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The Electronic Journal of Combinatorics, Volume 27
Volume 27, Number 1, 2020
- Giulio Cerbai

, Lapo Cioni
, Luca Ferrari
:
Stack Sorting with Increasing and Decreasing Stacks. 1 - Samantha Dahlberg, Adrian She, Stephanie van Willigenburg:

Schur and e-Positivity of Trees and Cut Vertices. 1 - Guoce Xin, Yueming Zhong

:
On Parity Unimodality of q-Catalan Polynomials. 1 - Aadyot Bhatnagar:

Voting Rules that are Unbiased but not Transitive-Symmetric. 1 - Michael Drmota, Lander Ramos, Clément Requilé

, Juanjo Rué:
Maximal Independent Sets and Maximal Matchings in Series-Parallel and Related Graph Classes. 1 - John Bamberg

, Stephen P. Glasby
, Scott Harper
, Cheryl E. Praeger
:
Permutations with Orders Coprime to a Given Integer. 1 - David Marchant

:
2413-Balloon Permutations and the Growth of the Möbius Function. 1 - François Pirot

, Jean-Sébastien Sereni, Riste Skrekovski:
Variations on the Petersen Colouring Conjecture. 1 - Aenne Benjes:

Incompatible Double Posets and Double Order Polytopes. 1 - Hailun Zheng:

Ear Decomposition and Balanced Neighborly Simplicial Manifolds. 1 - Robert Mcalmon, Suho Oh

:
The Rank Function of a Positroid and Non-Crossing Partitions. 1 - Thao Do:

The Largest Complete Bipartite Subgraph in Point-Hyperplane Incidence Graphs. 1 - Patrick Bennett

:
The Sum-Free Process. 1 - Cesar Ceballos, Arnau Padrol

, Camilo Sarmiento:
The ν-Tamari Lattice via ν-Trees, ν-Bracket Vectors, and Subword Complexes. 1 - Yanjun Li, Jácint Szabó:

An Edmonds-Gallai-Type Decomposition for the j-Restricted k-Matching Problem. 1 - Martin Balko

, Josef Cibulka
, Karel Král, Jan Kyncl
:
Ramsey Numbers of Ordered Graphs. 1 - Tom Braden

, Artem Vysogorets:
Kazhdan-Lusztig Polynomials of Matroids Under Deletion. 1 - Jimeng Xiao, Casey Tompkins:

On Forbidden Poset Problems in the Linear Lattice. 1 - Giampiero Chiaselotti, Tommaso Gentile, Federico Infusino:

Lattice Representations with Set Partitions Induced by Pairings. 1 - Ilkyoo Choi, Jinha Kim

, Boram Park:
Collapsibility of Non-Cover Complexes of Graphs. 1 - Stefaan De Winter

, Klaus Metsch:
Perfect 2-Colorings of the Grassmann Graph of Planes. 1 - Nishad Kothari

, Marcelo Henriques de Carvalho, Claudio L. Lucchesi, Charles H. C. Little:
On Essentially 4-Edge-Connected Cubic Bricks. 1 - Ferenc Szöllösi, Patric R. J. Östergård:

Constructions of Maximum Few-Distance Sets in Euclidean Spaces. 1 - Cédric Pilatte

:
On the Sets of n Points Forming n+1 Directions. 1 - Robert Brijder, Lorenzo Traldi:

A Characterization of Circle Graphs in Terms of Multimatroid Representations. 1 - Mikhail Isaev, Tejas Iyer

, Brendan D. McKay
:
Asymptotic Enumeration of Orientations of a Graph as a Function of the Out-Degree Sequence. 1 - Xin Fang, Ghislain Fourier, Christoph Pegel

:
The Minkowski Property and Reflexivity of Marked Poset Polytopes. 1 - Michael Cuntz

, Paul Mücksch
:
MAT-free Reflection Arrangements. 1 - Ebrahim Ghorbani, Sara Kamali, Gholamreza B. Khosrovshahi, Denis S. Krotov:

On the Volumes and Affine Types of Trades. 1 - Yahav Alon, Michael Krivelevich:

Random Graph's Hamiltonicity is Strongly Tied to its Minimum Degree. 1 - Ryan R. Martin

, Abhishek Methuku, Andrew J. Uzzell, Shanise Walker:
A Simple Proof for a Forbidden Subposet Problem. 1 - Xiaoyu He

