Results 61 to 70 of about 31,852 (174)

Chebyshev Polynomials on Compact Sets [PDF]

open access: yesPotential Analysis, 2013
The author proves that if a compact set \(K\) in the complex plane contains a smooth Jordan curve on its outer boundary, then the minimal norm of the \(n\)-th Chebyshev polynomial \(T_n\) on \(K\) satisfies \(\|T_n\|_K\geq (1+\beta)\mathrm{cap}(K)^n\), for some \(\beta>0\) where \(\mathrm{cap}(K)\) is the logarithmic capacity of \(K\).
openaire   +2 more sources

Some Identities Involving Chebyshev Polynomials [PDF]

open access: yesMathematical Problems in Engineering, 2015
The main purpose of this paper is using the combinatorial method and algebraic manipulations to study some sums of powers of Chebyshev polynomials and give several interesting identities. As some applications of these results, we obtained several divisibility properties involving Chebyshev polynomials.
openaire   +2 more sources

Chebyshev polynomials are not always optimal [PDF]

open access: yes
The problem is that of finding among all polynomials of degree at most n and normalized to be 1 at c the one with minimal uniform norm on Epsilon. Here, Epsilon is a given ellipse with both foci on the real axis and c is a given real point not contained ...
Fischer, Bernd, Freund, Roland
core   +1 more source

Prediction of compliant wall drag reduction, part 1 [PDF]

open access: yes
Computer codes developed to test Bushnell's compliant wall drag reduction model are discussed. One code computes the evolution of mean velocity profiles during the period between bursts as forced by an imposed large-scale pressure pulse due to earlier ...
Orszag, S. A.
core   +1 more source

On the coefficients of differentiated expansions of ultraspherical polynomials [PDF]

open access: yes
A formula expressing the coefficients of an expression of ultraspherical polynomials which has been differentiated an arbitrary number of times in terms of the coefficients of the original expansion is proved.
Karageorghis, Andreas   +1 more
core   +1 more source

On Fractional Orthonormal Polynomials of a Discrete Variable

open access: yesDiscrete Dynamics in Nature and Society, 2015
A fractional analogue of classical Gram or discrete Chebyshev polynomials is introduced. Basic properties as well as their relation with the fractional analogue of Legendre polynomials are presented.
I. Area   +3 more
doaj   +1 more source

Diffusion Approximation to Neutron Transport Equation with First Kind of Chebyshev Polynomials

open access: yesSüleyman Demirel Üniversitesi Fen-Edebiyat Fakültesi Fen Dergisi, 2015
: The first kind of Chebyshev polynomials are used for the series expansion of the neutron angular flux in neutron transport theory. The first order approximation known as the diffusion approximation is applied to one-dimensional neutron transport ...
Ökkeş EGE   +2 more
doaj  

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