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Schmidt Decomposition of Quaternion Matrix and the Orthonormalization of Vectors in a Generalized Unitary Space 被引量:1
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作者 王卿文 林春艳 《Chinese Quarterly Journal of Mathematics》 CSCD 1996年第4期30-37, ,共8页
In this paper we derive a practical method of solving simultaneously the problem of Schmidt decomposition of quaternion matrix and the orthonormalization of vectors in a generalized unitary space by using elementary c... In this paper we derive a practical method of solving simultaneously the problem of Schmidt decomposition of quaternion matrix and the orthonormalization of vectors in a generalized unitary space by using elementary column operations on matrices over the quaternion field. 展开更多
关键词 quaternion matrix Schmidt decomposition generalized unitary space (generalized)positive upper matrix
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Analysis of a Composition Operator’s Eigenvalue Equation on Unitary Spaces by the Krein-Rutman Theorem
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作者 A.N.M.Rezaul Karim 《Applied Mathematics》 2020年第2期76-83,共8页
The Krein-Rutman theorem is vital in partial differential equations that are non-linear and provides evidence of the presence of several significant eigenvalues useful in topological degree calculations, stability ana... The Krein-Rutman theorem is vital in partial differential equations that are non-linear and provides evidence of the presence of several significant eigenvalues useful in topological degree calculations, stability analysis, and bifurcation theory. Schr?der’s equation which has been used extensively in studies of turbulence is an equation with a single independent variable suitable for encoding self-similarity. The concept of Hilbert spaces has been an inner product space frequently used due to its convenience in countless dimensional vector analysis. This paper is aimed at proving a number of solutions through the Krein-Rutman theorem in unitary spaces especially in Hilbert spaces. It has been certainly observed that the whole Krein-Rutman theorem system has a fairly stable scope, and has strong regular features, and many non-linear elliptic operators need the most ethical principles to satisfy the comparison policy. 展开更多
关键词 Krein-Rutman Theorem unitary space Bounded Solutions DIAGONALIZATION Schroder Equation
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The Least Square Solutions to the Quaternion Matrix Equation AX=B 被引量:3
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作者 薛有才 《Chinese Quarterly Journal of Mathematics》 CSCD 1997年第1期87-90, ,共4页
A norm of a quaternion matrix is defined. The expressions of the least square solutions of the quaternion matrix equation AX = B and the equation with the constraint condition DX = E are given.
关键词 the quaternion field matrix equation: generalized unitary space the least square solution
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Constructions of 1(1/2)-Designs from Unitary Geometry over Finite Fields
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作者 Rongquan Feng Yang Zhang 《Algebra Colloquium》 SCIE CSCD 2017年第3期381-392,共12页
In this paper, we construct some 1(1/2)-designs, which are also known as partial geometric designs, using totally isotropic subspaces of the unitary space. Phrthermore, these 1(1/2)-designs yield six infinite fami... In this paper, we construct some 1(1/2)-designs, which are also known as partial geometric designs, using totally isotropic subspaces of the unitary space. Phrthermore, these 1(1/2)-designs yield six infinite families of directed strongly regular graphs. 展开更多
关键词 1(1/2)-design unitary space totally isotropic subspace directed strongly regulargraph
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