Difference families, skew Hadamard matrices, and critical groups of doubly regular tournaments

zbMath1420.05029arXiv1905.08568MaRDI QIDQ2325760

Venkata Raghu Tej Pantangi

Publication date: 30 September 2019

Published in: The Electronic Journal of Combinatorics (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/1905.08568

zbMATH Keywords

Hadamard difference familiesskew Hadamard difference families

Mathematics Subject Classification ID

Combinatorial aspects of matrices (incidence, Hadamard, etc.) (05B20) Graphs and abstract algebra (groups, rings, fields, etc.) (05C25) Graphs and linear algebra (matrices, eigenvalues, etc.) (05C50) Combinatorial aspects of difference sets (number-theoretic, group-theoretic, etc.) (05B10) Directed graphs (digraphs), tournaments (05C20) Canonical forms, reductions, classification (15A21)

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