J APPROX THEORY
ISSN：0021-9045 E-ISSN：1096-0430 出版商：Academic Press Inc 国家：UNITED STATES 周期：Monthly
| 收录情况 | h-index：44 CiteScore：1.50 |
The Journal of Approximation Theory is devoted to advances in pure and applied approximation theory and related areas. These areas include| among others: • Classical approximation • Abstract approximation • Constructive approximation • Degree of approximation • Fourier expansions • Interpolation of operators • General orthogonal systems • Interpolation and quadratures • Multivariate approximation • Orthogonal polynomials • Padé approximation • Rational approximation • Spline functions of one and several variables • Approximation by radial basis functions in Euclidean spaces| on spheres| and on more general manifolds • Special functions with strong connections to classical harmonic analysis| orthogonal polynomial| and approximation theory (as opposed to combinatorics| number theory| representation theory| generating functions| formal theory| and so forth) • Approximation theoretic aspects of real or complex function theory| function theory| difference or differential equations| function spaces| or harmonic analysis • Wavelet Theory and its applications in signal and image processing| and in differential equations with special emphasis on connections between wavelet theory and elements of approximation theory (such as approximation orders| Besov and Sobolev spaces| and so forth) • Gabor (Weyl-Heisenberg) expansions and sampling theory.
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