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020 _a9783031091483
040 _cIIT Kanpur
041 _aeng
082 _a515.7
_bW666f2
100 _aWillem, Michel
245 _aFunctional analysis [2nd ed.]
_bfundamentals and applications
_cMichel Willem
250 _a2nd ed.
260 _bBirkhauser
_c2022
_aSwitzerland
300 _axv, 251p
440 _aCornerstones
490 _a/ edited by Steven G. Krantz
520 _aThis textbook presents the principles of functional analysis in a clear and concise way. The first three chapters describe the general notions of distance, integral, and norm, as well as their relations. Fundamental examples are provided in the three chapters that follow: Lebesgue spaces, dual spaces, and Sobolev spaces. Two subsequent chapters develop applications to capacity theory and elliptic problems. In particular, the isoperimetric inequality and the Pólya-Szegő and Faber-Krahn inequalities are proved by purely functional methods. The epilogue contains a sketch of the history of functional analysis in relation to integration and differentiation. Starting from elementary analysis and introducing relevant research, this work is an excellent resource for students in mathematics and applied mathematics. The second edition of Functional Analysis includes several improvements as well as the addition of supplementary material. Specifically, the coverage of advanced calculus and distribution theory has been completely rewritten and expanded. New proofs, theorems, and applications have been added as well for readers to explore.
650 _aMathematics
942 _cBK
999 _c567315
_d567315