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The graph with spectrum 14^1 2^40 (−4)^10 (−6)^9

Blokhuis,A.
; 
Brouwer,A.E.
; 
Haemers,W.H.
Abstract
We show that there is a unique graph with spectrum as in the title. It is a subgraph of the McLaughlin graph. The proof uses a strong form of the eigenvalue interlacing theorem to reduce the problem to one about root lattices.
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Date
2012
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Tilburg University Research Output Collection
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Citation
Blokhuis, A, Brouwer, A E & Haemers, W H 2012, 'The graph with spectrum 14^1 2^40 (−4)^10 (−6)^9', Designs Codes and Cryptography, vol. 65, no. 1-2, pp. 71-75. < http://www.springerlink.com/content/f286747076842806/ >
URI
https://hdl.handle.net/20.500.14602/57452
License
info:eu-repo/semantics/restrictedAccess
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