Results 21 to 30 of about 12,772,525 (351)
Advances in Wishart-Type Modelling of Channel Capacity
Revstat Statistical Journal, 2020 This paper paves the way when the assumption of normality is challenged within the wireless communications systems arena. Innovative results pertaining to the distributions of quadratic forms and their associated eigenvalue density functions for the ...
J.T. Ferreira , A. Bekker , M. Arashi
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Regularity of Linear Systems of Differential Equations on the Axes and Pencils of Quadratic Forms
Communications in Advanced Mathematical Sciences, 2019 It is considered linear systems of differential equations and investigated questions of regularity of these systems. To explore the regularity it is comfortable to use quadratic form whose derivative with respect to the adjoint system is positive ...
Nataliya Stepanenko +2 more
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A New Slack Lyapunov Functional for Dynamical System with Time Delay
Mathematics, 2022 The traditional method of constructing a Lyapunov functional for dynamical systems with time delay is usually dependent on positive definite matrices in the quadratic form.
Can Zhao +3 more
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On the representation of quadratic forms by quadratic forms
Michigan Mathematical Journal, 2013 Using the circle method, we show that for a fixed positive definite integral quadratic form $A$, the expected asymptotic formula for the number of representations of a positive definite integral quadratic form $B$ by $A$ holds true, providing that the dimension of $A$ is large enough in terms of the dimension of $B$ and the maximum ratio of the ...
Dietmann, Rainer, Harvey, Michael
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On Sketching Quadratic Forms [PDF]
Proceedings of the 2016 ACM Conference on Innovations in Theoretical Computer Science, 2016 We undertake a systematic study of sketching a quadratic form: given an $n \times n$ matrix $A$, create a succinct sketch $\textbf{sk}(A)$ which can produce (without further access to $A$) a multiplicative $(1+ε)$-approximation to $x^T A x$ for any desired query $x \in \mathbb{R}^n$.
Alexandr Andoni +5 more
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Petrographic structures and Hardy – Weinberg equilibrium
Записки Горного института, 2020 The article is devoted to the most narrative side of modern petrography – the definition, classification and nomenclature of petrographic structures. We suggest a mathematical formalism using the theory of quadratic forms (with a promising extension to ...
Yury L. VOYTEKHOVSKY, Alena A. ZAKHAROVA
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On Solving Bi-level Multi-Objective Fully Quadratic Fractional Optimization Model with Fuzzy Demands [PDF]
International Journal of Mathematical, Engineering and Management Sciences, 2021 This paper has been designed to introduce the method for solving the Bi-level Multi-objective (BL-MO) Fully Quadratic Fractional Optimization Model through Fuzzy Goal Programming (FGP) approach by utilising non-linear programming.
Namrata Rani +2 more
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Orthogonal Families of Bicircular Quartics, Quadratic Differentials, and Edwards Normal Form
Axioms, 2023 Orthogonal families of bicircular quartics are naturally viewed as pairs of singular foliations of C^ by vertical and horizontal trajectories of a non-vanishing quadratic differential.
Joel C. Langer, David A. Singer
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Nonlinear Analysis, 2014 In this paper, we dealt with the issue of the regularity of the linear extension of the dynamical system. Using the Lyapunov function with the changeable sign, conditions for the regularity of the entire examined dynamical system were given, assuming ...
Dariusz Paczko, Viktor Kulyk
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Groups from Class 2 Algebras and the Weil Character [PDF]
Advances in Group Theory and Applications, 2017 We investigate the behaviour of the Weil character of the symplectic group on restriction to subgroups arising from commutative nilpotent algebras of class 2. We give explicit descriptions of the decomposition of the Weil character when restricted to the
Christakis A. Pallikaros, Harold N. Ward
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