, Yuval Wigderson:
Multicolor Ramsey Numbers via Pseudorandom Graphs. 1 - Alex Christensen, Pamela E. Harris

, Zakiya Jones, Marissa Loving, Andrés Ramos Rodríguez, Joseph Rennie, Gordon Rojas Kirby:
A Generalization of Parking Functions Allowing Backward Movement. 1 - Jean-Christophe Aval, Théo Karaboghossian, Adrian Tanasa:

The Hopf Monoid of Hypergraphs and its Sub-Monoids: Basic Invariant and Reciprocity Theorem. 1 - Francesco Pavese

:
On q-Covering Designs. 1 - Johan Håstad, Guillaume Lagarde, Joseph Swernofsky:

d-Galvin Families. 1 - Nicola Pace, Angelo Sonnino

:
One-Factorisations of Complete Graphs Constructed in Desarguesian Planes of Certain Odd Square Orders. 1 - Samuel Braunfeld

, Pierre Simon:
The Classification of Homogeneous Finite-Dimensional Permutation Structures. 1 - Markus Fulmek

:
A Statistics-Respecting Bijection Between Permutation Matrices and Descending Plane Partitions Without Special Parts. 1 - Asaf Ferber, Lior Hirschfeld:

Co-degrees Resilience for Perfect Matchings in Random Hypergraphs. 1 - Ron Aharoni, Eli Berger, Maria Chudnovsky

, Frédéric Havet, Zilin Jiang
:
Cooperative Colorings of Trees and of Bipartite Graphs. 1 - Neil I. Gillespie, Daniel R. Hawtin

, Cheryl E. Praeger
:
2-Neighbour-Transitive Codes with Small Blocks of Imprimitivity. 1 - On-Hei Solomon Lo, Jens M. Schmidt

, Nico Van Cleemput, Carol T. Zamfirescu:
Shortness Coefficient of Cyclically 4-Edge-Connected Cubic Graphs. 1 - Robert A. Krueger:

Generalized Ramsey Numbers: Forbidding Paths with Few Colors. 1 - Denis S. Krotov, Konstantin V. Vorob'ev

:
On Unbalanced Boolean Functions with Best Correlation Immunity. 1 - Arthur Hoffmann-Ostenhof:

The Nash-Williams Conjecture and the Dominating Cycle Conjecture. 1 - Seunghyun Seo, Ae Ja Yee:

Index of Seaweed Algebras and Integer Partitions. 1 - Jaroslaw Grytczuk

, Hubert Kordulewski, Artur Niewiadomski:
Extremal Square-Free Words. 1 - Rikke Langhede, Carsten Thomassen

:
Group Connectivity and Group Coloring: Small Groups versus Large Groups. 1 - Mitchel T. Keller, Stephen J. Young

:
Hereditary Semiorders and Enumeration of Semiorders by Dimension. 1 - Aram Bingham, Özlem Ugurlu

:
Sects and Lattice Paths over the Lagrangian Grassmannian. 1 - F. Michel Dekking, Jeffrey O. Shallit, Neil J. A. Sloane:

Queens in Exile: Non-attacking Queens on Infinite Chess Boards. 1 - János Komlós, Emily Sergel, Gábor E. Tusnády:

The Asymptotic Normality of (s, s+1)-Cores with Distinct Parts. 1 - Barnabás Janzer

:
Projections of Antichains. 1 - Fuliang Lu, Xing Feng, Yan Wang:

b-Invariant Edges in Essentially 4-Edge-Connected Near-Bipartite Cubic Bricks. 1 - Marthe Bonamy, Pierre Charbit

, Oscar Defrain
, Gwenaël Joret, Aurélie Lagoutte
, Vincent Limouzy, Lucas Pastor, Jean-Sébastien Sereni:
Revisiting a Theorem by Folkman on Graph Colouring. 1 - Mehdi Makhul

, Oliver Roche-Newton
, Audie Warren
, Frank de Zeeuw:
Constructions for the Elekes-Szabó and Elekes-Rónyai Problems. 1 - András Pongrácz

:
Discordant Voting Protocols for Cyclically Linked Agents. 1 - Jeff Kahn, Jinyoung Park

:
Stability for Maximal Independent Sets. 1 - József Balogh, Felix Christian Clemen, Jozef Skokan

, Adam Zsolt Wagner:
The Ramsey Number of Fano Plane Versus Tight Path. 1 - Tri Lai:

Lozenge Tilings of Hexagons with Central Holes and Dents. 1 - Mustafa Gezek

, Rudi Mathon, Vladimir D. Tonchev:
Maximal Arcs, Codes, and New Links Between Projective Planes of Order 16. 1 - Jørgen Bang-Jensen

, Thomas Bellitto, Thomas Schweser
, Michael Stiebitz:
Hajós and Ore Constructions for Digraphs. 1 - Jeffrey Matayoshi:

Well-Graded Families and the Union-Closed Sets Conjecture. 1 - Jürgen Herzog, Fahimeh Khosh-Ahang, Somayeh Moradi

, Masoomeh Rahimbeigi:
Sortable Simplicial Complexes and t-Independence Ideals of Proper Interval Graphs. 1 - Luis Fredes

, Avelio Sepúlveda
:
Tree-Decorated Planar Maps. 1 - Matas Sileikis

, Lutz Warnke:
Upper Tail Bounds for Stars. 1
Volume 27, Number 2, 2020
- Jyotirmoy Ganguly, Amritanshu Prasad, Steven Spallone:

On the Divisibility of Character Values of the Symmetric Group. 2 - Radek Husek, Robert Sámal

:
Homomorphisms of Cayley graphs and Cycle Double Covers. 2 - Frédéric Chyzak, Karen A. Yeats

:
Bijections between Łukasiewicz Walks and Generalized Tandem Walks. 2 - Sergey Norin, Bruce A. Reed, Andrew Thomason, David R. Wood:

A Lower Bound on the Average Degree Forcing a Minor. 2 - Matteo Gallet

, Georg Grasegger
, Josef Schicho:
Counting Realizations of Laman Graphs on the Sphere. 2 - Jonathan Bloom, Sergi Elizalde

, Yuval Roichman:
On Cyclic Schur-Positive Sets of Permutations. 2 - Colin Defant, Noah Kravitz, Ashwin Sah:

Supertrees. 2 - Shimon Garti

, Menachem Magidor, Saharon Shelah:
Infinite Monochromatic Paths and a Theorem of Erdős-Hajnal-Rado. 2 - Yongli Zhang, Shenglin Zhou:

Flag-Transitive Non-Symmetric 2-Designs with (r, λ)=1 and Exceptional Groups of Lie Type. 2 - Jean-Luc Baril, David I. Bevan

, Sergey Kirgizov:
Bijections between Directed Animals, Multisets and Grand-Dyck Paths. 2 - Primoz Skraba, Gugan Thoppe, D. Yogeshwaran

:
Randomly Weighted d-Complexes: Minimal Spanning Acycles and Persistence Diagrams. 2 - József Balogh, Béla Csaba, Yifan Jing

, András Pluhár:
On the Discrepancies of Graphs. 2 - Philippe Di Francesco

, Emmanuel Guitter
:
Twenty-Vertex Model with Domain Wall Boundaries and Domino Tilings. 2 - Vladislav V. Kabanov

, Elena V. Konstantinova
, Leonid Shalaginov
, Alexandr Valyuzhenich
:
Minimum Supports of Eigenfunctions with the Second Largest Eigenvalue of the Star Graph. 2 - Shalom Eliahou

:
A Graph-Theoretic Approach to Wilf's Conjecture. 2 - Beka Ergemlidze, Ervin Györi, Abhishek Methuku

:
3-Uniform Hypergraphs without a Cycle of Length Five. 2 - Konrad J. Swanepoel:

Favourite Distances in 3-Space. 2 - Peter Frankl:

Erdős-Ko-Rado Theorem for a Restricted Universe. 2 - Kasra Alishahi, Mohaddeseh Rajaee, Ali Rajaei

:
Quantum Discrepancy: A Non-Commutative Version of Combinatorial Discrepancy. 2 - Mathilde Bouvel, Marni Mishna

, Cyril Nicaud:
Some Families of Trees Arising in Permutation Analysis. 2 - Gonçalo Gutierres

, Ricardo Mamede
, José Luis Esteves dos Santos:
Commutation Classes of the Reduced Words for the Longest Element of Sn. 2 - Byung-Hak Hwang

, Jang Soo Kim, Jaeseong Oh
, Sang-Hoon Yu:
On Linearization Coefficients of q-Laguerre Polynomials. 2 - Paul Zinn-Justin:

Honeycombs for Hall Polynomials. 2 - Frank Röttger

:
Asymptotics of a Locally Dependent Statistic on Finite Reflection Groups. 2 - James Davies, Carsten Thomassen

