1 - Max Wakefield:

A Flag Whitney Number Formula for Matroid Kazhdan-Lusztig Polynomials. 1 - Sara C. Billey, Matjaz Konvalinka

, T. Kyle Petersen
, William Slofstra, Bridget Eileen Tenner:
Parabolic Double Cosets in Coxeter Groups. 1 - Julia Heller, Petra Schwer:

Generalized Non-Crossing Partitions and Buildings. 1 - Megan Bernstein:

Likelihood Orders for the p-Cycle Walks on the Symmetric Group. 1 - Nicholas Proudfoot, Yuan Xu, Benjamin Young:

The Z-Polynomial of a Matroid. 1 - Florian Aigner:

Fully Packed Loop Configurations: Polynomiality and Nested Arches. 1 - Elise delMas, Thomas Hameister, Victor Reiner

:
A Refined Count of Coxeter Element Reflection Factorizations. 1 - Amol Aggarwal:

An Arithmetic Property of Moments of the β-Hermite Ensemble and Certain Map Enumerators. 1 - Wenjie Fang, Mihyun Kang, Michael Moßhammer, Philipp Sprüssel:

Cubic Graphs and Related Triangulations on Orientable Surfaces. 1 - Shi-Mei Ma, Jun Ma, Yeong-Nan Yeh, Bao-Xuan Zhu

:
Context-Free Grammars for Several Polynomials Associated with Eulerian Polynomials. 1 - Christopher R. H. Hanusa

, Carla D. Savage:
Lecture Hall Partitions and the Affine Hyperoctahedral Group. 1 - Sen-Peng Eu

, Tung-Shan Fu, Hsiang-Chun Hsu, Yu-Pei Huang:
Fixed Points of the Evacuation of Maximal Chains on Fuss Shapes. 1 - Mihyun Kang, Philipp Sprüssel:

Symmetries of Unlabelled Planar Triangulations. 1 - Stefan Felsner, Gwenaël Joret, Piotr Micek, William T. Trotter, Veit Wiechert:

Burling Graphs, Chromatic Number, and Orthogonal Tree-Decompositions. 1 - Panupong Vichitkunakorn

:
Conserved Quantities of Q-systems from Dimer Integrable Systems. 1 - Yue Cai, Richard Ehrenborg

, Margaret A. Readdy
:
q-Stirling Identities Revisited. 1 - István Tomon:

Almost Tiling of the Boolean Lattice with Copies of a Poset. 1 - Bart De Bruyn:

Non-Classical Hyperplanes of Finite Thick Dual Polar Spaces. 1 - Yoshimi Egawa, Michitaka Furuya:

The Existence of a Path-Factor without Small Odd Paths. 1 - Thomas Kahle

, Mateusz Michalek:
Obstructions to Combinatorial Formulas for Plethysm. 1 - Mikhail E. Muzychuk, Gábor Somlai

:
The Cayley Isomorphism Property for Cayley Maps. 1 - Anthony B. Evans:

The Orthomorphism Graph ℒ3(q). 1 - Frédéric Fauvet, Loïc Foissy, Dominique Manchon:

Operads of Finite Posets. 1 - François Dross, Mickaël Montassier, Alexandre Pinlou:

Partitioning Sparse Graphs into an Independent Set and a Forest of Bounded Degree. 1 - Jason I. Brown

, Ben Cameron:
On the Stability of Independence Polynomials. 1 - Danila D. Cherkashin

:
Coloring Cross-Intersecting Families. 1 - José Luis Ramírez, Sergio N. Villamarin, Diego Villamizar

:
Eulerian Numbers Associated with Arithmetical Progressions. 1 - Nathann Cohen, Frédéric Havet:

On the Minimum Size of an Identifying Code Over All Orientations of a Graph. 1 - Michael Stiebitz, Bjarne Toft

:
A Brooks Type Theorem for the Maximum Local Edge Connectivity. 1 - Landon Rabern:

A Better Lower Bound on Average Degree of Online k-List-Critical Graphs. 1 - Stefko Miklavic:

On Bipartite Q-Polynomial Distance-Regular Graphs with Diameter 9, 10, or 11. 1 - Konstanty Junosza-Szaniawski:

Upper Bound on the Circular Chromatic Number of the Plane. 1 - Ying Wang, Guoce Xin:

