{ "id": "2103.15288", "version": "v1", "published": "2021-03-29T02:44:53.000Z", "updated": "2021-03-29T02:44:53.000Z", "title": "Sharp bounds on the zeroth-order general Randić index of trees in terms of domination number", "authors": [ "Chang Liu", "Jianping Li" ], "categories": [ "math.CO" ], "abstract": "The zeroth-order general Randi\\'c index of graph $G=(V_G,E_G)$, denoted by $^0R_{\\alpha}(G)$, is the sum of items $(d_{v})^{\\alpha}$ over all vertices $v\\in V_G$, where $\\alpha$ is a pertinently chosen real number. In this paper, we obtain the sharp upper and lower bounds on $^0R_{\\alpha}$ of trees with a domination number $\\gamma$, in intervals $\\alpha\\in(-\\infty,0)\\cup(1,\\infty)$ and $\\alpha\\in(0,1)$, respectively. The corresponding extremal graphs of these bounds are also characterized.", "revisions": [ { "version": "v1", "updated": "2021-03-29T02:44:53.000Z" } ], "analyses": { "subjects": [ "05C50", "05C35", "05C69" ], "keywords": [ "domination number", "sharp bounds", "zeroth-order general randic index", "pertinently chosen real number", "lower bounds" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }