ORDERING CATACONDENSED HEXAGONAL SYSTEMS WITH RESPECT TO VDB TOPOLOGICAL INDICES
نویسندگان
چکیده
منابع مشابه
Extremal Values of VDB Topological Indices over Catacondensed Polyomino Systems
A VDB topological index is defined as
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The Padmakar-Ivan (PI) index is a Wiener-Szeged-like topological index which reflects certain structural features of organic molecules. The PI index of a graph G is the sum of all edges uv of G of the number of edges which are not equidistant from the vertices u and v. In this paper we obtain the second and third extremals of catacondensed hexagonal systems with respect to the PI index.
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the padmakar-ivan (pi) index is a wiener-szeged-like topological index which reflectscertain structural features of organic molecules. the pi index of a graph g is the sum of alledges uv of g of the number of edges which are not equidistant from the vertices u and v. inthis paper we obtain the second and third extremals of catacondensed hexagonal systems withrespect to the pi index.
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ژورنال
عنوان ژورنال: Revista de Matemática: Teoría y Aplicaciones
سال: 2017
ISSN: 2215-3373,1409-2433
DOI: 10.15517/rmta.v23i1.22554