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on leap zagreb indices of graphs
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نویسنده
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naji a.m. ,soner n.d. ,gutman ivan
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منبع
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communications in combinatorics and optimization - 2017 - دوره : 2 - شماره : 2 - صفحه:99 -117
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چکیده
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The first and second zagreb indices of a graph are equal, respectively, to the sum of squares of the vertex degrees, and the sum of the products of the degrees of pairs of adjacent vertices. we now consider analogous graph invariants, based on the second degrees of vertices (number of their second neighbors), called leap zagreb indices. a number of their basic properties is established.
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کلیدواژه
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degree (of vertex) ,second degree ,zagreb indices ,leap zagreb indices
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آدرس
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university of mysore, department of studies in mathematics, india, university of mysore, department of studies in mathematics, india, university of kragujevac, faculty of science, serbia
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پست الکترونیکی
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gutman@kg.ac.rs
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Authors
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