منابع مشابه
Models of a K-Rational Identity System
A rational language can be studied from different points of view. For instance, it can be seen as a part of the free monoid or as a set recognized by a finite automaton; this leads to combinatoric or graphic studies. It can also be considered as a series with coefficients in the boolean semiring; this second point of view is richer since it leads to generalize naturally the theory of rational l...
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متن کاملA note on polyomino chains with extremum general sum-connectivity index
The general sum-connectivity index of a graph $G$ is defined as $chi_{alpha}(G)= sum_{uvin E(G)} (d_u + d_{v})^{alpha}$ where $d_{u}$ is degree of the vertex $uin V(G)$, $alpha$ is a real number different from $0$ and $uv$ is the edge connecting the vertices $u,v$. In this note, the problem of characterizing the graphs having extremum $chi_{alpha}$ values from a certain collection of polyomino ...
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ژورنال
عنوان ژورنال: Filomat
سال: 2015
ISSN: 0354-5180,2406-0933
DOI: 10.2298/fil1508721x