:
Locally Hamiltonian Graphs and Minimal Size of Maximal Graphs on a Surface. 2 - Vojtech Dvorák:

A Note on Norine's Antipodal-Colouring Conjecture. 2 - Scott Baldridge, Adam M. Lowrance

, Ben McCarty:
The 2-Factor Polynomial Detects Even Perfect Matchings. 2 - Xiwang Cao, Bocong Chen, San Ling

:
Perfect State Transfer on Cayley Graphs over Dihedral Groups: The Non-Normal Case. 2 - Jennifer Morse, Jianping Pan

, Wencin Poh, Anne Schilling
:
A Crystal on Decreasing Factorizations in the 0-Hecke Monoid. 2 - Xin Luo, Dong Zhang:

Spectrum of Signless 1-Laplacian on Simplicial Complexes. 2 - Ryan R. Martin

, Heather C. Smith, Shanise Walker
:
Improved Bounds for Induced Poset Saturation. 2 - Jozefien D'haeseleer, Nicola Durante:

On Absolute Points of Correlations of PG(2, qn). 2 - Xizhi Liu:

Structural Results for Conditionally Intersecting Families and some Applications. 2 - Wouter Cames van Batenburg

, Rémi de Joannis de Verclos, Ross J. Kang, François Pirot
:
Bipartite Induced Density in Triangle-Free Graphs. 2 - Rutger Campbell, Kevin Grace, James G. Oxley, Geoff Whittle:

On Density-Critical Matroids. 2 - Mathieu Dutour Sikiric

, Alexey Garber
:
Periodic Triangulations of ℤn. 2 - Karen Gunderson:

Minimum Degree Conditions for Small Percolating Sets in Bootstrap Percolation. 2 - Jonathan Cutler, Nicholas Kass:

Homomorphisms into Loop-Threshold Graphs. 2 - Dániel Gerbner:

On Berge-Ramsey Problems. 2 - Stefan Felsner, Winfried Hochstättler, Kolja Knauer, Raphael Steiner

:
Complete Acyclic Colorings. 2 - Margherita Barile, Antonio Macchia

:
Minimal Cellular Resolutions of the Edge Ideals of Forests. 2 - Michael C. Strayer:

Unified Characterizations of Minuscule Kac-Moody Representations Built from Colored Posets. 2 - Natalie Aisbett, Vadim Volodin:

Geometric Realization of γ-Vectors of Subdivided Cross Polytopes. 2 - Ayomikun Adeniran, Steve Butler, Galen Dorpalen-Barry, Pamela E. Harris

, Cyrus Hettle, Qingzhong Liang, Jeremy L. Martin, Hayan Nam:
Enumerating Parking Completions Using Join and Split. 2 - Colin Desmarais

, Cecilia Holmgren:
Normal Limit Laws for Vertex Degrees in Randomly Grown Hooking Networks and Bipolar Networks. 2 - Colin Defant:

Polyurethane Toggles. 2 - Raúl M. Falcón

, Rebecca J. Stones:
Enumerating Partial Latin Rectangles. 2 - Westin King, Catherine H. Yan

:
Parking Functions on Directed Graphs and Some Directed Trees. 2 - Katie Clinch

, Derek Kitson
:
Constructing Isostatic Frameworks for the ℓ1 and ℓ∞ Plane. 2 - Tommy Wuxing Cai, Naihuan Jing

:
Deformation of Cayley's Hyperdeterminants. 2 - Georg Loho

:
Abstract Tropical Linear Programming. 2 - Fuhong Ma, Douglas B. West, Jin Yan:

Lichiardopol's Conjecture on Disjoint Cycles in Tournaments. 2 - Sylvie Corteel, Arthur Nunge:

Combinatorics of the 2-Species Exclusion Processes, Marked Laguerre Histories, and Partially Signed Permutations. 2 - Joel Brewster Lewis:

A Note on the Hurwitz Action on Reflection Factorizations of Coxeter Elements in Complex Reflection Groups. 2 - David G. L. Wang

, Jerry J. R. Zhang:
A Toeplitz Property of Ballot Permutations and Odd Order Permutations. 2 - Greg Malen

, Erika Berenice Roldan-Roa:
Extremal Topological and Geometric Problems for Polyominoes. 2 - Imre Leader, Paul A. Russell:

Inhomogeneous Partition Regularity. 2 - Dylan Pentland:

