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Comparing the second multiplicative Zagreb coindex with some graph invariants
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نویسنده
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فلاحتی نژاد فرزانه ,ایرانمنش علی ,تهرانیان ابوالفضل ,آذری مهدیه
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منبع
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transactions on combinatorics - 2014 - دوره : 3 - شماره : 4 - صفحه:31 -41
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چکیده
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the second multiplicative zagreb coindex of a simple graph $g$ is defined as: $${overline{pi{}}}_2left(gright)=prod_{uvnotin{}e(g)}d_gleft(uright)d_gleft(vright),$$ where $d_gleft(uright)$ denotes the degree of the vertex $u$ of $g$. in this paper, we compare $overline{{pi}}_2$-index with some well-known graph invariants such as the wiener index, schultz index, eccentric connectivity index, total eccentricity, eccentric-distance sum, the first zagreb index and coindex and the first multiplicative zagreb index and coindex.
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کلیدواژه
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Degree (in graphs) ,Topological index ,multiplicative Zagreb coindex
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آدرس
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islamic azad university, Department of Mathematics, Science and Research Branch, Islamic Azad University, P O Box: 14515-1775, Tehran, ایران, tarbiat modares university, Department of Pure Mathematics, Faculty of Mathematical Sciences, Tarbiat Modares University, P O Box: 14115-137, Tehran, ایران, islamic azad university, Department of Mathematics, Science and Research Branch, Islamic Azad University, P O Box: 14515-1775, Tehran, ایران, islamic azad university, Department of Mathematics, Kazerun Branch, Islamic Azad University, P O Box: 73135-168, Kazerun,, ایران
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پست الکترونیکی
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azari@kau.ac.ir
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Authors
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