Volume 32, Issue 2 (2025)

What is a $4$-Connected Matroid?

Nick Brettell, Susan Jowett, James Oxley, Charles Semple, Geoff Whittle

P2.1
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Every Signed Planar Graph of Girth 5 Has Circular Chromatic Number Strictly Less Than 4

Jiaao Li, Xueliang Li, Zhiqian Wang

P2.2
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Fusions of the Tensor Product of a Strongly Regular Graph

Allen Herman, Neha Joshi

P2.3
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Rank Functions and Invariants of Delta-Matroids

Matt Larson

P2.4
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Signed Circuit $6$-Covers of Signed $K_4$-Minor-Free Graphs

You Lu, Rong Luo, Zhengke Miao, Cun-Quan Zhang

P2.5
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A Three-Regime Theorem for Flow-Firing

Sarah Brauner, Galen Dorpalen-Barry, Selvi Kara, Caroline Klivans, Lisa Schneider

P2.6
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Realizability in Matoušek Unique Sink Orientations: Characterization and Complexity Gap

Bernd Gärtner, Simon Weber, Joel Widmer

P2.7
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On the Order of P-Strict Promotion on $V\times [\ell]$

Ben Adenbaum

P2.8
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