
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. P1.1 - Samantha Dahlberg, Adrian She, Stephanie van Willigenburg:
Schur and e-Positivity of Trees and Cut Vertices. P1.2 - Guoce Xin, Yueming Zhong:
On Parity Unimodality of q-Catalan Polynomials. P1.3 - Aadyot Bhatnagar:
Voting Rules that are Unbiased but not Transitive-Symmetric. P1.4 - Michael Drmota, Lander Ramos, Clément Requilé, Juanjo Rué:
Maximal Independent Sets and Maximal Matchings in Series-Parallel and Related Graph Classes. P1.5 - John Bamberg, Stephen P. Glasby, Scott Harper, Cheryl E. Praeger:
Permutations with Orders Coprime to a Given Integer. P1.6 - David Marchant:
2413-Balloon Permutations and the Growth of the Möbius Function. P1.7 - François Pirot, Jean-Sébastien Sereni, Riste Skrekovski:
Variations on the Petersen Colouring Conjecture. P1.8 - Aenne Benjes:
Incompatible Double Posets and Double Order Polytopes. P1.9 - Hailun Zheng:
Ear Decomposition and Balanced Neighborly Simplicial Manifolds. P1.10 - Robert Mcalmon, Suho Oh:
The Rank Function of a Positroid and Non-Crossing Partitions. P1.11 - Thao Do:
The Largest Complete Bipartite Subgraph in Point-Hyperplane Incidence Graphs. P1.12 - Patrick Bennett:
The Sum-Free Process. P1.13 - Cesar Ceballos, Arnau Padrol, Camilo Sarmiento:
The ν-Tamari Lattice via ν-Trees, ν-Bracket Vectors, and Subword Complexes. P1.14 - Yanjun Li, Jácint Szabó:
An Edmonds-Gallai-Type Decomposition for the j-Restricted k-Matching Problem. P1.15 - Martin Balko, Josef Cibulka, Karel Král, Jan Kyncl:
Ramsey Numbers of Ordered Graphs. P1.16 - Tom Braden, Artem Vysogorets:
Kazhdan-Lusztig Polynomials of Matroids Under Deletion. P1.17 - Jimeng Xiao, Casey Tompkins:
On Forbidden Poset Problems in the Linear Lattice. P1.18 - Giampiero Chiaselotti, Tommaso Gentile, Federico Infusino:
Lattice Representations with Set Partitions Induced by Pairings. P1.19 - Ilkyoo Choi, Jinha Kim, Boram Park:
Collapsibility of Non-Cover Complexes of Graphs. P1.20 - Stefaan De Winter, Klaus Metsch:
Perfect 2-Colorings of the Grassmann Graph of Planes. P1.21 - Nishad Kothari, Marcelo Henriques de Carvalho, Claudio L. Lucchesi, Charles H. C. Little:
On Essentially 4-Edge-Connected Cubic Bricks. P1.22 - Ferenc Szöllösi, Patric R. J. Östergård:
Constructions of Maximum Few-Distance Sets in Euclidean Spaces. P1.23 - Cédric Pilatte:
On the Sets of n Points Forming n+1 Directions. P1.24 - Robert Brijder, Lorenzo Traldi:
A Characterization of Circle Graphs in Terms of Multimatroid Representations. P1.25 - Mikhail Isaev, Tejas Iyer, Brendan D. McKay:
Asymptotic Enumeration of Orientations of a Graph as a Function of the Out-Degree Sequence. P1.26 - Xin Fang, Ghislain Fourier, Christoph Pegel:
The Minkowski Property and Reflexivity of Marked Poset Polytopes. P1.27 - Michael Cuntz, Paul Mücksch:
MAT-free Reflection Arrangements. P1.28 - Ebrahim Ghorbani, Sara Kamali, Gholamreza B. Khosrovshahi, Denis S. Krotov:
On the Volumes and Affine Types of Trades. P1.29 - Yahav Alon, Michael Krivelevich:
Random Graph's Hamiltonicity is Strongly Tied to its Minimum Degree. P1.30 - Ryan R. Martin, Abhishek Methuku, Andrew J. Uzzell, Shanise Walker:
A Simple Proof for a Forbidden Subposet Problem. P1.31 - Xiaoyu He, Yuval Wigderson:
Multicolor Ramsey Numbers via Pseudorandom Graphs. P1.32 - 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. P1.33 - Jean-Christophe Aval, Théo Karaboghossian, Adrian Tanasa:
The Hopf Monoid of Hypergraphs and its Sub-Monoids: Basic Invariant and Reciprocity Theorem. P1.34 - Francesco Pavese:
On q-Covering Designs. P1.35 - Johan Håstad, Guillaume Lagarde, Joseph Swernofsky:
d-Galvin Families. P1.36 - Nicola Pace, Angelo Sonnino:
One-Factorisations of Complete Graphs Constructed in Desarguesian Planes of Certain Odd Square Orders. P1.37 - Samuel Braunfeld, Pierre Simon:
The Classification of Homogeneous Finite-Dimensional Permutation Structures. P1.38 - Markus Fulmek:
A Statistics-Respecting Bijection Between Permutation Matrices and Descending Plane Partitions Without Special Parts. P1.39 - Asaf Ferber, Lior Hirschfeld:
Co-degrees Resilience for Perfect Matchings in Random Hypergraphs. P1.40 - Ron Aharoni, Eli Berger, Maria Chudnovsky, Frédéric Havet, Zilin Jiang:
Cooperative Colorings of Trees and of Bipartite Graphs. P1.41 - Neil I. Gillespie, Daniel R. Hawtin, Cheryl E. Praeger:
2-Neighbour-Transitive Codes with Small Blocks of Imprimitivity. P1.42 - On-Hei Solomon Lo, Jens M. Schmidt, Nico Van Cleemput, Carol T. Zamfirescu:
Shortness Coefficient of Cyclically 4-Edge-Connected Cubic Graphs. P1.43 - Robert A. Krueger:
Generalized Ramsey Numbers: Forbidding Paths with Few Colors. P1.44 - Denis S. Krotov, Konstantin V. Vorob'ev:
On Unbalanced Boolean Functions with Best Correlation Immunity. P1.45 - Arthur Hoffmann-Ostenhof:
The Nash-Williams Conjecture and the Dominating Cycle Conjecture. P1.46 - Seunghyun Seo, Ae Ja Yee:
Index of Seaweed Algebras and Integer Partitions. P1.47 - Jaroslaw Grytczuk, Hubert Kordulewski, Artur Niewiadomski:
Extremal Square-Free Words. P1.48 - Rikke Langhede, Carsten Thomassen:
Group Connectivity and Group Coloring: Small Groups versus Large Groups. P1.49 - Mitchel T. Keller, Stephen J. Young:
Hereditary Semiorders and Enumeration of Semiorders by Dimension. P1.50 - Aram Bingham, Özlem Ugurlu:
Sects and Lattice Paths over the Lagrangian Grassmannian. P1.51 - F. Michel Dekking, Jeffrey O. Shallit, Neil J. A. Sloane:
Queens in Exile: Non-attacking Queens on Infinite Chess Boards. P1.52 - János Komlós, Emily Sergel, Gábor E. Tusnády:
The Asymptotic Normality of (s, s+1)-Cores with Distinct Parts. P1.53 - Barnabás Janzer:
Projections of Antichains. P1.54 - Fuliang Lu, Xing Feng, Yan Wang:
b-Invariant Edges in Essentially 4-Edge-Connected Near-Bipartite Cubic Bricks. P1.55 - 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. P1.56 - Mehdi Makhul, Oliver Roche-Newton, Audie Warren, Frank de Zeeuw:
Constructions for the Elekes-Szabó and Elekes-Rónyai Problems. P1.57 - András Pongrácz:
Discordant Voting Protocols for Cyclically Linked Agents. P1.58 - Jeff Kahn, Jinyoung Park:
Stability for Maximal Independent Sets. P1.59 - József Balogh, Felix Christian Clemen, Jozef Skokan, Adam Zsolt Wagner:
The Ramsey Number of Fano Plane Versus Tight Path. P1.60 - Tri Lai:
Lozenge Tilings of Hexagons with Central Holes and Dents. P1.61 - Mustafa Gezek, Rudi Mathon, Vladimir D. Tonchev:
Maximal Arcs, Codes, and New Links Between Projective Planes of Order 16. P1.62 - Jørgen Bang-Jensen, Thomas Bellitto, Thomas Schweser, Michael Stiebitz:
Hajós and Ore Constructions for Digraphs. P1.63 - Jeffrey Matayoshi:
Well-Graded Families and the Union-Closed Sets Conjecture. P1.64 - Jürgen Herzog, Fahimeh Khosh-Ahang, Somayeh Moradi, Masoomeh Rahimbeigi:
Sortable Simplicial Complexes and t-Independence Ideals of Proper Interval Graphs. P1.65 - Luis Fredes, Avelio Sepúlveda:
Tree-Decorated Planar Maps. P1.66 - Matas Sileikis, Lutz Warnke:
Upper Tail Bounds for Stars. P1.67
Volume 27, Number 2, 2020
- Jyotirmoy Ganguly, Amritanshu Prasad, Steven Spallone:
On the Divisibility of Character Values of the Symmetric Group. P2.1 - Radek Husek, Robert Sámal:
Homomorphisms of Cayley graphs and Cycle Double Covers. P2.2 - Frédéric Chyzak, Karen A. Yeats:
