Arindam Biswas: On Chromatic Asymptotic Approximate Groups https://arxiv.org/abs/2604.18577 https://arxiv.org/pdf/2604.18577 https://arxiv.org/html/2604.18577

Pablo Sober\'on: An elementary proof of Sierksma's conjecture for seven points in the plane https://arxiv.org/abs/2604.18485 https://arxiv.org/pdf/2604.18485 https://arxiv.org/html/2604.18485

Sam J. Evans: Saturation of Markov Polynomials https://arxiv.org/abs/2604.18333 https://arxiv.org/pdf/2604.18333 https://arxiv.org/html/2604.18333

Damir D. Dzhafarov, Jun le Goh: Finite combinatorics and computability theory https://arxiv.org/abs/2604.18290 https://arxiv.org/pdf/2604.18290 https://arxiv.org/html/2604.18290

Xiamiao Zhao, Xin Cheng, D\'aniel Gerbner: Generalized Tur\'an problems for Berge hypergraphs https://arxiv.org/abs/2604.18217 https://arxiv.org/pdf/2604.18217 https://arxiv.org/html/2604.18217

Ross J. Kang, Cl\'ement Legrand-Duchesne: Dirac's theorem and the switch geometry of perfect matchings https://arxiv.org/abs/2604.17911 https://arxiv.org/pdf/2604.17911 https://arxiv.org/html/2604.17911

Jie Ma, Quanyu Tang, Yuchang Wang, Zhiheng Zheng: On Spielman's Laplacian Eigenratio Conjecture and Related Problems https://arxiv.org/abs/2604.17907 https://arxiv.org/pdf/2604.17907 https://arxiv.org/html/2604.17907

Sebastian Pardo-Guerra, Anil Thapa, Jonathan Washburn: The Cactus Criterion: When Nonlinear Hodge Theory Reduces to Linear on Graphs https://arxiv.org/abs/2604.17775 https://arxiv.org/pdf/2604.17775 https://arxiv.org/html/2604.17775

Wenqian Zhang: A closure result on spanning $k$-trees of graphs with given minimum degree https://arxiv.org/abs/2604.17728 https://arxiv.org/pdf/2604.17728 https://arxiv.org/html/2604.17728

Gang Chen, Qing Ren, Ilia Ponomarenko: On circulant ternary coherent configurations of prime degree https://arxiv.org/abs/2604.17687 https://arxiv.org/pdf/2604.17687 https://arxiv.org/html/2604.17687

Christopher Duffy, Benjamin Fok, Gary MacGillivray: The Gamma-Switch Ramsey Number https://arxiv.org/abs/2604.17684 https://arxiv.org/pdf/2604.17684 https://arxiv.org/html/2604.17684

Damek Davis: Forbidden subgraphs in divisor graphs and an Erd\H{o}s divisibility problem https://arxiv.org/abs/2604.17613 https://arxiv.org/pdf/2604.17613 https://arxiv.org/html/2604.17613

Bilal Ahmad Rather, Mustapha Aouchiche, Victor A. Bovdi: On (distance) Laplacian characteristic polynomials of power graphs https://arxiv.org/abs/2604.17607 https://arxiv.org/pdf/2604.17607 https://arxiv.org/html/2604.17607

Bart{\l}omiej Kielak, Daniel Kr\'al', Ander Lamaison, Xichao Shu: Fundamental cycles in grid graphs https://arxiv.org/abs/2604.17595 https://arxiv.org/pdf/2604.17595 https://arxiv.org/html/2604.17595

Aman Devnani, Pramod Eyyunni: Elementary symmetric polynomials and a potentially injective family of maps on partitions https://arxiv.org/abs/2604.17424 https://arxiv.org/pdf/2604.17424 https://arxiv.org/html/2604.17424

Lora R. Du, Guo-Niu Han: The inversion number statistic for inversion sequences https://arxiv.org/abs/2604.17387 https://arxiv.org/pdf/2604.17387 https://arxiv.org/html/2604.17387

Yaping Mao: Ramsey-finiteness for graph pairs: A complete solution to the Burr-Erd\H{o}s-Faudree-Schelp conjectures https://arxiv.org/abs/2604.17356 https://arxiv.org/pdf/2604.17356 https://arxiv.org/html/2604.17356

Yi Xu, Yi-Zheng Fan: Generalized spectral Tur\'an problems for disjoint cliques https://arxiv.org/abs/2604.17242 https://arxiv.org/pdf/2604.17242 https://arxiv.org/html/2604.17242

Juan Guti\'errez, Renzo G\'omez: Separating Matchings in Cubic Graphs https://arxiv.org/abs/2604.17226 https://arxiv.org/pdf/2604.17226 https://arxiv.org/html/2604.17226

Be\'ata B\'enyi, Sithembele Nkonkobe: Partial degenerate Stirling numbers https://arxiv.org/abs/2604.17146 https://arxiv.org/pdf/2604.17146 https://arxiv.org/html/2604.17146

Oleg Karpenkov, Yefei Ma: Markov numbers of semigroups https://arxiv.org/abs/2604.17069 https://arxiv.org/pdf/2604.17069 https://arxiv.org/html/2604.17069

Jie Ma, Shengjie Xie, Zhiheng Zheng: Hypergraphs without Subgraphs of Given Connectivity https://arxiv.org/abs/2604.17038 https://arxiv.org/pdf/2604.17038 https://arxiv.org/html/2604.17038

Isabella Novik, Hailun Zheng: Lower bounds on the $g$-numbers of spheres without large missing faces https://arxiv.org/abs/2604.16905 https://arxiv.org/pdf/2604.16905 https://arxiv.org/html/2604.16905

Kai Liang, Muxi Li: A Weak Solution of Inverse Treblecross https://arxiv.org/abs/2604.16759 https://arxiv.org/pdf/2604.16759 https://arxiv.org/html/2604.16759

Benjamin Grant: Topologizing infinite quivers and their mutations https://arxiv.org/abs/2604.16660 https://arxiv.org/pdf/2604.16660 https://arxiv.org/html/2604.16660

Emilie Dufresne, Gabriela Jeronimo, Jenny Kenkel, Haydee Lindo, Nelly Villamizar: Shuffling the Deck: Invariant Theory and the Graph Reconstruction Conjecture https://arxiv.org/abs/2604.16567 https://arxiv.org/pdf/2604.16567 https://arxiv.org/html/2604.16567

[2026-04-21 Tue (UTC), 26 new articles found for mathCO Combinatorics]

Radford Green, Cornell Holmes, Mee Seong Im: Multisymmetric functions on eventually constant cyclic graphs https://arxiv.org/abs/2604.16255 https://arxiv.org/pdf/2604.16255 https://arxiv.org/html/2604.16255

Nino Ba\v{s}i\'c, Ivan Damnjanovi\'c, Dragan Stevanovi\'c, Ivan Sto\v{s}i\'c: Some results on small ordered and cyclic Ramsey numbers https://arxiv.org/abs/2604.16188 https://arxiv.org/pdf/2604.16188 https://arxiv.org/html/2604.16188

Ruifang Liu, Hongyu Chen, Ao Fan: Extremal results for graphs with binding number strictly less than $1/r$ https://arxiv.org/abs/2604.16151 https://arxiv.org/pdf/2604.16151 https://arxiv.org/html/2604.16151