Sažetak The total π-electron energy, as calculated within the Hückel tight-binding molecular
orbital approximation, is a quantum-theoretical characteristic of conjugated molecules that …

With any symmetrizable integer Cartan matrix C∈ SC arn⊆ M n (Z), a Z-invertible Coxeter
matrix Cox C∈ M n (Z) is associated. We study such positive definite matrices up to a strong …

ENERGIES OF GRAPHS SURVEY, CENSUS, BIBLIOGRAPHY Ivan Gutman & Boris Furtula
Page 1 ENERGIES OF GRAPHS SURVEY, CENSUS, BIBLIOGRAPHY Ivan Gutman & Boris …

This monograph presents combinatorial and numerical issues on integral quadratic forms as
originally obtained in the context of representation theory of algebras and derived …

In this two parts article with the same main title we study a problem of Coxeter-Gram spectral
analysis of edge-bipartite graphs (bigraphs), a class of signed graphs. We ask for a criterion …

We develop a computational technique for classification of a class of signed graphs (called
edge-bipartite graphs), we started in Simson (2013)[42] and Bocian et al.(2014)[6]. Here we …

We study edge-bipartite graphs (bigraphs), a class of signed graphs, by means of the
inflation algorithm which relies on performing certain elementary transformations on a given …

We continue the study of finite connected edge-bipartite graphs Δ, with m≥ 2 vertices (a
class of signed graphs), started in [SIAM J. Discrete Math. 27 (2013), 827-854] and …

We continue the study of finite connected loop-free edge-bipartite graphs Δ, with m≥ 3
vertices (a class of signed graphs), we started in Simson (2013)[48] and M. Gąsiorek et …

A moderate intake of wine is associated with a positive impact on human health owing to the
effects of important biologically active components present in the wine in large amounts. The …