A Classification of Motzkin Numbers Modulo 8. 1 - Guoli Ding, Joshua Fallon, Emily Marshall:

On Almost-Planar Graphs. 1 - Alex Cameron:

Extremal Numbers for Directed Hypergraphs with Two Edges. 1 - Huan Xiong

:
Core Partitions with Distinct Parts. 1 - Sinho Chewi, Venkat Anantharam:

A Combinatorial Proof of a Formula of Biane and Chapuy. 1 - Oliver T. Dasbach

, Heather M. Russell:
Equivalence of Edge Bicolored Graphs on Surfaces. 1 - Brent Holmes:

On the Diameter of Dual Graphs of Stanley-Reisner Rings and Hirsch Type Bounds on Abstractions of Polytopes. 1 - Borut Luzar, Pascal Ochem, Alexandre Pinlou:

On Repetition Thresholds of Caterpillars and Trees of Bounded Degree. 1 - Zdenek Dvorák, Tom Kelly:

Induced 2-Degenerate Subgraphs of Triangle-Free Planar Graphs. 1 - Jürgen Herzog, Giancarlo Rinaldo:

On the Extremal Betti Numbers of Binomial Edge Ideals of Block Graphs. 1 - Tyrrell B. McAllister

, Hélène O. Rochais:
Periods of Ehrhart Coefficients of Rational Polytopes. 1 - Ben P. Zhou:

Connected Order Ideals and P-Partitions. 1 - Sanjay Ramassamy

:
Extensions of Partial Cyclic Orders, Euler Numbers and Multidimensional Boustrophedons. 1 - Hong Wang:

Covering a Graph with Cycles of Length at Least 4. 1 - Martha Yip:

Rook Placements and Jordan Forms of Upper-Triangular Nilpotent Matrices. 1 - Stefan David, Hunter Spink, Marius Tiba:

Symmetric Chain Decompositions of Products of Posets with Long Chains. 1 - Maria Chudnovsky

, Sophie Spirkl
, Shira Zerbib:
Piercing Axis-Parallel Boxes. 1 - Angela Aguglia, Daniele Bartoli, Leo Storme

, Zsuzsa Weiner:
A Characterization of Hermitian Varieties as Codewords. 1 - Michael Anastos, Alan M. Frieze, Wesley Pegden

:
Constraining the Clustering Transition for Colorings of Sparse Random Graphs. 1 - Karen L. Collins, Ann N. Trenk:

Finding Balance: Split Graphs and Related Classes. 1 - Grzegorz Gutowski

:
Every Plane Graph is Facially-Non-Repetitively C-choosable. 1
Volume 25, Number 2, 2018
- Liying Kang, Lele Liu

, Erfang Shan:
Sharp Lower Bounds on the Spectral Radius of Uniform Hypergraphs Concerning Degrees. 2 - Elizandro Max Borba, Uwe Schwerdtfeger:

Eigenvalue Bounds for the Signless p-Laplacian. 2 - Tuvi Etzion, Niv Hooker:

Residual q-Fano Planes and Related Structures. 2 - Jason O'Neill:

On the Poset and Asymptotics of Tesler Matrices. 2 - Babak Miraftab, Tim Rühmann:

Hamilton Circles in Cayley Graphs. 2 - Pablo Spiga:

On the Existence of Frobenius Digraphical Representations. 2 - Qingying Deng, Xian'an Jin, Fengming Dong

, Eng Guan Tay:
Even Subgraph Expansions for the Flow Polynomial of Planar Graphs with Maximum Degree at Most 4. 2 - Tuvi Etzion:

A New Approach for Examining q-Steiner Systems. 2 - Christoph Hofer-Temmel, Florian Lehner

:
Clique Trees of Infinite Locally Finite Chordal Graphs. 2 - Richard H. Hammack, Wilfried Imrich:

Vertex-Transitive Direct Products of Graphs. 2 - Natalie C. Behague

:
Hypergraph Saturation Irregularities. 2 - Jie Han:

On Vertex-Disjoint Paths in Regular Graphs. 2 - Barnabás Janzer

:
A New Upper Bound for Cancellative Pairs. 2 - Jacob Fox, Lisa Sauermann:

Erdős-Ginzburg-Ziv Constants by Avoiding Three-Term Arithmetic Progressions. 2 - Jan Goedgebeur:

On the Smallest Snarks with Oddness 4 and Connectivity 2. 2 - Lili Shen, Qizhong Lin, Qinghai Liu:

Bipartite Ramsey Numbers for Graphs of Small Bandwidth. 2 - Fabrizio Zanello:

On Bergeron's Positivity Problem for q-Binomial Coefficients. 2 - Victor Falgas-Ravry

, Allan Lo:
Subgraphs with Large Minimum ℓ-Degree in Hypergraphs where Almost All ℓ-Degrees are Large. 2 - Zhicheng Gao, Andrew MacFie, Qiang Wang:

Counting Compositions over Finite Abelian Groups. 2 - Tim E. Wilson

, David R. Wood:
Anagram-Free Graph Colouring. 2 - Christos Pelekis, Israel Rocha:

A Generalization of Erdős' Matching Conjecture. 2 - George F. McNulty:

Some Variations on a Theme of Irina Mel'nichuk Concerning the Avoidability of Patterns in Strings of Symbols. 2 - Henning Bruhn, Laura Gellert, Richard Lang

:
Chromatic Index, Treewidth and Maximum Degree. 2 - Jakub Kozik, Grzegorz Matecki:

Deferred On-Line Bipartite Matching. 2 - Dragan Marusic

:
Semiregular Automorphisms in Vertex-Transitive Graphs of Order 3p2. 2 - Gunther Cornelissen, Janne Kool:

Edge Reconstruction of the Ihara Zeta Function. 2 - Lara Pudwell, Eric Rowland

:
Avoiding Fractional Powers over the Natural Numbers. 2 - Bartlomiej Bosek, Hal A. Kierstead, Tomasz Krawczyk, Grzegorz Matecki, Matthew E. Smith:

An Easy Subexponential Bound for Online Chain Partitioning. 2 - Beka Ergemlidze, Ervin Györi, Abhishek Methuku

:
A Note on the Linear Cycle Cover Conjecture of Gyárfás and Sárközy. 2 - Foster Tom, Stephanie van Willigenburg:

Necessary Conditions for Schur-Maximality. 2 - Stefan Ehard, Felix Joos:

Paths and Cycles in Random Subgraphs of Graphs with Large Minimum Degree. 2 - Rose McCarty

:
The Extremal Function and Colin de Verdière Graph Parameter. 2 - Ralph Keusch:

A New Upper Bound on the Game Chromatic Index of Graphs. 2 - Grzegorz Gutowski

, Ming Han, Tomasz Krawczyk, Xuding Zhu:
Defective 3-Paintability of Planar Graphs. 2 - Bogdan Chornomaz:

Convex Geometries are Extremal for the Generalized Sauer-Shelah Bound. 2 - Mihai Ciucu:

Symmetries of Shamrocks II: Axial Shamrocks. 2 - Gili Golan

, Songling Shan
:
Nonempty Intersection of Longest Paths in 2K2-Free Graphs. 2 - Ron M. Adin

, Eli Bagno, Estrella Eisenberg, Shulamit Reches, Moriah Sigron:
On Two-Sided Gamma-Positivity for Simple Permutations. 2 - Nathann Cohen, Frédéric Havet, William Lochet

, Raul Lopes:
Bispindles in Strongly Connected Digraphs with Large Chromatic Number. 2 - Edita Rollová, Michael Schubert, Eckhard Steffen:

Flows in Signed Graphs with Two Negative Edges. 2 - Alexander Woo

:
Hultman Elements for the Hyperoctahedral Groups. 2 - Mehtaab Sawhney, David Stoner:

On a Conjecture Regarding Permutations which Destroy Arithmetic Progressions. 2 - Frank Duque

, Hernán González-Aguilar, César Hernández-Vélez, Jesús Leaños, Carolina Medina:
The Complexity of Computing the Cylindrical and the t-Circle Crossing Number of a Graph. 2 - Sami Assaf:

Toward the Schur Expansion of Macdonald Polynomials. 2 - Manuel Fernández, Nicholas Sieger, Michael Tait:

Maximal Planar Subgraphs of Fixed Girth in Random Graphs. 2 - Margit Voigt, Arnfried Kemnitz:

