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On the General Sum–Connectivity Co–Index of Graphs
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نویسنده
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SU GUIFU ,XU LAN
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منبع
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iranian journal of mathematical chemistry - 2011 - دوره : 2 - شماره : 1 - صفحه:89 -98
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چکیده
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In this paper, a new molecular-structure descriptor, the general sum–connectivity co–index is considered, which generalizes the first zagreb co–index and the general sum–connectivity index of graph theory. we mainly explore the lower and upper bounds in terms of the order and size for this new invariant. additionally, the nordhaus–gaddum–type result is also represented.
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کلیدواژه
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general sum–connectivity co–index ,first Zagreb co–index ,lower and upper bounds
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آدرس
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Beijing Institute of Technology, China, Changji University, China
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Authors
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