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Some Lower Bounds for Estrada Index
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نویسنده
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ZHOU BO ,DU ZHIBIN
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منبع
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iranian journal of mathematical chemistry - 2010 - دوره : 1 - شماره : 2 - صفحه:67 -72
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چکیده
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For a graph g with n vertices, its estrada index is defined as ee(g) = σn i=1 eλi where λ1,λ2,...,λn are the eigenvalues of g. a lot of properties especially lower and upper bounds for the estrada index are known. we now establish further lower bounds for the estrada index
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کلیدواژه
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Estrada index ,eigenvalues (of graph) ,spectral moments ,lower bounds
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آدرس
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South China Normal University, Department of Mathematics, China, South China Normal University, Department of Mathematics, China
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پست الکترونیکی
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zhoubo@scnu.edu.cn
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Authors
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