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Direct methods in the calculus of variations /
A comprehensive discussion on the existence and regularity of minima of regular integrals in the calculus of variations and of solutions to elliptic partial differential equations and systems of the second order. While direct methods for the existence of solutions are well-known and were widely-used...
| Clasificación: | Libro Electrónico |
|---|---|
| Autor principal: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
River Edge, NJ :
World Scientific,
©2003.
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| Temas: | |
| Acceso en línea: | Texto completo |
MARC
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| 100 | 1 | |a Giusti, Enrico. | |
| 245 | 1 | 0 | |a Direct methods in the calculus of variations / |c Enrico Giusti. |
| 246 | 3 | 0 | |a Calculus of variations |
| 260 | |a River Edge, NJ : |b World Scientific, |c ©2003. | ||
| 300 | |a 1 online resource (vii, 403 pages) | ||
| 336 | |a text |b txt |2 rdacontent | ||
| 337 | |a computer |b c |2 rdamedia | ||
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| 504 | |a Includes bibliographical references (pages 377-398) and index. | ||
| 588 | 0 | |a Print version record. | |
| 520 | |a A comprehensive discussion on the existence and regularity of minima of regular integrals in the calculus of variations and of solutions to elliptic partial differential equations and systems of the second order. While direct methods for the existence of solutions are well-known and were widely-used in the 20th century, the regularity of the minima was always obtained by means of the Euler equation as a part of the general theory of partial differential equations. In this work, using the notion of the quasi-minimum introduced by Giaquinta and the author, the direct methods are extended to the regularity of the minima of functionals in the calculus of variations, and of solutions to partial differential equations. This unified treatment offers a substantial economy in the assumptions, and permits a deeper understanding of the nature of the regularity and singularities of the solutions. The volume is essentially self-contained, and requires only a general knowledge of the elements of Lebesgue integration theory. | ||
| 505 | 0 | |a Introduction -- ch. 1. Semi-classical theory. 1.1. The maximum principle. 1.2. The bounded slope condition. 1.3. Barriers. 1.4. The area functional. 1.5. Non-existence of minimal surfaces. 1.6. Notes and comments -- ch. 2. Measurable functions. 2.1. L[symbol] spaces. 2.2. Test functions and mollifiers. 2.3. Morrey's and Campanato's spaces. 2.4. The lemmas of John and Nirenberg. 2.5. Interpolation. 2.6. The Hausdorff measure. 2.7. Notes and comments -- ch. 3. Sobolev spaces. 3.1. Partitions of unity. 3.2. Weak derivatives. 3.3. The Sobolev spaces W[symbol]. 3.4. Imbedding theorems. 3.5. Compactness. 3.6. Inequalities. 3.7. Traces. 3.8. The values of W[symbol] functions. 3.9. Notes and comments -- ch. 4. Convexity and semicontinuity. 4.1. Preliminaries. 4.2. Convex functional. 4.3. Semicontinuity. 4.4. An existence theorem. 4.5. Notes and comments -- ch. 5. Quasi-convex functional. 5.1. Necessary conditions. 5.2. First semicontinuity results. 5.3. The Quasi-convex envelope. 5.4. The Ekeland variational principle. 5.5. Semicontinuity. 5.6. Coerciveness and existence. 5.7. Notes and comments -- ch. 6. Quasi-minima. 6.1. Preliminaries. 6.2. Quasi-minima and differential quations. 6.3. Cubical quasi-minima. 6.4. L[symbol] estimates for the gradient. 6.5. Boundary estimates. 6.6. Notes and comments -- ch. 7. Hölder continuity. 7.1. Caccioppoli's inequality. 7.2. De Giorgi classes. 7.3. Quasi-minima. 7.4. Boundary regularity. 7.5. The Harnack inequality. 7.6. The homogeneous case. 7.7. w-minima. 7.8. Boundary regularity. 7.9. Notes and comments -- ch. 8. First derivatives. 8.1. The difference quotients. 8.2. Second derivatives. 8.3. Gradient estimates. 8.4. Boundary estimates. 8.5. w-minima. 8.6. Hölder continuity of the derivatives (p = 2). 8.7. Other gradient estimates. 8.8. Hölder continuity of the derivatives (p ≠ 2). 8.9. Elliptic equations. 8.10. Notes and comments -- ch. 9. Partial regularity. 9.1. Preliminaries. 9.2. Quadratic functionals. 9.3. The second Caccioppoli inequality. 9.4. The case F = F(z) (p = 2). 9.5. Partial regularity. 9.6. Notes and Comments -- ch. 10. Higher derivatives. 10.1. Hilbert regularity. 10.2. Constant coefficients. 10.3. Continuous coefficients. 10.4. L[symbol] estimates. 10.5. Minima of functionals. 10.6. Notes and comments. | |
| 590 | |a eBooks on EBSCOhost |b EBSCO eBook Subscription Academic Collection - Worldwide | ||
| 650 | 0 | |a Calculus of variations. | |
| 650 | 6 | |a Calcul des variations. | |
| 650 | 7 | |a MATHEMATICS |x Calculus. |2 bisacsh | |
| 650 | 7 | |a MATHEMATICS |x Mathematical Analysis. |2 bisacsh | |
| 650 | 7 | |a Calculus of variations |2 fast | |
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