A Note on Not-4-List Colorable Planar Graphs. 2 - Elizabeth Maltais, Lucia Moura, Mike Newman:

Binary Covering Arrays on Tournaments. 2 - Gregory J. Clark, Joshua N. Cooper

:
On the Adjacency Spectra of Hypertrees. 2 - Ted Dobson:

On the Isomorphism Problem for Cayley Graphs of Abelian Groups whose Sylow Subgroups are Elementary Abelian or Cyclic. 2 - Christian Houdré, Chen Xu:

A Note on the Expected Length of the Longest Common Subsequences of two i.i.d. Random Permutations. 2 - Jang Soo Kim, U.-Keun Song:

Proof of Chapoton's Conjecture on Newton Polygons of q-Ehrhart Polynomials. 2 - Samuel Braunfeld

:
Homogeneous 3-Dimensional Permutation Structures. 2 - Ben Clark, James G. Oxley, Stefan H. M. van Zwam:

Relaxations of GF(4)-Representable Matroids. 2 - Demetris Hadjiloucas, Ioannis Michos, Christina Savvidou:

On Super-Strong Wilf Equivalence Classes of Permutations. 2 - Andrzej Dudek, Sean English

, Alan M. Frieze:
On Rainbow Hamilton Cycles in Random Hypergraphs. 2 - Petr Gregor

, Tomás Novotný, Riste Skrekovski
:
Extending Perfect Matchings to Gray Codes with Prescribed Ends. 2
Volume 25, Number 3, 2018
- Katherine Edwards, António Girão, Jan van den Heuvel, Ross J. Kang, Gregory J. Puleo, Jean-Sébastien Sereni:

Extension from Precoloured Sets of Edges. 3 - Relinde P. M. J. Jurrius

, Ruud Pellikaan:
Defining the q-Analogue of a Matroid. 3 - Max Pitz:

Hamilton Cycles in Infinite Cubic Graphs. 3 - Thomas F. Bloom, Anita Liebenau:

Ramsey equivalence of Kn and Kn+Kn-1. P3.4 - Daniel W. Cranston:

Proper Distinguishing Colorings with Few Colors for Graphs with Girth at Least 5. 3 - Charles Jordan, Michael Joswig, Lars Kastner

:
Parallel Enumeration of Triangulations. 3 - Seung-Il Choi, Jae-Hoon Kwon:

Crystals and Schur P-Positive Expansions. 3 - Leila Sharifan, Ali Akbar Estaji, Ghazaleh Malekbala:

Primary Decomposition of Ideals of Lattice Homomorphisms. 3 - Zhaohong Huang, Jiangmin Pan:

On Arc-Transitive Metacyclic Covers of Graphs with Order Twice a Prime. 3 - Ivailo Hartarsky

:
Maximal Bootstrap Percolation Time on the Hypercube via Generalised Snake-in-the-Box. 3 - Benedikt Stufler:

Random Enriched Trees with Applications to Random Graphs. 3 - Attila Joó:

Countable Menger's Theorem with Finitary Matroid Constraints on the Ingoing Edges. 3 - Karl Heuer

:
Hamiltonicity in Locally Finite Graphs: Two Extensions and a Counterexample. 3 - Thomas Selig, Jason P. Smith, Einar Steingrímsson:

EW-Tableaux, Le-Tableaux, Tree-Like Tableaux and the Abelian Sandpile Model. 3 - Imre Leader, Eero Räty:

A Note on Intervals in the Hales-Jewett Theorem. 3 - Megumi Asada

, Ryan C. Chen, Florian Frick, Frederick Huang, Maxwell Polevy, David Stoner, Ling Hei Tsang, Zoe Wellner
:
On Reay's Relaxed Tverberg Conjecture and Generalizations of Conway's Thrackle Conjecture. 3 - Heather C. Smith, László A. Székely, Hua Wang, Shuai Yuan:

On Different "Middle Parts" of a Tree. 3 - Philip DeOrsey, Michael Ferrara, Nathan Graber, Stephen G. Hartke, Luke L. Nelsen, Eric Sullivan, Sogol Jahanbekam, Bernard Lidický, Derrick Stolee, Jennifer White:

On the Strong Chromatic Index of Sparse Graphs. 3 - Mitchell Lee:

Sets with Few Differences in Abelian Groups. 3 - Andrew Elvey Price, Muhammad Adib Surani, Sanming Zhou

