Volume 22, Issue 2 (2015)

A Note on Coloring Vertex-Transitive Graphs

Daniel W. Cranston, Landon Rabern

P2.1
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Equipopularity Classes in the Separable Permutations

Michael Albert, Cheyne Homberger, Jay Pantone

P2.2
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Roudneff's Conjecture for Lawrence Oriented Matroids

Luis Pedro Montejano, Jorge Luis Ramírez-Alfonsín

P2.3
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Young Diagrams and Intersection Numbers for Toric Manifolds associated with Weyl Chambers

Hiraku Abe

P2.4
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Permutations Destroying Arithmetic Structure

Veselin Jungić, Julian Sahasrabudhe

P2.5
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Flag-Transitive Non-Symmetric 2-Designs with $(r,\lambda)=1$ and Alternating Socle

Shenglin Zhou, Yajie Wang

P2.6
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Power Sum Expansion of Chromatic Quasisymmetric Functions

Christos A. Athanasiadis

P2.7
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Motzkin Paths, Motzkin Polynomials and Recurrence Relations

Roy Oste, Joris Van der Jeugt

P2.8
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From Edge-Coloring to Strong Edge-Coloring

Valentin Borozan, Gerard Jennhwa Chang, Nathann Cohen, Shinya Fujita, Narayanan Narayanan, Reza Naserasr, Petru Valicov

P2.9
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A Construction of Small $(q-1)$-Regular Graphs of Girth 8

M. Abreu, G. Araujo-Pardo, C. Balbuena, D. Labbate

P2.10
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A Generalization of Tokuyama's Formula to the Hall-Littlewood Polynomials

Vineet Gupta, Uma Roy, Roger Van Peski

P2.11
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A Generalization of Very Odd Sequences

Cheng Yeaw Ku, Kok Bin Wong

P2.12
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Sprague-Grundy Values of the $\mathcal{R}$-Wythoff Game

Albert Gu

P2.13
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Characterization of $(2m,m)$-Paintable Graphs

Thomas Mahoney, Jixian Meng, Xuding Zhu

P2.14
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Locating-Dominating Sets and Identifying Codes in Graphs of Girth at least 5

Camino Balbuena, Florent Foucaud, Adriana Hansberg

P2.15
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Permutations Generated by a Depth 2 Stack and an Infinite Stack in Series are Algebraic

Murray Elder, Geoffrey Lee, Andrew Rechnitzer

P2.16
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Ehrhart Series of Polytopes Related to Symmetric Doubly-Stochastic Matrices

Robert Davis

P2.17
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On Modular $k$-Free Sets

Victor Lambert

P2.18
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Output Sum of Transducers: Limiting Distribution and Periodic Fluctuation

Clemens Heuberger, Sara Kropf, Helmut Prodinger

P2.19
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Well-Quasi-Order for Permutation Graphs Omitting a Path and a Clique

Aistis Atminas, Robert Brignall, Nicholas Korpelainen, Vadim Lozin, Vincent Vatter

P2.20
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On the Chromatic Number of the Erdős-Rényi Orthogonal Polarity Graph

Xing Peng, Michael Tait, Craig Timmons

P2.21
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Some Combinatorial Arrays Related to the Lotka-Volterra System

David Callan, Shi-Mei Ma, Toufik Mansour

P2.22
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Biembeddings of 2-Rotational Steiner Triple Systems

M. J. Grannell, J. Z. Schroeder

P2.23
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Hyperbinary Expansions and Stern Polynomials

Karl Dilcher, Larry Ericksen

P2.24
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Intersections of Shifted Sets

Mauro Di Nasso

P2.25
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Schubert Calculus and the Homology of the Peterson Variety

Erik Insko

P2.26
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Cooperative Colorings and Independent Systems of Representatives

Ron Aharoni, Ron Holzman, David Howard, Philipp Sprüssel

P2.27
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On Embeddings of Circulant Graphs

Marston Conder, Ricardo Grande

P2.28
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Extensions of Infinite Partition Regular Systems

Neil Hindman, Imre Leader, Dona Strauss

P2.29
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Fan-Extensions in Fragile Matroids

Carolyn Chun, Deborah Chun, Dillon Mayhew, Stefan H. M. Van Zwam

P2.30
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When Does the Set of $(a, b, c)$-Core Partitions Have a Unique Maximal Element?

