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Computational aspects of modular forms and Galois representations : how one can compute in polynomial time the value of Ramanujan's tau at a prime /
"Modular forms are tremendously important in various areas of mathematics, from number theory and algebraic geometry to combinatorics and lattices. Their Fourier coefficients, with Ramanujan's tau-function as a typical example, have deep arithmetic significance. Prior to this book, the fas...
| Clasificación: | Libro Electrónico |
|---|---|
| Otros Autores: | , |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Princeton :
Princeton University Press,
©2011.
|
| Colección: | Annals of mathematics studies ;
no. 176. |
| Temas: | |
| Acceso en línea: | Texto completo |
MARC
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| 245 | 0 | 0 | |a Computational aspects of modular forms and Galois representations : |b how one can compute in polynomial time the value of Ramanujan's tau at a prime / |c edited by Jean-Marc Couveignes and Bas Edixhoven. |
| 260 | |a Princeton : |b Princeton University Press, |c ©2011. | ||
| 300 | |a 1 online resource (xi, 425 pages) : |b illustrations | ||
| 336 | |a text |b txt |2 rdacontent | ||
| 337 | |a computer |b c |2 rdamedia | ||
| 338 | |a online resource |b cr |2 rdacarrier | ||
| 490 | 1 | |a Annals of mathematics studies ; |v no. 176 | |
| 520 | |a "Modular forms are tremendously important in various areas of mathematics, from number theory and algebraic geometry to combinatorics and lattices. Their Fourier coefficients, with Ramanujan's tau-function as a typical example, have deep arithmetic significance. Prior to this book, the fastest known algorithms for computing these Fourier coefficients took exponential time, except in some special cases. The case of elliptic curves (Schoof's algorithm) was at the birth of elliptic curve cryptography around 1985. This book gives an algorithm for computing coefficients of modular forms of level one in polynomial time. For example, Ramanujan's tau of a prime number P can be computed in time bounded by a fixed power of the logarithm of P. Such fast computation of Fourier coefficients is itself based on the main result of the book: the computation, in polynomial time, of Galois representations over finite fields attached to modular forms by the Langlands program. Because these Galois representations typically have a nonsolvable image, this result is a major step forward from explicit class field theory, and it could be described as the start of the explicit Langlands program. The computation of the Galois representations uses their realization, following Shimura and Deligne, in the torsion subgroup of Jacobian varieties of modular curves. The main challenge is then to perform the necessary computations in time polynomial in the dimension of these highly nonlinear algebraic varieties. Exact computations involving systems of polynomial equations in many variables take exponential time. This is avoided by numerical approximations with a precision that suffices to derive exact results from them. Bounds for the required precision--in other words, bounds for the height of the rational numbers that describe the Galois representation to be computed--are obtained from Arakelov theory. Two types of approximations are treated: one using complex uniformization and another one using geometry over finite fields. The book begins with a concise and concrete introduction that makes its accessible to readers without an extensive background in arithmetic geometry. And the book includes a chapter that describes actual computations"-- |c Provided by publisher. | ||
| 520 | |a "This book represents a major step forward from explicit class field theory, and it could be described as the start of the 'explicit Langlands program'"-- |c Provided by publisher. | ||
| 504 | |a Includes bibliographical references (pages 403-421) and index. | ||
| 505 | 0 | |a Introduction, main results, context / Bas Edixhoven -- Modular curves, modular forms, lattices, Galois representations / Bas Edixhoven -- First description of the algorithms / Jean-Marc Couveignes and Bas Edixhoven -- Short introduction to heights and Arakelov theory / Bas Edixhoven and Robin de Jong -- Computing complex zeros of polynomials and power series / Jean-Marc Couveignes -- Computations with modular forms and Galois representations / Johan Bosman -- Polynomials for projective representations of level one forms / Johan Bosman -- Description of X₁(5l) / Bas Edixhoven -- Applying Arakelov theory / Bas Edixhoven and Robin de Jong -- An upper bound for Green functions on Riemann surfaces / Franz Merkl -- Bounds for Arakelov invariants of modular curves / Bas Edixhoven and Robin de Jong -- Approximating V[subscript f] over the complex numbers / Jean-Marc Couveignes -- Computing V[subscript f] modulo p / Jean-Marc Couveignes -- Computing the residual Galois representations / Bas Edixhoven -- Computing coefficients of modular forms / Bas Edixhoven. | |
| 588 | 0 | |a Print version record. | |
| 546 | |a In English. | ||
| 590 | |a eBooks on EBSCOhost |b EBSCO eBook Subscription Academic Collection - Worldwide | ||
| 590 | |a ProQuest Ebook Central |b Ebook Central Academic Complete | ||
| 590 | |a JSTOR |b Books at JSTOR Demand Driven Acquisitions (DDA) | ||
| 650 | 0 | |a Galois modules (Algebra) | |
| 650 | 0 | |a Class field theory. | |
| 650 | 6 | |a Modules galoisiens. | |
| 650 | 6 | |a Théorie du corps de classes. | |
| 650 | 7 | |a MATHEMATICS |x Advanced. |2 bisacsh | |
| 650 | 7 | |a MATHEMATICS |x Geometry |x Algebraic. |2 bisacsh | |
| 650 | 7 | |a MATHEMATICS |x Algebra |x Intermediate. |2 bisacsh | |
| 650 | 7 | |a MATHEMATICS |x Number Theory. |2 bisacsh | |
| 650 | 7 | |a Class field theory |2 fast | |
| 650 | 7 | |a Galois modules (Algebra) |2 fast | |
| 700 | 1 | |a Couveignes, Jean-Marc. | |
| 700 | 1 | |a Edixhoven, B. |q (Bas), |d 1962- |1 https://id.oclc.org/worldcat/entity/E39PBJyMkwVVXPB3cCpd9B7T73 | |
| 758 | |i has work: |a Computational aspects of modular forms and Galois representations (Text) |1 https://id.oclc.org/worldcat/entity/E39PCGQtXKh4MTfc7Rcm7xGQG3 |4 https://id.oclc.org/worldcat/ontology/hasWork | ||
| 776 | 0 | 8 | |i Print version: |t Computational aspects of modular forms and Galois representations. |d Princeton : Princeton University Press, ©2011 |z 9780691142012 |w (DLC) 2010053185 |w (OCoLC)687685173 |
| 830 | 0 | |a Annals of mathematics studies ; |v no. 176. | |
| 856 | 4 | 0 | |u https://ebookcentral.uam.elogim.com/lib/uam-ebooks/detail.action?docID=670341 |z Texto completo |
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