5,007 research outputs found
Purification and properties of a maltotriose-producing alpha-amylase from Thermobifida fusca
No full textBioconversion and identification of phytosterones from phytosterol by a mutant of Arthrobacter simplex
No full texto-Orsellinaldehyde from the submerged culture of the edible mushroom Grifola frondosa exhibits selective cytotoxic effect against Hep 3B cells through apoptosis
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Bioconversion of benzoic acid to cis, cis-muconic acid by Corynebacterium pseudodiphtheriticum
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Optimization of medium composition for the production of extracellular amylase by Thermobifida fusca using a response surface methodology
No full textDevelopments on Spectral Characterizations of Graphs
Full text linkIn [E.R. van Dam and W.H. Haemers, Which graphs are determined by their spectrum?, Linear Algebra Appl. 373 (2003), 241-272] we gave a survey of answers to the question of which graphs are determined by the spectrum of some matrix associated to the graph. In particular, the usual adjacency matrix and the Laplacian matrix were addressed. Furthermore, we formulated some research questions on the topic. In the meantime some of these questions have been (partially) answered. In the present paper we give a survey of these and other developments.2000 Mathematics Subject Classification: 05C50Spectra of graphs;Cospectral graphs;Generalized adjacency matrices;Distance-regular graphs
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