Approximation Theory

Inhaltsverzeichnis

• On the best approximation of the operators of differentiation and related questions.
• A generalization of theorems of Korovkin on conditions for and the order of convergence of a sequence of positive operators.
• On the uniform continuity of the operator of best approximation..
• Stetigkeitseigenschaften von Optimierungsaufgaben und lineare Tschebyscheff-Approximation.
• Spline bases in function spaces.
• Saturationstheorie auf kompakten topologischen Gruppen.
• Uniform approximation on closed sets by functions analytic on a Riemann surface.
• Die Ableitungen der algebraischen Polynome bester Approximation.
• Zur Approximationstheorie für Summationsprozesse von Fourier-Entwicklungen in Banach-Räumen: Vergleichssätze und Ungleichungen vom Bernstein-Typ.
• Approximation of functions of several variables by the sums of two functions of a smaller number of variables.
• The convergence of Bergman functions for a decreasing sequence of domains.
• n-parametrige Halbgruppen von Operatoren in der Approximationstheorie.
• On strong approximation of Fourier series.
• On linear juxtaoperators.
• On trigonometric interpolation with equidistant knots.
• Konstruktive Approximationstheorie mit Hilfe von Jacobi-Polynomen und Kugelfunktionen.
• Some decompositions of functional spaces by means of quasi-analytic functions of several variables.
• Zur Theorie der saturierten Approximationsverfahren auf lokalkompakten abelschen Gruppen.
• A comparison approach to direct theorems for polynomial spline approximation.
• Eine Substitutionsmethode zur Bestimmung von Nikolski?-Konstanten 215.
• Interpolating splines.
• On the best approximation of factorized Fourier series.
• On the Riesz means of Fourier-Bessel series.
• Polynomial approximation and structural properties of functions defined on subsets of the complex plane..
• Trigonometric interpolation polynomials which gives best order of approximation among continuously dif-ferentiable functions of certain order.
• Hermite-Fejér interpolation on the Jacobi abscissas 281.
• Problems.