Results 101 to 110 of about 126,693 (204)

Simultaneous approximation by polynomials in Orlicz spaces generated by quasiconvex Young functions

open access: yesKuwait Journal of Science, 2016
In this paper we prove some theorems on simultaneous approximation by trigonometric or algebraic polynomials in Orlicz spaces constructed by Young functions belonging to a reasonably wide class.
huseyin koc
doaj  

A basic triad in Macdonald theory

open access: yesPhysics Letters B
Within the context of wavefunctions of integrable many-body systems, rational multivariable Baker-Akhiezer (BA) functions were introduced by O. Chalykh, M. Feigin and A.
A. Mironov, A. Morozov, A. Popolitov
doaj   +1 more source

Alternating trigonometric polynomials

open access: yesJournal of Approximation Theory, 1987
Set \(t_ k=h_ n+\{k\pi /(n+1)\}\), \(k=0,1,...,2n+1\), \(0\leq h_ ...
openaire   +2 more sources

On large sieve inequalities involving pth powers of trigonometric polynomials

open access: yes, 2022
In this paper, we extend the large sieve type estimates to sums involving pth powers of trigonometric polynomials. An approach to such estimates that does not rely on the usual L^2-technique is given.
Norvidas, Saulius
core  

Algorithms for Various Trigonometric Power Sums

open access: yesAlgorithms
In this paper, algorithms for different types of trigonometric power sums are developed and presented. Although interesting in their own right, these trigonometric power sums arise during the creation of an algorithm for the four types of twisted ...
Victor Kowalenko
doaj   +1 more source

On Some Trigonometrical Polynomials.

open access: yesMATHEMATICA SCANDINAVICA, 1967
Izumi, Masako, Izumi, Shin-Ichi
openaire   +2 more sources

Positive trigonometric polynomials

open access: yes, 2003
We study the boundary of the nonnegative trigonometric polynomials from the algebraic point of view. In particularly, we show that it is a subset of an irreducible algebraic hypersurface and established its explicit form in terms of resultants.
openaire   +2 more sources

Relations between Chebyshev, Fibonacci and Lucas polynomials via trigonometric sums [PDF]

open access: yes
In this paper we derive some new identities involving the Fibonacci and Lucas polynomials and the Chebyshev polynomials of the first and the second kind.
Šćeta, Lamija   +2 more
core   +1 more source

Optical soliton solutions of the unstable nonlinear Schrödinger equation. [PDF]

open access: yesSci Rep
Shabbir S   +4 more
europepmc   +1 more source

Anti-Gaussian quadrature rule for trigonometric polynomials

open access: yes, 2018
An anti-Gaussian quadrature formula is an (n+1)-point formula with algebraic degree of exactness 2n + 1. Its error is equal in magnitude but of opposite sign to that of the n-point Gaussian formula.
Petrovic, Nevena   +2 more
core  

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