:
The Isoperimetric Number of the Incidence Graph of PG(n, q). 3 - Sandra R. Kingan:

Quasiregular Matroids. 3 - Domenico Catalano, Maria Elisa Fernandes, Isabel Hubard, Dimitri Leemans

:
Hypertopes with Tetrahedral Diagram. 3 - Michael H. Albert, Michael Engen, Jay Pantone

, Vincent Vatter:
Universal Layered Permutations. 3 - Sebastian Siebertz:

Reconfiguration on Nowhere Dense Graph Classes. 3 - Miguel A. Méndez, Rafael Sánchez Lamoneda:

Monops, Monoids and Operads: The Combinatorics of Sheffer Polynomials. 3 - Fengming Dong:

On Graphs whose Flow Polynomials have Real Roots Only. 3 - Krzysztof Choromanski, Dvir Falik, Anita Liebenau

, Viresh Patel, Marcin Pilipczuk:
Excluding Hooks and their Complements. 3 - Yan-Li Qin, Jin-Xin Zhou

:
Cubic Edge-Transitive Bi-p-Metacirculants. 3 - Fiachra Knox, Robert Sámal

:
Linear Bound for Majority Colourings of Digraphs. 3 - Alan J. Cain

, António Malheiro
:
Identities in Plactic, Hypoplactic, Sylvester, Baxter, and Related Monoids. 3 - Mingfang Huang, Michael Santana, Gexin Yu:

Strong Chromatic Index of Graphs With Maximum Degree Four. 3 - Ararat Harutyunyan, Tien-Nam Le, Alantha Newman, Stéphan Thomassé:

Domination and Fractional Domination in Digraphs. 3 - Marlo Eugster, Frank Mousset:

Vertex Covering with Monochromatic Pieces of few Colours. 3 - Elad Aigner-Horev, David Conlon, Hiêp Hàn, Yury Person, Mathias Schacht

:
Quasirandomness in Hypergraphs. 3 - Andrzej Dudek, Pawel Pralat

:
Note on the Multicolour Size-Ramsey Number for Paths, . 3 - Marzieh Akbari, Neil I. Gillespie, Cheryl E. Praeger

:
Increasing the Minimum Distance of Codes by Twisting. 3 - Anna Stokke:

An Orthosymplectic Pieri Rule. 3 - Johannes Carmesin:

Topological Infinite Gammoids, and a New Menger-Type Theorem for Infinite Graphs. 3 - Stefan Felsner, Hendrik Schrezenmaier, Raphael Steiner

:
Pentagon Contact Representations. 3 - Xing Shi Cai, Svante Janson:

Non-Fringe Subtrees in Conditioned Galton - Watson Trees. 3 - Lucas Fresse:

A Notion of Inversion Number Associated to Certain Quiver Flag Varieties. 3 - Graham E. Farr, Andrew Y. Z. Wang:

Powerful Sets: a Generalisation of Binary Matroids. 3 - Annie Raymond

:
The Turán Polytope. 3 - Allan Lo, Viresh Patel:

Hamilton Cycles in Sparse Robustly Expanding Digraphs. 3 - Yi Zhang, Yi Zhao, Mei Lu:

Vertex Degree Sums for Perfect Matchings in 3-Uniform Hypergraphs. 3 - David Anderson:

Diagrams and Essential Sets for Signed Permutations. 3 - Paul Johnson:

Lattice Points and Simultaneous Core Partitions. 3 - Maximilien Gadouleau:

On the Rank and Periodic Rank of Finite Dynamical Systems. 3 - Dániel Gerbner, Balázs Patkós, Máté Vizer:

Forbidden Subposet Problems for Traces of Set Families. 3 - Judith Jagenteufel:

A Sundaram type Bijection for SO(3): Vacillating Tableaux and Pairs of Standard Young Tableaux and Orthogonal Littlewood-Richardson Tableaux. 3 - Gabriela Araujo-Pardo

, Juan José Montellano-Ballesteros
, Mika Olsen
, Christian Rubio-Montiel
:
The Diachromatic Number of Digraphs. 3
Volume 25, Number 4, 2018
- Michael Borinsky

:
Generating Asymptotics for Factorially Divergent Sequences. 4 - Mark H. Siggers:

