Journal Of Approximation Theory

Journal Title：Journal Of Approximation Theory

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.

Journal of Approximation Theory 致力于纯粹和应用近似理论及相关领域的进展。这些领域包括：

• 经典近似

• 抽象近似

• 建设性近似

• 近似度

• 傅里叶展开

• 运算符插值

• 一般正交系统

• 插值和求积

• 多元近似

• 正交多项式

• 帕德近似

• 有理逼近

• 一个和多个变量的样条函数

• 在欧几里得空间、球体和更一般的流形上通过径向基函数进行逼近

• 与经典调和分析、正交多项式和逼近理论（与组合学、数论、表示论、生成函数、形式理论等相反）具有密切联系的特殊函数

• 实函数或复函数理论、函数理论、差分或微分方程、函数空间或调和分析的近似理论方面

• 小波理论及其在信号和图像处理中的应用，以及在微分方程中的应用，特别强调小波理论与近似理论元素（例如近似阶数、Besov 和 Sobolev 空间等）之间的联系

• Gabor (Weyl-Heisenberg) 展开和抽样理论。

Journal Of Approximation Theory由Academic Press Inc.出版商出版，收稿方向涵盖数学 - 数学全领域，此刊是中等级别的SCI期刊，所以过审相对来讲不是特别难，但是该刊专业认可度不错，仍然是一本值得选择的SCI期刊 。平均审稿速度较慢,6-12周，影响因子指数0.99，该期刊近期没有被列入国际期刊预警名单，广大学者值得一试。