Coefficients of Gaussian Polynomials Modulo N. 2
Volume 27, Number 3, 2020
- Vincent E. Coll Jr., Andrew W. Mayers, Nicholas W. Mayers

:
Statistics on Partitions Arising from Seaweed Algebras. 3 - Xuding Zhu:

A Note on the Poljak-Rödl Function. 3 - Rajko Nenadov

, Mehtab Sawhney, Benny Sudakov, Adam Zsolt Wagner:
Bounded Degree Spanners of the Hypercube. 3 - Jérémie Bettinelli:

Slit-Slide-Sew Bijections for Bipartite and Quasibipartite Plane Maps. 3 - Nathan J. Bowler, Johannes Carmesin, Jerzy Wojciechowski, Shadisadat Ghaderi:

The Almost Intersection Property for Pairs of Matroids on Common Groundset. 3 - Clément Charpentier, Reza Naserasr, Éric Sopena:

Homomorphisms of Sparse Signed Graphs. 3 - Thomas Britz

, Nicholas J. Cavenagh, Adam Mammoliti, Ian M. Wanless:
Mutually Orthogonal Binary Frequency Squares. 3 - Takashi Komatsu, Norio Konno, Iwao Sato:

Zeta Functions with Respect to General Coined Quantum Walk of Periodic Graphs. 3 - Zoltán Füredi, Alexandr V. Kostochka, Ruth Luo

:
Berge Cycles in Non-Uniform Hypergraphs. 3 - Michele Torielli

, Shuhei Tsujie
:
Freeness of Hyperplane Arrangements between Boolean Arrangements and Weyl Arrangements of Type $ B_{\ell} $. 3 - George Drummond

, Tara Fife, Kevin Grace, James G. Oxley:
Circuit-Difference Matroids. 3 - Srinivasan Arunachalam, Péter Vrana

, Jeroen Zuiddam:
The Asymptotic Induced Matching Number of Hypergraphs: Balanced Binary Strings. 3 - Robert F. Bailey, Daniel R. Hawtin

:
On the 486-Vertex Distance-Regular Graphs of Koolen-Riebeek and Soicher. 3 - Lawrence H. Harper, Gene B. Kim, Neal Livesay

:
The Absolute Orders on the Coxeter Groups $A_n$ and $B_n$ are Sperner. 3 - Graham Hawkes:

Crystal Structures for Double Stanley Symmetric Functions. 3 - Sebastian Manecke, Raman Sanyal, Jeonghoon So:

$S$-Hypersimplices, Pulling Triangulations, and Monotone paths. 3 - Steven Klee, Brian Nugent

:
Pure $\mathcal{O}$-Sequences arising from $2$-Dimensional PS Ear-Decomposable Simplicial Complexes. 3 - Jürgen Kritschgau:

Rainbow Matchings of size $m$ in Graphs with Total Color Degree at least $2mn$. 3 - Pu Gao, Remco van der Hofstad

, Angus Southwell, Clara Stegehuis:
Counting Triangles in Power-Law Uniform Random Graphs. 3 - Hiranya Kishore Dey, Sivaramakrishnan Sivasubramanian:

Gamma Positivity of the Descent Based Eulerian Polynomial in Positive Elements of Classical Weyl Groups. 3 - Jozefien D'haeseleer, Geertrui Van de Voorde:

Translation Hyperovals and $\mathbb{F}_2$-Linear Sets of Pseudoregulus Type. 3 - Lei Yu, Xinmin Hou

, Yue Ma
, Boyuan Liu:
Exact Minimum Codegree Thresholds for $K_4^-$-Covering and $K_5^-$-Covering. 3 - Irena Rusu:

Sorting Permutations with Fixed Pinnacle Set. 3 - Rosa C. Orellana

, Mike Zabrocki
:
A Combinatorial Model for the Decomposition of Multivariate Polynomial Rings as $S_n$-Modules. 3 - Péter Csikvári, András Imolay:

Covers, Orientations and Factors. 3 - Katherine Edwards, W. Sean Kennedy:

Delay Colouring in Quartic Graphs. 3 - Shi-Mei Ma, Jun Ma, Jean Yeh

, Yeong-Nan Yeh:
The $1/k$-Eulerian Polynomials of Type $B$. 3 - Louigi Addario-Berry, Borja Balle, Guillem Perarnau:

Diameter and Stationary Distribution of Random $r$-Out Digraphs. 3 - Victor Chepoi, Kolja Knauer, Manon Philibert:

