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AuthorJost, Jรผrgen. author
TitlePostmodern Analysis [electronic resource] / by Jรผrgen Jost
ImprintBerlin, Heidelberg : Springer Berlin Heidelberg : Imprint: Springer, 1998
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Descript XV, 356 p. online resource


What is the title of this book intended to signify, what connotations is the adjective "Postmodern" meant to carry? A potential reader will surely pose this question. To answer it, I should describe what distinguishes the approach to analysis presented here from what has been called "Modern Analysis" by its protagonists. "Modern Analysis" as represented in the works of the Bourยญ baki group or in the textbooks by Jean Dieudonne is characterized by its systematic and axiomatic treatment and by its drive towards a high level of abstraction. Given the tendency of many prior treatises on analysis to degenยญ erate into a collection of rather unconnected tricks to solve special problems, this definitively represented a healthy achievement. In any case, for the deยญ velopment of a consistent and powerful mathematical theory, it seems to be necessary to concentrate solelyon the internal problems and structures and to neglect the relations to other fields of scientific, even of mathematical study for a certain while. Almost complete isolation may be required to reach the level of intellectual elegance and perfection that only a good mathematical theory can acquire. However, once this level has been reached, it might be useful to open one's eyes again to the inspiration coming from concrete exยญ ternal problems


0. Prerequisites -- 1. Limits and Continuity of Functions -- 2. Differentiability -- 3. Characteristic Properties of Differentiable Functions. Differential Equations -- 4. The Banach Fixed Point Theorem. The Concept of Banach Space -- 5. Uniform Convergence. Interchangeability of Limiting Processes. Examples of Banach Spaces. The Theorem of Arzela-Ascoli -- 6. Integrals and Ordinary Differential Equations -- 7. Metric Spaces: Continuity, Topological Notions, Compact Sets -- 8. Differentiation in Banach Spaces -- 9. Differential Calculus in ?d -- 10. The Implicit Function Theorem. Applications -- 11. Curves in ?d. Systems of ODEs -- 12. Preparations. Semicontinuous Functions -- 13. The Lebesgue Integral for Semicontinuous Functions. The Volume of Compact Sets -- 14. Lebesgue Integrable Functions and Sets -- 15. Null Functions and Null Sets. The Theorem of Fubini -- 16. The Convergence Theorems of Lebesgue Integration Theory -- 17. Measurable Functions and Sets. Jensenโ{128}{153}s Inequality. The Theorem of Egorov -- 18. The Transformation Formula -- 19. The Lp-Spaces -- 20. Integration by Parts. Weak Derivatives. Sobolev Spaces -- 21. Hilbert Spaces. Weak Convergence -- 22. Variational Principles and Partial Differential Equations -- 23. Regularity of Weak Solutions -- 24. The Maximum Principle -- 25. The Eigenvalue Problem for the Laplace Operator -- Index of Notation

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