Amol Aggarwal

P2.31
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Containment Game Played on Random Graphs: Another Zig-Zag Theorem

Paweł Prałat

P2.32
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On a Generalization of Thue Sequences

Jaka Kranjc, Borut Lužar, Martina Mockovčiaková, Roman Soták

P2.33
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Generating the Cycle Space of Planar Graphs

Matthias Hamann

P2.34
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Symmetric Chain Decompositions of Quotients by Wreath Products

Dwight Duffus, Kyle Thayer

P2.35
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The Parametric Frobenius Problem

Bjarke Hammersholt Roune, Kevin Woods

P2.36
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Nonexistence of a Class of Distance-Regular Graphs

Yu-pei Huang, Yeh-jong Pan, Chih-wen Weng

P2.37
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A Generic Method for Bijections between Blossoming Trees and Planar Maps

Marie Albenque, Dominique Poulalhon

P2.38
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Thresholds and Expectation-Thresholds of Monotone Properties with Small Minterms

Ehud Friedgut, Jeff Kahn, Clara Shikhelman

P2.39
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SB-Labelings, Distributivity, and Bruhat Order on Sortable Elements

Henri Mühle

P2.40
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On-line List Colouring of Random Graphs

Alan Frieze, Dieter Mitsche, Xavier Pérez-Giménez, Paweł Prałat

P2.41
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Tokuyama's Identity for Factorial Schur $P$ and $Q$ Functions

Angèle M. Hamel, Ronald C. King

P2.42
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Wreath Product Action on Generalized Boolean Algebras

Ashish Mishra, Murali K. Srinivasan

P2.43
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Combinatorics of Tableau Inversions

Jonathan E. Beagley, Paul Drube

P2.44
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The Complete cd-Index of Boolean Lattices

Neil J.Y. Fan, Liao He

P2.45
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The Degree-Diameter Problem for Sparse Graph Classes

Guillermo Pineda-Villavicencio, David R. Wood

P2.46
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Contractible Edges in 2-Connected Locally Finite Graphs

Tsz Lung Chan

P2.47
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A Note on Statistical Averages for Oscillating Tableaux

Sam Hopkins, Ingrid Zhang

P2.48
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Cross-Intersecting Erdős-Ko-Rado Sets in Finite Classical Polar Spaces

Ferdinand Ihringer

P2.49
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The Minimum Size of Signed Sumsets

Béla Bajnok, Ryan Matzke

P2.50
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On the Number of Matroids Compared to the Number of Sparse Paving Matroids

Rudi Pendavingh, Jorn van der Pol

P2.51
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A Disproof of Tsallis' Bond Percolation Threshold Conjecture for the Kagome Lattice

John C. Wierman, Gaoran Yu, Theodore Huang

P2.52
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Representing Graphs via Pattern Avoiding Words

Miles Jones, Sergey Kitaev, Artem Pyatkin, Jeffrey Remmel

P2.53
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Permutations on the Random Permutation

Julie Linman, Michael Pinsker

P2.54
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Interpreting the Truncated Pentagonal Number Theorem using Partition Pairs

Louis W. Kolitsch, Michael Burnette

P2.55
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Tiling Groups with Difference Sets

Ante Ćustić, Vedran Krčadinac, Yue Zhou

P2.56
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The Toggle Group, Homomesy, and the Razumov-Stroganov Correspondence

Jessica Striker

P2.57
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On Exponential Growth of Degrees

Yuval Roichman

P2.58
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