Two-Dimensional Partial Cubes. 3 - Aleksandra Gorzkowska

, Ernest Kargul, Szymon Musial, Katarzyna Pal:
Edge-Distinguishing of Star-Free Graphs. 3 - Yiting Jiang

, Xuding Zhu:
$4$-Colouring of Generalized Signed Planar Graphs. 3 - Giulio Cerbai

, Anders Claesson
, Luca S. Ferrari
, Einar Steingrímsson:
Sorting with Pattern-Avoiding Stacks: The 132-Machine. 3 - Shane Chern

:
Linked Partition Ideals, Directed Graphs and $q$-Multi-Summations. 3 - Eunjeong Lee

:
Grossberg-Karshon Twisted Cubes and Hesitant Jumping Walk Avoidance. 3 - Ilse Fischer

, Matjaz Konvalinka:
A Bijective Proof of the ASM Theorem, Part I: The Operator Formula. 3 - Koji Momihara:

A Recursive Construction for Skew Hadamard Difference Sets. 3 - James Haglund, Andrew Timothy Wilson

:
Macdonald Polynomials and Chromatic Quasisymmetric Functions. 3 - Ji Hoon Chun

:
On Local Packings of the Cross-Polytope. 3 - Dennis Clemens

, Julia Ehrenmüller, Yury Person
:
A Dirac-type Theorem for Berge Cycles in Random Hypergraphs. 3 - Giulia Codenotti, Jonathan Spreer

, Francisco Santos
:
Average Betti Numbers of Induced Subcomplexes in Triangulations of Manifolds. 3 - Bryan R. Gillespie

:
Convexity in Ordered Matroids and the Generalized External Order. 3 - Eric Rowland, Manon Stipulanti

:
Avoiding 5/4-Powers on the Alphabet of Nonnegative Integers. 3 - Matthieu Rosenfeld

:
Another Approach to Non-Repetitive Colorings of Graphs of Bounded Degree. 3 - Igor Pak, Fedor Petrov:

Hidden Symmetries of Weighted Lozenge Tilings. 3 - Marilena Barnabei, Flavio Bonetti, Niccolò Castronuovo

, Matteo Silimbani:
Permutations Avoiding a Simsun Pattern. 3 - Jared Culbertson, Anton Dochtermann, Dan P. Guralnik, Peter F. Stiller:

Extendable Shellability for $d$-Dimensional Complexes on $d+3$ Vertices. 3 - Xinmin Hou

, Boyuan Liu, Yue Ma
:
Codegree Threshold for Tiling Balanced Complete $3$-Partite $3$-Graphs and Generalized $4$-Cycles. 3 - Joseph Hyde, Andrew Treglown:

A Degree Sequence Version of the Kühn-Osthus Tiling Theorem. 3 - Joseph Briggs

, Christopher Cox
:
Restricted Online Ramsey Numbers of Matchings and Trees. 3 - Florian Kohl, McCabe Olsen:

Level Algebras and $\mathbf {s}$-Lecture Hall Polytopes. 3 - Colin Defant, James Propp:

Quantifying Noninvertibility in Discrete Dynamical Systems. 3 - Anthony B. Evans, Gage N. Martin, Kaethe Minden, M. A. Ollis:

Infinite Latin Squares: Neighbor Balance and Orthogonality. 3 - Xiaodong Xu, Meilian Liang, Stanislaw P. Radziszowski:

Chromatic Vertex Folkman Numbers. 3 - Alexander Borisov:

Frameworks for Two-Dimensional Keller Maps. 3 - Yi Wang, Bo-Jun Yuan:

On Graphs whose Orientations are Determined by their Hermitian Spectra. 3 - Richard Stong, Skip Garibaldi

:
Optimal Play for Multiple Lottery Wins. 3 - Dennis Clemens

, Pranshu Gupta
, Fabian Hamann
, Alexander Haupt
, Mirjana Mikalacki
, Yannick Mogge
:
Fast Strategies in Waiter-Client Games. 3 - Xiaoyu He

, Ray Li
:
Hat Guessing Numbers of Degenerate Graphs. 3 - Narges Ghareghani, Morteza Mohammad Noori, Pouyeh Sharifani:

Some Properties of the $k$-bonacci Words on Infinite Alphabet. 3 - Daniel Condon:

Lozenge Tiling Function Ratios for Hexagons with Dents on Two Sides. 3 - Jan Hazla:

