Results 31 to 40 of about 525,717 (358)
On orthogonality in nets [PDF]
Časopis pro pěstování matematiky, 1988 The paper is devoted to the study of orthogonality of lines in the Desargues net of infinite order and degree satisfying the quadrangle closure condition. In the first part closure conditions in a net are investigated. In the second part of the paper coordinate algebra of the net in which the quadrangle closure condition as well as the orthologic ...
Jaroslav Lettrich, Ján Perenčaj
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Orthogonality of quasi-orthogonal polynomials
Filomat, 2018 A result of P?lya states that every sequence of quadrature formulas Qn(f) with n nodes and positive Cotes numbers converges to the integral I(f) of a continuous function f provided Qn(f) = I(f) for a space of algebraic polynomials of certain degree that depends on n.
Bracciali, Cleonice F. +2 more
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Orthogonality Sampling Method for the Electromagnetic Inverse Scattering Problem [PDF]
SIAM Journal on Scientific Computing, 2019 This paper is concerned with the electromagnetic inverse scattering problem that aims to determine the location and shape of anisotropic scatterers from far field data (at a fixed frequency).
I. Harris, Dinh-Liem Nguyen
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A New Approximate Birkhoff Orthogonality Type
European Journal of Mathematical Analysis, 2022 In this note, we introduce a new approximate Birkhoff orthogonality type and give a characterization for inner product spaces using the approximate orthogonality.
Chuanjiang Zhou, Qi Liu, Yongjin Li
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Almost orthogonal submatrices of an orthogonal matrix [PDF]
Israel Journal of Mathematics, 1999 Let $A$ be an $n \times M$ matrix whose rows are orthonormal. Let $A_I$ be a submatrix of $A$ whose column indexes belong to the set $I$. Given $ >0$ we estimate the smallest cardinality of the set $I$, such that the operator $A_I$ is an $ $-isometry.
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Discrete Mathematics, 1998 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
L. Caccetta, R. P. Anstee
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Quench Dynamics and Orthogonality Catastrophe of Bose Polarons. [PDF]
Physical Review Letters, 2018 We monitor the correlated quench induced dynamical dressing of a spinor impurity repulsively interacting with a Bose-Einstein condensate. Inspecting the temporal evolution of the structure factor, three distinct dynamical regions arise upon increasing ...
S. Mistakidis +4 more
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A Novel Block-based Watermarking Scheme Using the SVD Transform
Algorithms, 2009 In this paper, a block-based watermarking scheme based on the Singular Value Decomposition (SVD) is proposed. Our watermark, a pseudo-random Gaussian sequence, is embedded by modifying the angles formed by the right singular vectors of each block of the ...
Alessandro Basso +4 more
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An orthogonality relation for $\mathrm {GL}(4, \mathbb R) $ (with an appendix by Bingrong Huang)
Forum of Mathematics, Sigma, 2021 Orthogonality is a fundamental theme in representation theory and Fourier analysis. An orthogonality relation for characters of finite abelian groups (now recognized as an orthogonality relation on $\mathrm {GL}(1)$) was used by Dirichlet to prove ...
Dorian Goldfeld +2 more
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Parallelizable Algorithms for Optimization Problems with Orthogonality Constraints [PDF]
SIAM Journal on Scientific Computing, 2018 To construct a parallel approach for solving optimization problems with orthogonality constraints is usually regarded as an extremely difficult mission, due to the low scalability of the orthonormalization procedure.
Bin Gao, Xin Liu, Ya-xiang Yuan
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