Results 11 to 20 of about 584,030 (179)
Trigonometric approximation by Nörlund type means in $L^p$-norm [PDF]
Journal of Mathematical Analysis and Applications, 2002 summary:We show that the same degree of approximation as in the theorems proved by L. Leindler [Trigonometric approximation in $L^p$-norm, J. Math. Anal. Appl. 302 (2005), 129--136] and P.
Szal, Bogdan +2 more
core +3 more sources
L2 approximation with trigonometric n-nomials [PDF]
Journal of Approximation Theory, 1973 We compare the degree of approximation to L2(−π, π) by nth degree trigonometric polynomials, with the degree of approximation by trigonometric n-nomials, which are linear combinations, with constant (complex) coefficients, of any 2n + 1 members of the ...
Byrnes, J.S
core +2 more sources
Trigonometric Approximation in Fractal Image Coding
Radioengineering, 2001 In this paper is presented a new approach in fractal image codingbased on trigonometric approximation. The least square approximationmethod is used for approximation of blocks in standard fractal imagecompression algorithm.
M. Candik
doaj +1 more source
On New Proofs of Inequalities Involving Trigonometric Functions [PDF]
, 2000 In the note, some new proofs for inequalities invoving trigonometric functions are ...
Qi, Feng +3 more
core +6 more sources
Three Inequalities Involving Hyperbolically Trigonometric Functions [PDF]
, 2003 In the short note, by using mathematical induction and infinite product representations of the cosine function, hyperbolic sine function and hyperbolic cosine function, three inequalities for the cosine function, hyperbolic sine function and hyperbolic ...
Zhao, Jian-Wei +2 more
core +6 more sources
Nonlinear Approximation by Trigonometric Sums [PDF]
Journal of Fourier Analysis and Applications, 1995 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
DeVore, R.A., Temlyakov, V.N.
openaire +2 more sources
Approximation in trigonometric Lipschitz spaces
, 2021 The approximation by generalized trigonometric polynomials for Lipschitz defined functions in certain groups depends on some properties of the group defined metric. Metrics which allow this approximation are called Lipschitz compatible. In this work we give for certain class of groups, conditions under which Lipschitz compatible metrics are boundedly ...
Bernabé Loranca, María Beatriz +3 more
openaire +3 more sources
Nonperiodic Trigonometric Polynomial Approximation [PDF]
Journal of Scientific Computing, 2013 The suitable basis functions for approximating periodic function are periodic, trigonometric functions. When the function is not periodic, a viable alternative is to consider polynomials as basis functions. In this paper we will point out the inadequacy of polynomial approximation and suggest to switch from powers of $x$ to powers of $\sin(px)$ where ...
openaire +3 more sources
Approximation of classes of Poisson integrals by Fejer means
Математичні Студії, 2023 The paper is devoted to the investigation of problem of approximation of continuous periodic functions by trigonometric polynomials, which are generated by linear methods of summation of Fourier series.
O. Rovenska
doaj +3 more sources
Trigonometric Induced Multivariate Smooth Gauss–Weierstrass Singular Integrals Approximation
Mathematics, 2023 In this article, we employ the uniform and Lp, 1 ...
George A. Anastassiou
doaj +1 more source