An extension to rational functions of a theorem of J. L. Walsh on differences of interpolating polynomials
An extremal problem for Bernstein polynomials.
An Implementation of the Method of Ermakov and Zolotukhin for Multidimensional Integration and Interpolation.
An Improved Constant for the Muntz-Jackson Theorem
An inequality for Chebyshev connection coefficients.
An inequality for polynomials with elliptic majorant.
An Inequality for Trigonometric Polynomials
The main result says in particular that if is a trigonometric polynomial of degree n having all its zeros in the open upper half-plane such that |t(ξ)| ≥ μ on the real axis and cₙ ≠ 0, then |t’(ξ)| ≥ μn for all real ξ.
An inequality of Ostrowski type via Pompeiu's mean value theorem.
An integral approximation in three variables.
An integral inequality for convex functions and applications in numerical integration.
An intermediate point property in the quadrature formulas of type Gauss.
An internal characterization of G-spaces
An intoduction to formal orthogonality and some of its applications.
This paper is an introduction to formal orthogonal polynomials and their application to Padé approximation, Krylov subspace methods for the solution of systems of linear equations, and convergence acceleration methods. Some more general formal orthogonal polynomials, and the concept of biorthogonality and its applications are also discussed.
An iterative Clough-Tocher interpolant
An iterative method for solving operator equations
An operator-theoretic approach to theorems of the Pick-Nevanlinna and carathéodory types.
An Operator-Theoretical Approach to Error Estimation.
An optimal 3-point quadrature formula of closed type and error bounds.
An optimal sequential algorithm for the uniform approximation of convex functions on .
An unusual way of solving linear systems
Mediante integrali multipli agevoli per il calcolo numerico vengono espressi il valore assoluto di un determinante qualsiasi e le formule di Cramer.