Approximation theory

Known as: Approximation theory/proofs, Chebyshev approximation, Tchebyscheff approximation

In mathematics, approximation theory is concerned with how functions can best be approximated with simpler functions, and with quantitatively…

Papers overview

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2016

We derive closed-form expressions for the poles and zeros of approximate fractional integrator/differentiator filters, which…

2009

The objective of this paper is to present some extensions of several classes of Stancu type linear positive operators of…

1991

An adaptive approach to FIR (finite impulse response) filter design is applied to a fully general complex specification, showing…

1990

The design of allpasses with group delays approximating a desired function is discussed. The method is based on a representation…

1989

A gauge transformation of the minimal-coupling Hamiltonian for a non-relativistic hydrogen atom is induced by a generating…

1985

A unified treatment is given of numerical methods based on the Lagrangian function for solving semi-infinite programming problems…

1978

This paper is concerned with Chebyshev approximation by linear functions to complex-valued data. The problem is nonlinear, and we…

1969

1969

The problem of simultaneous Chebyshev approximation of a set F of uniformly bounded, real-valued functions on a compact interval…

1967

Optical emissions produced in collisions of protons and hydrogen atoms incident on nitrogen molecules studied in 1200 to 6000…