On Arithmetic Progressions in Symmetric Sets in Finite Field Model. 3 - Nobutaka Shimizu

:
The Average Distance and the Diameter of Dense Random Regular Graphs. 3
Volume 27, Number 4, 2020
- Andrew Krieger, Georg Menz, Martin Tassy:

Deducing a Variational Principle with Minimal A Priori Assumptions. 4 - Ilkyoo Choi, Ringi Kim, Boram Park:

Maximum $k$-Sum $\mathbf{n}$-Free Sets of the 2-Dimensional Integer Lattice. 4 - Ali Mohammadi

:
On Growth of the Set A(A+1) in Arbitrary Finite Fields. 4 - Matt Bowen, Ander Lamaison

, Alp Müyesser:
Finding Unavoidable Colorful Patterns in Multicolored Graphs. 4 - Emmanuella Sandratra Rambeloson, John Shareshian:

A Counterexample to a Conjecture on Schur Positivity of Chromatic Symmetric Functions of trees. 4 - Andrew Elvey Price, Alan D. Sokal:

Phylogenetic Trees, Augmented Perfect Matchings, and a Thron-type Continued Fraction (T-fraction) for the Ward Polynomials. 4 - Kyungyong Lee, George D. Nasr

, Jamie Radcliffe:
A Combinatorial Formula for Kazhdan-Lusztig Polynomials of $\rho$-Removed Uniform Matroids. 4 - Saieed Akbari, Trent G. Marbach

, Rebecca J. Stones, Zhuanhao Wu:
Balanced Equi-$n$-Squares. 4 - Zdenek Dvorák

, Jean-Sébastien Sereni:
On Fractional Fragility Rates of Graph Classes. 4 - Mohamed Slim Kammoun

:
On the Longest Common Subsequence of Conjugation Invariant Random Permutations. 4 - Tony Johansson:

The Cover Time of a Biased Random Walk on a Random Regular Graph of Odd Degree. 4 - Chaya Keller

, Yael Stein:
Blockers for Triangulations of a Convex Polygon and a Geometric Maker-Breaker Game. 4 - Raphael Yuster:

Covering Small Subgraphs of (Hyper)Tournaments with Spanning Acyclic Subgraphs. 4 - Erica L. L. Liu, Jian Wang:

The Maximum Number of Cliques in Hypergraphs without Large Matchings. 4 - Hajime Tanaka, Tao Wang:

The Terwilliger Algebra of the Twisted Grassmann Graph: the Thin Case. 4 - Brendon Rhoades, Tianyi Yu, Zehong Zhao:

Harmonic Bases for Generalized Coinvariant Algebras. 4 - Jaroslav Nesetril, Patrice Ossona de Mendez, Michal Pilipczuk, Xuding Zhu:

Clustering Powers of Sparse Graphs. 4 - Jie Ma, Tianyun Tang, Xingxing Yu:

Monochromatic Subgraphs in Iterated Triangulations. 4 - Stijn Cambie

, Bogdan Chornomaz, Zeev Dvir, Yuval Filmus, Shay Moran:
A Sauer-Shelah-Perles Lemma for Lattices. 4 - Alin Bostan, Andrew Elvey Price, Anthony John Guttmann, Jean-Marie Maillard:

Stieltjes Moment Sequences for Pattern-Avoiding Permutations. 4 - Jihyeug Jang, Jang Soo Kim:

Volumes of Flow Polytopes Related to Caracol Graphs. 4 - Sebastian M. Cioaba

, Lihua Feng, Michael Tait, Xiao-Dong Zhang:
The Maximum Spectral Radius of Graphs Without Friendship Subgraphs. 4 - Deepak Bal

, Patrick Bennett
:
The Bipartite $K_{2, 2}$-Free Process and Bipartite Ramsey Number $b(2, t)$. 4 - Jesse Geneson

, Shen-Fu Tsai
:
Sharper Bounds and Structural Results for Minimally Nonlinear 0-1 Matrices. 4 - Molly Baird, Sara C. Billey, Erik D. Demaine, Martin L. Demaine, David Eppstein, Sándor P. Fekete, Graham Gordon, Sean Griffin

, Joseph S. B. Mitchell, Joshua P. Swanson:
Existence and Hardness of Conveyor Belts. 4 - Christoph Goldner:

Generalizing Tropical Kontsevich's Formula to Multiple Cross-Ratios. 4 - Jia Huang:

Nonassociativity of the Norton Algebras of Some Distance Regular Graphs. 4 - Bartlomiej Bosek

