نتایج جستجو برای: ev degree topological indices
تعداد نتایج: 466131 فیلتر نتایج به سال:
Domination is an ancient graph theoretical topic with applications in psychology, political sci- ence, and human behaviour. A topological index area of theory that governs a compound’s molecular structure. This work aims to conglomerate the two different branches determine dominational variants some celebrated degree based index. The newly described descriptors are generalised standard graphs, ...
Let $G=(V,E)$ be a simple connectedgraph with $n$ vertices, $m$ edges and sequence of vertex degrees$d_1 ge d_2 ge cdots ge d_n>0$, $d_i=d(v_i)$, where $v_iin V$. With $isim j$ we denote adjacency ofvertices $v_i$ and $v_j$. The generalsum--connectivity index of graph is defined as $chi_{alpha}(G)=sum_{isim j}(d_i+d_j)^{alpha}$, where $alpha$ is an arbitrary real<b...
The recent discovery of boron triangular nanotubes competes with carbon in many respects. The closed form of M-polynomial of nanotubes produces closed forms of many degree-based topological indices which are numerical parameters of the structure and, in combination, determine properties of the concerned nanotubes. In this report, we give M-polynomials of boron triangular nanotubes and recover m...
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