Let G be a graph and d v denote the degree of the vertex v in G. The zeroth-order general Randić index of a graph is defined as Ra0(G)=åv Î V(G)dvaR_{alpha}^0(G)=sum_{vin V(G)}{d_{v}}^{alpha} where α is an arbitrary real number. In this paper, we investigate the zeroth-order general Randić index Ra0(G)R_{alpha}^0(G) of conjugated unicyclic graphs G (i.e., unicyclic graphs with a perfect matching) and sharp lower and upper bounds are obtained for Ra0(G)R_{alpha}^0(G) depending on α in different intervals.
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机译:令G为图,d v sub>表示G中顶点v的度。图的零阶一般Randić索引定义为R a sub> 0 sup>(G)=å vÎV(G) sub> d v sub> a sup> R_ {alpha} ^ 0(G)= sum_ {vin V(G)} {d_ {v}} ^ {alpha}其中α是任意实数。在本文中,我们研究了共轭单圈图G(即,零阶通用Randić指数R a sub> 0 sup>(G)R_ {alpha} ^ 0(G)根据不同的α,为R a sub> 0 sup>(G)R_ {alpha} ^ 0(G)获得具有完美匹配的单环图和上下限的尖锐间隔。
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