Bijections between Łukasiewicz Walks and Generalized Tandem Walks. P2.3 - Sergey Norin, Bruce A. Reed, Andrew Thomason, David R. Wood:
A Lower Bound on the Average Degree Forcing a Minor. P2.4 - Matteo Gallet, Georg Grasegger, Josef Schicho:
Counting Realizations of Laman Graphs on the Sphere. P2.5 - Jonathan Bloom, Sergi Elizalde, Yuval Roichman:
On Cyclic Schur-Positive Sets of Permutations. P2.6 - Colin Defant, Noah Kravitz, Ashwin Sah:
Supertrees. P2.7 - Shimon Garti, Menachem Magidor, Saharon Shelah:
Infinite Monochromatic Paths and a Theorem of Erdős-Hajnal-Rado. P2.8 - Yongli Zhang, Shenglin Zhou:
Flag-Transitive Non-Symmetric 2-Designs with (r, λ)=1 and Exceptional Groups of Lie Type. P2.9 - Jean-Luc Baril, David I. Bevan, Sergey Kirgizov:
Bijections between Directed Animals, Multisets and Grand-Dyck Paths. P2.10 - Primoz Skraba, Gugan Thoppe, D. Yogeshwaran:
Randomly Weighted d-Complexes: Minimal Spanning Acycles and Persistence Diagrams. P2.11 - József Balogh, Béla Csaba, Yifan Jing, András Pluhár:
On the Discrepancies of Graphs. P2.12 - Philippe Di Francesco, Emmanuel Guitter:
Twenty-Vertex Model with Domain Wall Boundaries and Domino Tilings. P2.13 - Vladislav V. Kabanov, Elena V. Konstantinova, Leonid Shalaginov, Alexandr Valyuzhenich:
Minimum Supports of Eigenfunctions with the Second Largest Eigenvalue of the Star Graph. P2.14 - Shalom Eliahou:
A Graph-Theoretic Approach to Wilf's Conjecture. P2.15 - Beka Ergemlidze, Ervin Györi, Abhishek Methuku:
3-Uniform Hypergraphs without a Cycle of Length Five. P2.16 - Konrad J. Swanepoel:
Favourite Distances in 3-Space. P2.17 - Peter Frankl:
Erdős-Ko-Rado Theorem for a Restricted Universe. P2.18 - Kasra Alishahi, Mohaddeseh Rajaee, Ali Rajaei:
Quantum Discrepancy: A Non-Commutative Version of Combinatorial Discrepancy. P2.19 - Mathilde Bouvel, Marni Mishna, Cyril Nicaud:
Some Families of Trees Arising in Permutation Analysis. P2.20 - Gonçalo Gutierres, Ricardo Mamede, José Luis Esteves dos Santos:
Commutation Classes of the Reduced Words for the Longest Element of Sn. P2.21 - Byung-Hak Hwang, Jang Soo Kim, Jaeseong Oh, Sang-Hoon Yu:
On Linearization Coefficients of q-Laguerre Polynomials. P2.22 - Paul Zinn-Justin:
Honeycombs for Hall Polynomials. P2.23 - Frank Röttger:
Asymptotics of a Locally Dependent Statistic on Finite Reflection Groups. P2.24 - James Davies, Carsten Thomassen:
Locally Hamiltonian Graphs and Minimal Size of Maximal Graphs on a Surface. P2.25 - Vojtech Dvorak:
A Note on Norine's Antipodal-Colouring Conjecture. P2.26 - Scott Baldridge, Adam M. Lowrance, Ben McCarty:
The 2-Factor Polynomial Detects Even Perfect Matchings. P2.27 - Xiwang Cao, Bocong Chen, San Ling:
Perfect State Transfer on Cayley Graphs over Dihedral Groups: The Non-Normal Case. P2.28 - Jennifer Morse, Jianping Pan, Wencin Poh, Anne Schilling:
A Crystal on Decreasing Factorizations in the 0-Hecke Monoid. P2.29 - Xin Luo, Dong Zhang:
Spectrum of Signless 1-Laplacian on Simplicial Complexes. P2.30 - Ryan R. Martin, Heather C. Smith, Shanise Walker:
Improved Bounds for Induced Poset Saturation. P2.31 - Jozefien D'haeseleer, Nicola Durante:
On Absolute Points of Correlations of PG(2, qn). P2.32 - Xizhi Liu:
Structural Results for Conditionally Intersecting Families and some Applications. P2.33 - Wouter Cames van Batenburg, Rémi de Joannis de Verclos, Ross J. Kang, François Pirot:
Bipartite Induced Density in Triangle-Free Graphs. P2.34 - Rutger Campbell, Kevin Grace, James G. Oxley, Geoff Whittle:
On Density-Critical Matroids. P2.35 - Mathieu Dutour Sikiric, Alexey Garber:
Periodic Triangulations of ℤn. P2.36 - Karen Gunderson:
Minimum Degree Conditions for Small Percolating Sets in Bootstrap Percolation. P2.37 - Jonathan Cutler, Nicholas Kass:
Homomorphisms into Loop-Threshold Graphs. P2.38 - Dániel Gerbner:
On Berge-Ramsey Problems. P2.39 - Stefan Felsner, Winfried Hochstättler, Kolja Knauer, Raphael Steiner:
Complete Acyclic Colorings. P2.40 - Margherita Barile, Antonio Macchia:
Minimal Cellular Resolutions of the Edge Ideals of Forests. P2.41 - Michael C. Strayer:
Unified Characterizations of Minuscule Kac-Moody Representations Built from Colored Posets. P2.42 - Natalie Aisbett, Vadim Volodin:
Geometric Realization of γ-Vectors of Subdivided Cross Polytopes. P2.43 - 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. P2.44 - Colin Desmarais, Cecilia Holmgren:
Normal Limit Laws for Vertex Degrees in Randomly Grown Hooking Networks and Bipolar Networks. P2.45 - Colin Defant:
Polyurethane Toggles. P2.46 - Raúl M. Falcón, Rebecca J. Stones:
Enumerating Partial Latin Rectangles. P2.47 - Westin King, Catherine H. Yan:
Parking Functions on Directed Graphs and Some Directed Trees. P2.48 - Katie Clinch, Derek Kitson:
Constructing Isostatic Frameworks for the ℓ1 and ℓ∞ Plane. P2.49 - Tommy Wuxing Cai, Naihuan Jing:
Deformation of Cayley's Hyperdeterminants. P2.50 - Georg Loho:
Abstract Tropical Linear Programming. P2.51 - Fuhong Ma, Douglas B. West, Jin Yan:
Lichiardopol's Conjecture on Disjoint Cycles in Tournaments. P2.52 - Sylvie Corteel, Arthur Nunge:
Combinatorics of the 2-Species Exclusion Processes, Marked Laguerre Histories, and Partially Signed Permutations. P2.53 - Joel Brewster Lewis:
A Note on the Hurwitz Action on Reflection Factorizations of Coxeter Elements in Complex Reflection Groups. P2.54 - David G. L. Wang, Jerry J. R. Zhang:
A Toeplitz Property of Ballot Permutations and Odd Order Permutations. P2.55 - Greg Malen, Erika Berenice Roldan-Roa:
Extremal Topological and Geometric Problems for Polyominoes. P2.56 - Imre Leader, Paul A. Russell:
Inhomogeneous Partition Regularity. P2.57 - Dylan Pentland:
Coefficients of Gaussian Polynomials Modulo N. P2.58
Volume 27, Number 3, 2020
- Vincent E. Coll Jr., Andrew W. Mayers, Nicholas W. Mayers:
Statistics on Partitions Arising from Seaweed Algebras. P3.1 - Xuding Zhu:
A Note on the Poljak-Rödl Function. P3.2 - Rajko Nenadov, Mehtab Sawhney, Benny Sudakov, Adam Zsolt Wagner:
Bounded Degree Spanners of the Hypercube. P3.3 - Jérémie Bettinelli:
Slit-Slide-Sew Bijections for Bipartite and Quasibipartite Plane Maps. P3.4 - Nathan J. Bowler, Johannes Carmesin, Jerzy Wojciechowski, Shadisadat Ghaderi:
The Almost Intersection Property for Pairs of Matroids on Common Groundset. P3.5 - Clément Charpentier, Reza Naserasr, Éric Sopena:
Homomorphisms of Sparse Signed Graphs. P3.6 - Thomas Britz, Nicholas J. Cavenagh, Adam Mammoliti, Ian M. Wanless:
Mutually Orthogonal Binary Frequency Squares. P3.7 - Takashi Komatsu, Norio Konno, Iwao Sato:
Zeta Functions with Respect to General Coined Quantum Walk of Periodic Graphs. P3.8 - Zoltán Füredi, Alexandr V. Kostochka, Ruth Luo:
Berge Cycles in Non-Uniform Hypergraphs. P3.9 - Michele Torielli, Shuhei Tsujie:
Freeness of Hyperplane Arrangements between Boolean Arrangements and Weyl Arrangements of Type $ B_{\ell} $. P3.10 - George Drummond, Tara Fife, Kevin Grace, James G. Oxley:
Circuit-Difference Matroids. P3.11 - Srinivasan Arunachalam, Péter Vrana, Jeroen Zuiddam:
The Asymptotic Induced Matching Number of Hypergraphs: Balanced Binary Strings. P3.12 - Robert F. Bailey, Daniel R. Hawtin:
On the 486-Vertex Distance-Regular Graphs of Koolen-Riebeek and Soicher. P3.13