On the Durrmeyer-type modification of some discrete approximation operators.
Pych-Taberska, Paulina (1994)
Georgian Mathematical Journal
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Displaying similar documents to “Simultaneous approximation by a class of linear positive operators.”
On the Durrmeyer-type modification of some discrete approximation operators.
On some shift invariant integral operators, univariate case
George A. Anastassiou, Heinz H. Gonska (1995)
Annales Polonici Mathematici
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In recent papers the authors studied global smoothness preservation by certain univariate and multivariate linear operators over compact domains. Here the domain is ℝ. A very general positive linear integral type operator is introduced through a convolution-like iteration of another general positive linear operator with a scaling type function. For it sufficient conditions are given for shift invariance, preservation of global smoothness, convergence to the unit with rates, shape preserving...
Approximations of the distribution of the sum of random variables from the generalized logistic distribution
Matthev O. Ojo (2002)
Kragujevac Journal of Mathematics
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Kolmogorov type inequalities for hypersingular integrals with homogeneous characteristic.
Babenko, Vladislav F., Churilova, Mariya S. (2007)
Banach Journal of Mathematical Analysis [electronic only]
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A note on lacunary approximation on [-1,1]
S. Zhou (1993)
Colloquium Mathematicae
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Finite element approximation of the Navier-Stokes equation.
Boncuţ, Mioara (2004)
General Mathematics
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Multiplication operators on non-locally convex weighted function spaces.
Alsulami, Sadu M., Alsulami, Hamed M., Khan, Liaqat Ali (2009)
Acta Universitatis Apulensis. Mathematics - Informatics
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Partial Differentiation, Differentiation and Continuity on n -Dimensional Real Normed Linear Spaces
Takao Inoué, Adam Naumowicz, Noboru Endou, Yasunari Shidama (2011)
Formalized Mathematics
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In this article, we aim to prove the characterization of differentiation by means of partial differentiation for vector-valued functions on n-dimensional real normed linear spaces (refer to [15] and [16]).
On convergence of greedy approximations for the trigonometric system.
Konyagin, Sergei V. (2007)
Banach Journal of Mathematical Analysis [electronic only]
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Jackson-type theorems for compact symmetric spaces of rank 1.
Platonov, S.S. (2001)
Sibirskij Matematicheskij Zhurnal
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Convergence of approximate solutions of a differential equation
Jan Kowalski (1994)
Banach Center Publications
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The proof of the Nirenberg-Treves conjecture
Nils Dencker (2003)
Journées équations aux dérivées partielles
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We prove the Nirenberg-Treves conjecture : that for principal type pseudo-differential operators local solvability is equivalent to condition (). This condition rules out certain sign changes of the imaginary part of the principal symbol along the bicharacteristics of the real part. We obtain local solvability by proving a localizable estimate for the adjoint operator with a loss of two derivatives (compared with the elliptic case). The proof involves a new metric in the Weyl (or Beals-Fefferman)...