A spectral proof of the uniqueness of a strongly regular graph with parameters (81, 20, 1, 6)

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Title:	A spectral proof of the uniqueness of a strongly regular graph with parameters (81, 20, 1, 6)
Authors:	ID Stevanović, Dragan (Author) ID Milošević, Marko (Author)
Files:	http://dx.doi.org/10.1016/j.ejc.2008.07.021
Language:	Unknown
Work type:	Not categorized
Typology:	1.01 - Original Scientific Article
Organization:	IAM - Andrej Marušič Institute
Abstract:	We give a new proof that there exists a unique strongly regular graph with parameters (81, 20, 1, 6). Unlike the finite geometry approach used by Brouwerand haemers, we use linear algebra and spectral graph theory concepts, namely the technique of star complements, in our proof.
Keywords:	graph theory
Year of publishing:	2009
Number of pages:	str. 957-968
Numbering:	Vol. 30, no. 4
PID:	20.500.12556/RUP-3416
ISSN:	0195-6698
UDC:	519.17
COBISS.SI-ID:	1024073812
Publication date in RUP:	15.10.2013
Views:	3424
Downloads:	35
Metadata:
:	STEVANOVIĆ, Dragan and MILOŠEVIĆ, Marko, 2009, A spectral proof of the uniqueness of a strongly regular graph with parameters (81, 20, 1, 6). [online]. 2009. Vol. 30, no. 4, p. 957–968. [Accessed 6 April 2025]. Retrieved from: http://dx.doi.org/10.1016/j.ejc.2008.07.021 Copy citation

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