Extremal Problems in Interpolation Theory, Whitney-Besicovitch Coverings, and Singular Integrals(Monografie Matematyczne)

Whitney-Besicovitch

函数论

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作      者
出  版 社
出版时间
2012年10月30日
装      帧
ISBN
9783034804684
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页      码
322
语      种
英文
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图书简介
In this book we suggest a unified method of constructing near-minimizers for certain important functionals arising in approximation, harmonic analysis and ill-posed problems and most widely used in interpolation theory. The constructions are based on far-reaching refinements of the classical Calder髇?Zygmund decomposition. These new Calder髇?Zygmund decompositions in turn are produced with the help of new covering theorems that combine many remarkable features of classical results established by Besicovitch, Whitney and Wiener. In many cases the minimizers constructed in the book are stable (i.e., remain near-minimizers) under the action of Calder髇?Zygmund singular integral operators.The book is divided into two parts. While the new method is presented in great detail in the second part, the first is mainly devoted to the prerequisites needed for a self-contained presentation of the main topic. There we discuss the classical covering results mentioned above, various spectacular applications of the classical Calder髇?Zygmund decompositions, and the relationship of all this to real interpolation. It also serves as a quick introduction to such important topics as spaces of smooth functions or singular integrals.
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Yale University Library
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