Minimal spectrum-sums of bipartite graphs with exactly two vertex-disjoint cycles

Wei, Fuyi; Zhou, Bo; Trinajstić, Nenad (2008) Minimal spectrum-sums of bipartite graphs with exactly two vertex-disjoint cycles. Croatica Chemica Acta, 81 (2). pp. 363-367. ISSN 0011-1643

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Abstract

The spectrum-sum of a graph is defined as the sum of the absolute values of its eigenvalues. The graphs with minimal spectrum-sums in the class of connected bipartite graphs with exactly two vertex-disjoint cycles, in the class of connected bipartite graphs with exactly two vertex-disjoint cycles whose lengths are congruent with 2 modulo 4, and in the class of connected bipartite graphs with exactly two vertex-disjoint cycles one of which has length congruent with 2 modulo 4, are determined, respectively.

Item Type:	Article
Uncontrolled Keywords:	graph spectrum; spectrum-sum; bipartite graphs; alternant structures; acyclic conjugated molecules; bicyclic graphs; energy; systems
Subjects:	NATURAL SCIENCES > Chemistry
Divisions:	Division of Physical Chemistry
Projects:	Project title Project leader Project code Project type Razvoj metoda za modeliranje svojstava bioaktivnih molekula i proteina [184293] Bono Lučić 098-1770495-2919 MZOS
Depositing User:	Nenad Trinajstić
Date Deposited:	09 Oct 2013 09:45
URI:	http://fulir.irb.hr/id/eprint/741

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