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on the skew spectral moments of graphs
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نویسنده
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taghvaee fatemeh ,fath-tabar gholam hossein
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منبع
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transactions on combinatorics - 2017 - دوره : 6 - شماره : 1 - صفحه:47 -54
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چکیده
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Let g be a simple graph, and gσ be an oriented graph of g with the orientation σ and skew-adjacency matrix s(gσ). the k−th skew spectral moment of gσ, denoted by tk(gσ), is defined as ∑ni=1(λi)k, where λ1,λ2,⋯,λn are the eigenvalues of gσ. suppose gσ11 and gσ22 are two digraphs. if there exists an integer k, 1≤k≤n−1, such that for each i, 0≤i≤k−1, ti(gσ11)=ti(gσ22) and tk(gσ11)
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کلیدواژه
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oriented graph ,skew spectral moment ,skew eigenvalue ,t-order ,skew characteristic polynomial.
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آدرس
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university of kashan, faculty of mathematical sciences, department of pure mathematics, ایران, university of kashan, faculty of mathematical sciences, department of pure mathematics, ایران
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پست الکترونیکی
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fathtabar@kashanu.ac.ir
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Authors
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