Volume 33, Issue 1 ( 2026)

Ramsey Numbers Through the Lenses of Polynomial Ideals and Nullstellensätze

Jesús A. De Loera, William J. Wesley

P1.1
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Eigenspace Embeddings of Imprimitive Association Schemes

Janoš Vidali

P1.2
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Combinatorial Enumeration of Lattice Paths by Flaws with Respect to a Linear Boundary of Rational Slope

Federico Firoozi, Jonathan Jedwab, Amarpreet Rattan

P1.3
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A Note on the Minimum Size of Turán Systems

Xizhi Liu, Oleg Pikhurko

P1.4
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Thron-Type Continued Fractions (T-Fractions) for Some Classes of Increasing Trees

Veronica Bitonti, Bishal Deb, Alan D. Sokal

P1.5
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Monochromatic Partitions in 2-Edge-Coloured Bipartite Graphs

Camila Fernández, Matías Pavez-Signé, Maya Stein

P1.6
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Treewidth of Generalized Hamming Graph, Bipartite Kneser Graph and Generalized Petersen Graph

Yichen Wang, Mengyu Cao, Zequn Lv, Mei Lu

P1.7
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Examining Kempe Equivalence via Commutative Algebra

Hidefumi Ohsugi, Akiyoshi Tsuchiya

P1.8
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New Bijective Proofs Pertaining to Alternating Sign Matrices

Takuya Inoue

P1.9
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On Cospectral Graphons

Jan Hladký, Daniel Iľkovič, Jared León, Xichao Shu

P1.10
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A Construction that Preserves the Configuration of a Matroid, with Applications to Lattice Path Matroids

Joseph E. Bonin, Anna de Mier

P1.11
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A Local Framework for Proving Combinatorial Matrix Inversion Theorems

Aditya Khanna, Nicholas A. Loehr

P1.12
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Resolving Sets and Split Resolving Sets of Symmetric Designs

Ákos Beke

P1.13
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Fourier Analysis on Distance-Regular Cayley Graphs over Abelian Groups

Xiongfeng Zhan, Xueyi Huang, Lu Lu

P1.14
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Maximum Size $t$-Intersecting Families and Anticodes

Xuan Wang, Tuvi Etzion, Denis S. Krotov, Minjia Shi

P1.15
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On Cube-Free Problems

Yuchen Meng

P1.16
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Defective Coloring of Blowups

Sergey Norin, Raphael Steiner

P1.17
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Sharp Bounds on Lengths of Linear Recolouring Sequences

Stijn Cambie, Wouter Cames van Batenburg, Daniel W. Cranston

P1.18
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On Turán-Type Problems and the Abstract Chromatic Number

Dániel Gerbner, Hilal Hama Karim, Gaurav Kucheriya

P1.19
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Cyclic Ordering of Split Matroids

Kristóf Bérczi, Áron Jánosik, Bence Mátravölgyi

P1.20
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Dirac's Theorem for Graphs of Bounded Bandwidth

Alberto Espuny Díaz, Pranshu Gupta, Domenico Mergoni Cecchelli, Olaf Parczyk, Amedeo Sgueglia

P1.21
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Creating Subgraphs in Semi-Random Hypergraph Games

Natalie Behague, Paweł Prałat, Andrzej Ruciński

P1.22
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