Results 51 to 60 of about 49,024 (304)
On the Index of a Quadratic Form [PDF]
Canadian Mathematical Bulletin, 1958 Given a vector space V = {x, y, ...} over an arbitrary field. In V a symmetric bilinear form (x,y) i s given. A subspace W is called totally isotropic [t.i.] if (x,y) = 0 for every pair x W, y W.Let Vn and Vm be two t.i. subspaces of V; n < m. Lower indices always indicate dimensions. It is a well known and fundamental fact of analytic geometry that
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Supertropical quadratic forms I [PDF]
Journal of Pure and Applied Algebra, 2016 31 ...
Izhakian, Zur +2 more
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Advanced Engineering Materials, EarlyView.A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares +3 more
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A Multidimensional Functional Equation Having Quadratic Forms as Solutions
Journal of Inequalities and Applications, 2007 We obtain the general solution and the stability of the m-variable quadratic functional equation f(x1+y1,…,xm+ym)+f(x1−y1,…,xm−ym)=2f(x1,…,xm)+2f(y1,…,ym).
Jae-Hyeong Bae, Won-Gil Park
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Classifying Quadratic Forms Over Z2 in Three Variables
Journal of Mathematics, 2016 The quadratic forms in three variables over the field Z2 are classified. Some remarks are made about the group of equivalences GL(3,Z2) of the quadratic forms.
Gerard Thompson
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Toeplitz versus Hankel: semibounded operators [PDF]
Opuscula Mathematica, 2018 Our goal is to compare various results for Toeplitz \(T\) and Hankel \(H\) operators. We consider semibounded operators and find necessary and sufficient conditions for their quadratic forms to be closable. This property allows one to define \(T\) and \(
Dmitri R. Yafaev
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Semicrosses and quadratic forms
European Journal of Combinatorics, 1995 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading
Advanced Engineering Materials, EarlyView.The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
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Signdefiniteness and Reduction to Full Squares for the Bundle of Tree Quadratic Forms
Известия Иркутского государственного университета: Серия "Математика", 2016 The paper discusses the investigation of the relation of signdefiniteness of the bundle of three quadratic forms with to the simultaneous diagonalization by congruenttransformation of matrices of the respective quadratic forms.
M. A. Novickov
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On Approximating the Distribution of Quadratic Forms in Gamma Random Variables and Exponential Order Statistics [PDF]
Journal of Statistical Theory and Applications (JSTA), 2013 This paper proposes a moment-based approximation to the distribution of quadratic forms in gamma random variables. Quadratic forms in order statistics from an exponential population are considered as well.
A. Akbar Mohsenipour, Serge B. Provost
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