نتایج جستجو برای: order general randic index
تعداد نتایج: 1881169 فیلتر نتایج به سال:
<abstract><p>We introduce the general Albertson irregularity index of a connected graph $ G and define it as A_{p}(G) = (\sum_{uv\in E(G)}|d(u)-d(v)|^p)^{\frac{1}{p}} $, where p is positive real number d(v) degree vertex v in $. The new not only generalization well-known \sigma $-index, but also Minkowski norm vertex. We present lower upper bounds on index. In addition, we study ext...
the narumi-katayama index was the first topological index defined by the product of some graph theoretical quantities. let $g$ be a simple graph with vertex set $v = {v_1,ldots, v_n }$ and $d(v)$ be the degree of vertex $v$ in the graph $g$. the narumi-katayama index is defined as $nk(g) = prod_{vin v}d(v)$. in this paper, the narumi-katayama index is generalized using a $n$-ve...
the relationship between the randic , wiener, hosoya , balaban, schultz indices, harary numbers anddistance matrix to enthalpies of formation (airf), heat capacity, (cp) , enthalpies of combustion (ah °c ),enthalpy of vaporization (ah °vap) and normal boiling points (bpk)of c2 c10 normal alkanes isrepresented
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