Reflexive Graphs with Near Unanimity but no Semilattice Polymorphisms. 4 - Isaiah Harney, Heide Gluesing-Luerssen:

On Robust Colorings of Hamming-Distance Graphs. 4 - Brendan Pawlowski:

Cohomology Classes of Interval Positroid Varieties and a Conjecture of Liu. 4 - Marc Noy, Lander Ramos:

Random Planar Maps and Graphs with Minimum Degree Two and Three. 4 - Guo-Niu Han, Huan Xiong

:
Polynomiality of Certain Average Weights for Oscillating Tableaux. 4 - Ewan Davies

:
Counting Proper Colourings in 4-Regular Graphs via the Potts Model. 4 - Matthias Hamann

:
Planar Transitive Graphs. 4 - Bruce W. Westbury

:
Coboundary Categories and Local Rules. 4 - Yibo Gao:

The Largest Pure Partial Planes of Order 6 Have Size 25. 4 - Alexey Gordeev

:
Constant Terms of Near-Dyson Polynomials. 4 - Xiaoyu He

:
Linear Dependence Between Hereditary Quasirandomness Conditions. 4 - Li Su, Liying Kang, Honghai Li, Erfang Shan:

The Matching Polynomials and Spectral Radii of Uniform Supertrees. 4 - Gabriel Coutinho, Chris D. Godsil, Krystal Guo

, Hanmeng Zhan
:
A New Perspective on the Average Mixing Matrix. 4 - Gary R. W. Greaves

, Leonard H. Soicher:
On the Clique Number of a Strongly Regular Graph. 4 - Saúl A. Blanco

:
Flip Posets of Bruhat Intervals. 4 - Darij Grinberg

:
Shuffle-Compatible Permutation Statistics II: The Exterior Peak Set. 4 - Jean Cardinal, Stefan Langerman

, Pablo Pérez-Lantero
:
On the Diameter of Tree Associahedra. 4 - Rahul Ilango, Oliver Pechenik

, Michael Zlatin:
Unique Rectification in d-Complete Posets: Towards the K-Theory of Kac-Moody Flag Varieties. 4 - Dun Qiu, Jeffrey B. Remmel, Emily Sergel, Guoce Xin:

On the Schur Positivity of Δe2 en[X]. P4.20 - Janos Vidali

:
Using Symbolic Computation to Prove Nonexistence of Distance-Regular Graphs. 4 - Mark E. Watkins:

Infinite Graphical Frobenius Representations. 4 - Will Sawin:

Bounds for Matchings in Nonabelian Groups. 4 - Robin Anderson, Shuliang Bai, Fidel Barrera-Cruz, Éva Czabarka, Giordano Da Lozzo, Natalie L. F. Hobson, Jephian C.-H. Lin

, Austin Mohr, Heather C. Smith, László A. Székely, Hays Whitlatch:
Analogies between the Crossing Number and the Tangle Crossing Number. 4 - Bin Han:

λ-Euler's Difference Table for Colored Permutations. 4 - Robert Cori, Gábor Hetyei:

Counting Partitions of a Fixed Genus. 4 - Michael A. Henning

, Anders Yeo
:
On Upper Transversals in 3-Uniform Hypergraphs. 4 - Changjiang Bu, Haifeng Li, Jiang Zhou:

Inverse Perron Values and Connectivity of a Uniform Hypergraph. 4 - Allan Lo, Nicolás Sanhueza-Matamala

, Guanghui Wang:
Density of Monochromatic Infinite Paths. 4 - Anna A. Taranenko

:
Transversals, Plexes, and Multiplexes in Iterated Quasigroups. 4 - Yuta Watanabe:

An Algebra Associated with a Flag in a Subspace Lattice over a Finite Field and the Quantum Affine Algebra. 4 - Chaya Keller

, Shakhar Smorodinsky
:
On the Union Complexity of Families of Axis-Parallel Rectangles with a Low Packing Number. 4 - Glenn G. Chappell, Chris Hartman:

Path Choosability of Planar Graphs. 4 - Kustaa Kangas, Petteri Kaski, Janne H. Korhonen, Mikko Koivisto:

On the Number of Connected Sets in Bounded Degree Graphs. 4 - András Gyárfás, Stephen G. Hartke, Charles Viss:

