On the comparison of trigonometric convolution operators with their discrete analogues for Riemann integrable functions.
Über die Darstellung holomorpher Funktionen durch Weierstraß- und Weierstraß-Stieltjes-Integrale.
On Nonlinear Condensation Principles with Rates.
Sharp Estimates in Terms of Moduli of Smoothness for Compound Cubature Rules.
A General Approach to Counterexamples in Numerical Analysis.
On the comparison of error bounds for finite difference schemes.
Trigonometric Convolution Operators with Kernels having Alternating Signs and their Degree of Convergence.
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