Results 51 to 60 of about 3,570,033 (364)
Hypergraphs and hypermatrices with symmetric spectrum
, 2016 It is well known that a graph is bipartite if and only if the spectrum of its adjacency matrix is symmetric. In the present paper, this assertion is dissected into three separate matrix results of wider scope, which are extended also to hypermatrices. To
Nikiforov, V.
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F1000ResearchThe concept of secondary range symmetric matrices is introduced here. Some characterizations as well as the equivalent conditions for a range symmetric matrix to be secondary range symmetric matrix is given.
Divya Shenoy
doaj +1 more source
Constrained Solutions of a System of Matrix Equations
Journal of Applied Mathematics, 2012 We derive the necessary and sufficient conditions of and the expressions for the orthogonal solutions, the symmetric orthogonal solutions, and the skew-symmetric orthogonal solutions of the system of matrix equations AX=B and XC=D, respectively. When the
Qing-Wen Wang, Juan Yu
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Parametrization of transition energy-momentum tensor form factors
Physics Letters B, 2022 While the Lorentz structures of the N→Δ transition matrix element of the vector current are well-known, that of the symmetric energy-momentum tensor current is unknown.
June-Young Kim
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F1000ResearchThe concept of secondary range symmetric matrices are introduced here. Some characterizations as well as the equivalent conditions for a range symmetric matrix to be secondary range symmetric matrix is given.
Divya Shenoy
doaj +1 more source
Pesquimat, 2014 This work proposes the minimization of bandwidth in sparse symmetric Matrix, using genetic algorithms and an oum software, developed in MS Visual Studio 6. O.
Ricardo López Guevara
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Sufficient conditions for symmetric matrices to have exactly one positive eigenvalue
Special Matrices, 2020 Let A = [aij] be a real symmetric matrix. If f : (0, ∞) → [0, ∞) is a Bernstein function, a sufficient condition for the matrix [f (aij)] to have only one positive eigenvalue is presented.
Al-Saafin Doaa, Garloff Jürgen
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String order and hidden topological symmetry in the SO(2n + 1) symmetric matrix product states [PDF]
, 2008 We have introduced a class of exactly soluble Hamiltonian with either SO(2n + 1) or SU(2) symmetry, whose ground states are the SO(2n + 1) symmetric matrix product states.
Hong-Hao Tu, Guang-Ming Zhang, T. Xiang
semanticscholar +1 more source
On completions of symmetric and antisymmetric block diagonal partial matrices
, 2013 A partial matrix is a matrix where only some of the entries are given. We determine the maximum rank of the symmetric completions of a symmetric partial matrix where only the diagonal blocks are given and the minimum rank and the maximum rank of the ...
Rubei, Elena
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Molecular Oncology, EarlyView.Proteomic and phosphoproteomic analyses were performed on lung adenocarcinoma (LUAD) tumors with EGFR, KRAS, or EML4–ALK alterations and wild‐type cases. Distinct protein expression and phosphorylation patterns were identified, especially in EGFR‐mutated tumors. Key altered pathways included vesicle transport and RNA splicing.
Fanni Bugyi +12 more
wiley +1 more source