| 期刊全稱 | Banach Algebras with Symbol and Singular Integral Operators | | 影響因子2023 | Naum Yakovlevich Krupnik | | 視頻video | http://file.papertrans.cn/181/180528/180528.mp4 | | 學科分類 | Operator Theory: Advances and Applications | | 圖書封面 |  | | 影響因子 | About fifty years aga S. G. Mikhlin, in solving the regularization problem for two-dimensional singular integral operators [56], assigned to each such operator a func- tion which he called a symbol, and showed that regularization is possible if the infimum of the modulus of the symbol is positive. Later, the notion of a symbol was extended to multidimensional singular integral operators (of arbitrary dimension) [57, 58, 21, 22]. Subsequently, the synthesis of singular integral, and differential operators [2, 8, 9]led to the theory of pseudodifferential operators [17, 35] (see also [35(1)-35(17)]*), which are naturally characterized by their symbols. An important role in the construction of symbols for many classes of operators was played by Gelfand‘s theory of maximal ideals of Banach algebras [201. Using this the- ory, criteria were obtained for Fredholmness of one-dimensional singular integral operators with continuous coefficients [34 (42)], Wiener-Hopf operators [37], and multidimensional singular integral operators [38 (2)]. The investigation of systems of equations involving such operators has led to the notion of matrix symbol [59, 12 (14), 39, 41]. This notion plays an esse | | Pindex | Book 1987 |
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