A class of discretely defined positive linear operators satisfying DeVore-Gopengauz inequalities
Journal of Numerical Analysis and Approximation Theory, 1998 Not available.
Ioan Gavrea +2 more
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Journal of Numerical Analysis and Approximation Theory, 2021 We summarize several general results concerning quantitative inheritance properties for simultaneous approximation by tensor product operators and apply these to various situations.
Laura Beutel, Heiner Gonska
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On Convexity, Monotonicity and Positivity Analysis for Discrete Fractional Operators Defined Using Exponential Kernels [PDF]
Fractal and Fractional, 2022 This article deals with analysing the positivity, monotonicity and convexity of the discrete nabla fractional operators with exponential kernels from the sense of Riemann and Caputo operators. These operators are called discrete nabla Caputo–Fabrizio–Riemann and Caputo–Fabrizio–Caputo fractional operators.
Pshtiwan Othman Mohammed +3 more
openaire +2 more sources
Measures and Prescriptions to Reduce Stray Current in the Design of New Track Corridors
Energies, 2023 Stray currents can cause very rapid degradation and material loss at the points where the current leaves the metal and enters the electrolyte. Nowadays, many resources are invested in the protection of jeopardized structures, such as buried pipelines ...
Katarina Vranešić +3 more
doaj +1 more source
Bulletin of the South Ural State University series "Mathematics. Mechanics. Physics", 2023 Spectral problems for differential operators defined on quantum graphs are of great scientific interest related to problems in quantum mechanics, computer network modeling, image processing, ranking algorithms, modeling of electrical, and mechanical and acoustic processes, in networks of a diverse nature, in designing nano systems with prescribed ...
Kadchenko, Sergeĭ Ivanovich +3 more
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Branching laws for Verma modules and applications in parabolic geometry. I [PDF]
, 2015 We initiate a new study of differential operators with symmetries and combine this with the study of branching laws for Verma modules of reductive Lie algebras.
Kobayashi, Toshiyuki +3 more
core +1 more source
On the rate of convergence of discretely defined operators
Journal of Mathematical Analysis and Applications, 2015 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ioan Gavrea, Mircea Ivan
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Laguerre semigroup and Dunkl operators [PDF]
, 2011 We construct a two-parameter family of actions \omega_{k,a} of the Lie algebra sl(2,R) by differential-difference operators on R^N \setminus {0}. Here, k is a multiplicity-function for the Dunkl operators, and a>0 arises from the interpolation of the ...
Bent Ørsted +16 more
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Maximum-likelihood estimation for diffusion processes via closed-form density expansions [PDF]
, 2013 This paper proposes a widely applicable method of approximate maximum-likelihood estimation for multivariate diffusion process from discretely sampled data.
Li, Chenxu
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An Entropy Stable Nodal Discontinuous Galerkin Method for the Two Dimensional Shallow Water Equations on Unstructured Curvilinear Meshes with Discontinuous Bathymetry [PDF]
, 2016 We design an arbitrary high-order accurate nodal discontinuous Galerkin spectral element approximation for the nonlinear two dimensional shallow water equations with non-constant, possibly discontinuous, bathymetry on unstructured, possibly curved ...
Gassner, Gregor J. +3 more
core +1 more source