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.

《近似理論雜志》致力于純近似理論、應用近似理論及相關領域的進展。這些領域包括但不限于：

? 經典近似

? 抽象近似

? 構造性近似

? 近似度

? 傅里葉展開

? 算子插值

? 一般正交系統

? 插值和求積

? 多元近似

? 正交多項式

? Padé 近似

? 有理近似

? 一元和多元樣條函數

? 在歐幾里得空間、球面和更一般的流形上用徑向基函數近似

?與經典諧波分析、正交多項式和近似理論（與組合學、數論、表示論、生成函數、形式理論等相對）密切相關的特殊函數

? 實函數或復函數理論、函數論、差分或微分方程、函數空間或諧波分析的近似理論方面

? 小波理論及其在信號和圖像處理以及微分方程中的應用，特別強調小波理論與近似理論元素（如近似階、Besov 和 Sobolev 空間等）之間的聯系

? Gabor（Weyl-Heisenberg）展開和采樣理論。

Journal Of Approximation Theory由Academic Press Inc.出版商出版，收稿方向涵蓋數學 - 數學全領域，此刊是中等級別的SCI期刊，所以過審相對來講不是特別難，但是該刊專業認可度不錯，仍然是一本值得選擇的SCI期刊 。平均審稿速度 較慢,6-12周 ，影響因子指數0.9，該期刊近期沒有被列入國際期刊預警名單，廣大學者值得一試。