, Jaroslaw Grytczuk
, William T. Trotter:
Local Dimension is Unbounded for Planar Posets. 4 - Pieter Kleer

, Viresh Patel, Fabian Stroh:
Switch-Based Markov Chains for Sampling Hamiltonian Cycles in Dense Graphs. 4 - Alan M. Frieze, Xavier Pérez-Giménez, Pawel Pralat

:
On the Existence of Hamilton Cycles with a Periodic Pattern in a Random Digraph. 4 - Anna Kompisová, Robert Lukot'ka:

Short Cycle Covers of Graphs with at Most 77% Vertices of Degree Two. 4 - J. Robert Johnson, Trevor Pinto:

The $Q_2$-Free Process in the Hypercube. 4 - Stefko Miklavic, Primoz Sparl:

On Minimal Distance-Regular Cayley Graphs of Generalized Dihedral Groups. 4 - Michal Przykucki, Thomas Shelton:

Smallest Percolating Sets in Bootstrap Percolation on Grids. 4 - Yi-Zheng Fan, Yi Wang, Jiang-Chao Wan:

Minimal Non-Odd-Transversal Hypergraphs and Minimal Non-Odd-Bipartite Hypergraphs. 4 - Andrzej Rucinski

, Andrzej Zak
:
On the Minimum Size of Hamilton Saturated Hypergraphs. 4 - C. Matthew Farmer, Joshua Hallam, Clifford D. Smyth

:
The Noncrossing Bond Poset of a Graph. 4 - Hong-Bin Chen, Yen-Jen Cheng, Wei-Tian Li

, Chia-An Liu:
The Boolean Rainbow Ramsey Number of Antichains, Boolean Posets and Chains. 4 - Carlos Segovia

, Monika Winklmeier
:
Calculating the Dimension of the Universal Embedding of the Symplectic Dual Polar Space using Languages. 4 - Zhilin Zhang, Pingzhi Yuan, Shenglin Zhou:

Flag-Transitive Point-Primitive Symmetric $(v, k, \lambda)$ Designs with Large $k$. 4 - Kristin DeSplinter, Satyan L. Devadoss, Jordan Readyhough, Bryce Wimberly:

Unfolding Cubes: Nets, Packings, Partitions, Chords. 4 - Lucas Mol, Narad Rampersad, Jeffrey O. Shallit:

Extremal Overlap-Free and Extremal $\beta$-Free Binary Words. 4 - Vojtech Dvorák:

Pn-Induced-Saturated Graphs Exist for all $n \geqslant 6$. 4 - Miklós Bóna

, Elijah DeJonge:
Pattern Avoiding Permutations with a Unique Longest Increasing Subsequence. 4 - Lele Liu, Changxiang He, Liying Kang:

Saturation Number of Berge Stars in Random Hypergraphs. 4 - Marthe Bonamy, Oscar Defrain

, Meike Hatzel
, Jocelyn Thiebaut
:
Avoidable Paths in Graphs. 4 - Pawel Wocjan, Clive Elphick, Parisa Darbari:

Spectral Lower Bounds for the Quantum Chromatic Number of a Graph - Part II. 4 - Samuel J. Dittmer, Igor Pak:

Counting Linear Extensions of Restricted Posets. 4 - Stefan Ehard, Elena Mohr, Dieter Rautenbach:

Low Weight Perfect Matchings. 4 - Nantel Bergeron, Aram Dermenjian

, John M. Machacek
:
Sign Variation and Descents. 4 - Zdenek Dvorák

, Carl Feghali:
An Update on Reconfiguring $10$-Colorings of Planar Graphs. 4 - Ivan Aidun, Ralph Morrison:

On the Gonality of Cartesian Products of Graphs. 4 - Wei Jin, Ci Xuan Wu

, Jin-Xin Zhou
:
Two-Distance-Primitive Graphs. 4 - Mario Huicochea:

Beck's Theorem for Plane Curves. 4 - Wei Wang, Lihong Qiu, Jianguo Qian, Wei Wang:

Generalized Spectral Characterization of Mixed Graphs. 4 - Takayuki Negishi, Yuki Sugiyama, Tatsuru Takakura:

On Volume Functions of Special Flow Polytopes Associated to the Root System of Type $A$. 4 - Rosalind A. Cameron, David A. Pike:

Decomposable Twofold Triple Systems with Non-Hamiltonian 2-Block Intersection Graphs. 4

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