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246. A spectral proof of the uniqueness of a strongly regular graph with parameters (81, 20, 1, 6)Dragan Stevanović, Marko Milošević, 2009, original scientific article 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
Published in RUP: 15.10.2013; Views: 2814; Downloads: 32
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247. Adjacency preservers, symmetric matrices, and coresMarko Orel, 2012, original scientific article Abstract: It is shown that the graph ▫$\Gamma_n$▫ that has the set of all ▫$n \times n$▫ symmetric matrices over a finite field as the vertex set, with two matrices being adjacent if and only if the rank of their difference equals one, is a core if ▫$n \ge 3$▫. Eigenvalues of the graph ▫$\Gamma_n$▫ are calculated as well.
Keywords: adjacency preserver, symmetric matrix, finite field, eigenvalue of a graph, coloring, quadratic form
Published in RUP: 15.10.2013; Views: 3282; Downloads: 141
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248. Športno stavništvoMarko Hrvatin, 2012, undergraduate thesis Keywords: športne stave, stavništvo, igre na srečo, verjetnost, zaslužek, dobitki, strategije, vloga koeficientov, stavniške afere, podkupovanje
Published in RUP: 15.10.2013; Views: 3857; Downloads: 129
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249. Družba spektaklaMarko Galič, 2012, master's thesis Keywords: družba spektakla, potrošništvo, patološki narcisizem, blagovni fetišizem, jouissance, kapitalistična eksploatacija, spektakelski odnosi, ideologija izbire, tesnoba, magistrske naloge
Published in RUP: 15.10.2013; Views: 3701; Downloads: 111
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