A generalization of a theorem of Neumaier

DOI10.1007/S10623-016-0232-5zbMath1367.05213OpenAlexW2412361787MaRDI QIDQ2364631

Jack H. Koolen, Xi-ming Cheng

Publication date: 21 July 2017

Published in: Designs, Codes and Cryptography (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/s10623-016-0232-5

zbMATH Keywords

strongly regular graphsnon-regularthree distinct eigenvaluesbiregular graphsNeumaier's theorem

Mathematics Subject Classification ID

Association schemes, strongly regular graphs (05E30) Graphs and linear algebra (matrices, eigenvalues, etc.) (05C50)

Related Items (1)

Recent progress on graphs with fixed smallest adjacency eigenvalue: a survey

Cites Work

• Unnamed Item
• Biregular graphs with three eigenvalues
• A structure theory for graphs with fixed smallest eigenvalue
• Strongly regular graphs with smallest eigenvalue -m
• Nonregular graphs with three eigenvalues
• On fat Hoffman graphs with smallest eigenvalue at least -3
• ON THE MULTIPLICITIES OF GRAPH EIGENVALUES

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