W. Trebels

发表

Regular Article: On the Rate of Almost Everywhere Convergence of Certain Classical Integral Means, II

A. Stokolos, A. Kamaly, W. Trebels, 1999 .

Multipliers for (C,α)-bounded Fourier expansions in Banach spaces and approximation theory

W. Trebels, 1973 .

Multiplier criteria of Hörmander type for Jacobi expansions

George Gasper, Walter Trebels, G. Gasper, 1980 .

Multiplier criteria of Hörmander type for Fourier series and applications to Jacobi series and Hankel transforms

G. Gasper, W. Trebels, 1979 .

A Riemann-Lebesgue Lemma for Jacobi expansions

G. Gasper, W. Trebels, 1995, math/9504215.

On summation processes of Fourier expansions in Banach spaces, III. Jackson- and Zamansky-type inequalities for Abel-bounded expansions

P. Butzer, R. Nessel, W. Trebels, 1975 .

Fractional integration for Laguerre expansions

G. Gasper, K. Stempak, W. Trebels, 1994, math/9408210.

Radial Fourier multipliers of LP ( R 2 ) ( Bochner-Riesz multipliers / localized potential spaces / square functions )

A. Carbery, G. Gasper, W. Trebels, 2022 .

On a restriction problem of de Leeuw type for Laguerre multipliers

G. Gasper, W. Trebels, 1994, math/9408211.

Hankel Multipliers And Transplantation Operators

K. Stempak, W. Trebels, 1996, math/9610224.

Ulyanov-type Inequalities Between Lorentz–Zygmund Spaces

B. Opic, S. Tikhonov, Amiran Gogatishvili, 2014, Journal of Fourier Analysis and Applications.

Embeddings for spaces of Lorentz–Sobolev type

A. Seeger, W. Trebels, 2018, Mathematische Annalen.

Imbedding theorems for spaces of hypersingular integrals and Bessel potentials

W. Trebels, 1972 .

Moduli of Smoothness and Rate of a.e. Convergence for Some Convolution Operators

A. Stokolos, W. Trebels, 2012 .

Ulyanov-type inequalities and generalized Liouville derivatives

S. Tikhonov, W. Trebels, 2011, Proceedings of the Royal Society of Edinburgh: Section A Mathematics.

Inequalities for moduli of smoothness versus embeddings of function spaces

W. Trebels, 2010 .

Sharp embeddings of Bessel potential spaces with logarithmic smoothness

B. Opic, W. Trebels, 2003, Mathematical Proceedings of the Cambridge Philosophical Society.

On the Rate of Almost Everywhere Convergence of Abel-Cartwright means on Lp(Rn)

A. Stokolos, W. Trebels, 1998 .

On weighted transplantation and multipliers for Laguerre expansions

K. Stempak, W. Trebels, 1993, math/9307203.

Estimates for moduli of continuity of functions given by their Fourier transform

Walter Trebels, W. Trebels, 1976, Constructive Theory of Functions of Several Variables.

SOME NECESSARY CONDITIONS FOR RADIAL FOURIER MULTIPLIERS

W. Trebels, 1976 .

Generalized Liouville differentiation, truncated hypersingular integrals and K-functionals

E. Belinsky, W. Trebels, 2004 .

Embeddings for spaces of Lorentz–Sobolev type

A. Seeger, W. Trebels, 2018, Mathematische Annalen.

On hypersingular integrals and anisotropic Bessel potential spaces

W. Trebels, H. Dappa, 1984 .

Low regularity classes and entropy numbers

A. Seeger, W. Trebels, 2007, math/0703067.

On the Rate of Almost Everywhere Convergence of Certain Classical Integral Means

A. Stokolos, W. Trebels, 1999 .

On maximal functions generated by Fourier multipliers

W. Trebels, H. Dappa, 1985 .

C A ] 1 2 A pr 1 99 5 Ultraspherical multipliers revisited

G. Gasper, W. Trebels, 1995 .

Multipliers with respect to spectral measures in Banach spaces and approximation I. Radial multipliers in connection with Riesz-bounded spectral measures

P. Butzer, R. Nessel, W. Trebels, 1973 .

A lower estimate for the Lebesgue constants of linear means of Laguerre expansions

G. Gasper, W. Trebels, 1998 .

On necessary multiplier conditions for Laguerre expansions II

G. Gasper, W. Trebels, 1994 .

On Necessary Multiplier Conditions for Laguerre Expansions

G. Gasper, W. Trebels, 1991, Canadian Journal of Mathematics.

The K-functional and saturated linear approximation processes

W. Trebels, 2023, Sampling Theory, Signal Processing, and Data Analysis.

Ulyanov-type Inequalities Between Lorentz–Zygmund Spaces

B. Opic, S. Tikhonov, Amiran Gogatishvili, 2014 .

On Ulyanov inequalities in Banach spaces and semigroups of linear operators

Walter Trebels, U. Westphal, U. Westphal, 2009, J. Approx. Theory.

Limiting reiteration for real interpolation with slowly varying functions

B. Opic, Amiran Gogatishvili, W. Trebels, 2005 .

Almost optimal estimates for entropy numbers of B2,21/2 and its consequences

E. Belinsky, W. Trebels, 2005 .

On localized potential spaces

A. Carbery, G. Gasper, W. Trebels, 1986 .

Norm inequalities for fractional integrals of Laguerre and Hermite expansions

G. Gasper, W. Trebels, 2000 .

THE PRINCIPLE OF SUBORDINATION AND COMPARISON THEOREMS FOR APPROXIMATION PROCESSES OF ABEL-BOUNDED ORTHOGONAL EXPANSIONS

W. Trebels, 1983 .

Generalized Lipschitz conditions and Riesz derivatives on the space of Bessel potentials

W. Trebels, 1971 .

On asymptotics for a class of radial Fourier transforms

E. Liflyand, W. Trebels, 1998 .

Fractional powers of operators, K-functionals, Ulyanov inequalities

U. Westphal, W. Trebels, 2010 .

OnL1-criteria for quasi-radial Fourier multipliers with applications to some anisotropic function spaces

W. Trebels, H. Dappa, 1983 .

On the approximation behavior of the riesz means in Lp(Rn)

W. Trebels, 1976 .

Hilbert transforms, fractional integration and differentiation

P. Butzer, W. Trebels, 1968 .

On the Comparison of Approximation Processes in Hilbert Spaces

P. Butzer, R. Nessel, W. Trebels, 1972 .

A unified approach to inequalities for K-functionals and moduli of smoothness

B. Opic, S. Tikhonov, Amiran Gogatishvili, 2023, Mathematische Zeitschrift.