Uniquely Kr(k)-Saturated Hypergraphs. 4 - Andrew McDowell, Richard Mycroft:

Hamilton ℓ-Cycles in Randomly Perturbed Hypergraphs. 4 - Jesús A. De Loera, Christopher O'Neill, Dane Wilburne:

Random Numerical Semigroups and a Simplicial Complex of Irreducible Semigroups. 4 - Zeev Dvir, Shay Moran:

A Sauer-Shelah-Perles Lemma for Sumsets. 4 - Vladimir Nikiforov, Michael Tait, Craig Timmons:

Degenerate Turán Problems for Hereditary Properties. 4 - Maarten De Boeck, Geertrui Van de Voorde:

A New Lower Bound for the Size of an Affine Blocking Set. 4 - Amanda Burcroff

:
(k, \lambda)-Anti-Powers and Other Patterns in Words. 4 - Connor Ahlbach, Joshua P. Swanson:

Cyclic Sieving, Necklaces, and Branching Rules Related to Thrall's Problem. 4 - Evan Chen

:
A Family of Partially Ordered Sets with Small Balance Constant. 4 - Ange Bigeni

:
Combinatorial Interpretations of the Kreweras Triangle in Terms of Subset Tuples. 4 - Yen-Jen Cheng, Jephian C.-H. Lin

:
Graph Families with Constant Distance Determinant. 4 - Noah Golowich:

Coloring Chains for Compression with Uncertain Priors. 4 - Maryam Bahrani, Jérémie O. Lumbroso

:
Enumerations, Forbidden Subgraph Characterizations, and the Split-Decomposition. 4 - Ron Aharoni, Daniel Soltész:

Independent Sets in the Union of Two Hamiltonian Cycles. 4 - Konrad Engel

, Sebastian Hanisch:
Bandwidth of Graphs Resulting from the Edge Clique Covering Problem. 4 - Dmitry Jakobson, Calum MacRury, Sergey Norin, Lise Turner:

Distribution of Coefficients of Rank Polynomials for Random Sparse Graphs. 4 - Louis Esperet

, Veit Wiechert:
Boxicity, Poset Dimension, and Excluded Minors. 4 - Andrey Kupavskii:

Random Kneser Graphs and Hypergraphs. 4 - Jordan Lambert

:
Theta-Vexillary Signed Permutations. 4 - Miquel A. Fiol, Giuseppe Mazzuoccolo

, Eckhard Steffen:
Measures of Edge-Uncolorability of Cubic Graphs. 4 - Pavel Klavík, Maria Saumell:

Minimal Obstructions for Partial Representations of Interval Graphs. 4 - Colin McDiarmid, Dieter Mitsche, Pawel Pralat

:
Clique Colourings of Geometric Graphs. 4 - Shi-Mei Ma, Jun Ma, Yeong-Nan Yeh:

On Certain Combinatorial Expansions of the Legendre-Stirling Numbers. 4 - Tri Lai:

Lozenge Tilings of a Halved Hexagon with an Array of Triangles Removed from the Boundary, Part II. 4 - Deqiong Li, Yaoping Hou:

Hypergraph Coverings and their Zeta Functions. 4 - Sebastian M. Cioaba, Felix Lazebnik, Shuying Sun:

Spectral and Combinatorial Properties of Some Algebraically Defined Graphs. 4 - Jacob Fox, János Pach, Andrew Suk:

Ramsey-Turán Numbers for Semi-Algebraic Graphs. 4 - Bartlomiej Bosek

, Przemyslaw Gordinowicz
, Jaroslaw Grytczuk
, Nicolas Nisse, Joanna Sokól, Malgorzata Sleszynska-Nowak:
Centroidal Localization Game. 4 - Lingsheng Shi, Zhang Zhang:

Signed Cycle Double Covers. 4 - T. Kyle Petersen

:
A Two-Sided Analogue of the Coxeter Complex. 4 - Luiz Emilio Allem

, Antonio Cafure, Ezequiel Dratman
, Luciano N. Grippo, Martín D. Safe, Vilmar Trevisan:
Partial Characterization of Graphs Having a Single Large Laplacian Eigenvalue. 4 - Anurag Bishnoi, Sam Mattheus, Jeroen Schillewaert:

Minimal Multiple Blocking Sets. 4

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