Results 231 to 240 of about 618,048 (272)
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On the Randomized Bernstein Approximation Theorem and the Order of Approximation
Lobachevskii Journal of Mathematics, 2023zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Tran Loc Hung
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Grundlehren Der Mathematischen Wissenschaften in Einzeldarstellungen Mit Besonderer Berücksichtigung Der Anwendungsgebiete, 1996
This chapter, and part of the next, are devoted to a result which can be viewed either as an approximation theorem, or as a theorem characterizing the kernel of a trace operator for arbitrary sets. In the present chapter we treat the case of Sobolev spaces W m,p (R N ) for integer m and 1 < p < ∞.
Lars Inge Hedberg
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This chapter, and part of the next, are devoted to a result which can be viewed either as an approximation theorem, or as a theorem characterizing the kernel of a trace operator for arbitrary sets. In the present chapter we treat the case of Sobolev spaces W m,p (R N ) for integer m and 1 < p < ∞.
Lars Inge Hedberg
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Approximation theorems on graphs
Journal of Approximation Theory, 2021zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Chao Huang 0004 +3 more
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Approximating classical theorems
Journal of Logic and Computation, 1998Approximation of classical theorems by constructive ones is considered. (By constructive proofs the authors understand those proofs that do not use the Excluded Middle principle.) The paper develops some ideas of G. Kreisel, P. S. Novikov and T. Coquand.
Baratella, Stefano, S. Berardi
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On the Dixmier Approximation Theorem
Proceedings of the London Mathematical Society, 1984For a self-adjoint element A of a von Neumann algebra \({\mathcal R}\) let co(A) denote the convex hull of \(\{UAU^*| U\) unitary in \({\mathcal R}\}\). Let further \(co(A)^-\) and \(co(A)^ =\) be the weak and the norm closure of co(A), respectively.
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Approximation Theorems of Analysis
1999This is an expository article about Dirac families. Applications include the theorem of Weierstrass on polynomial approximations of continuous functions, the result of Fejér-Cesàro on Fourier series, harmonic functions and Poisson families, and finally, solutions of the heat equation.
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Approximately Axisymmetric Antidynamo Theorems
SIAM Journal on Applied Mathematics, 2018The validity of the well-known Cowling's theorem, that an axially symmetric MHD dynamo cannot exist in an electrically conducting fluid, is studied by the author for small scale deviations from strict axial symmetry. It is shown that the theorem can be extended as to include weakly non-axisymmetric configurations under the derived new symmetry ...
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