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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

An algebraic p-adic L-function for ordinary families / Une fonction L p-adique algébrique pour les familles ordinaires

Saha, Jyoti Prakash 11 June 2014 (has links)
Dans cette thèse, nous construisons des fonctions L p-adique algébriques pour les familles de représentations galoisiennes attachées aux familles p-adique analytiques de représentations automorphes en utilisant le formalisme des complexes de Selmer. Ce résultat est obtenu principalement en effectuant une modification des complexes de Selmer pour s’assurer que nous traitons avec des complexes parfaits et démontrer un théorème de contrôle pour les facteurs d'Euler locaux aux places en dehors de p. Le théoréme de contrôle pour les facteurs d'Euler locaux est obtenu par l’étude de la variation de la monodromie sous spécialisations purs des familles p-adiques de représentations galoisiennes restreintes aux groupes de décomposition en dehors de p. Cela nous permet de démontrer un théorème de contrôle pour les fonctions algébriques p-adique que nous construisons pour les familles de Hida de formes paraboliques ordinaires et les représentations automorphes ordinaires pour les groupes unitaires définies. Pour les familles de Hida de formes paraboliques ordinaires, nous construisons un fonction L p-adique algébrique de deux variables et formulons une conjecture la reliant à la fonction L p-adique analytique construite par Emerton, Pollack et Weston. En utilisant des résultats de Kato, Skinner et Urban, nous montrons cette conjecture dans certains cas particuliers. / In this thesis, we construct algebraic p-adic L-functions for families of Galois representations attached to p-adic analytic families of automorphic representations using the formalism of Selmer complexes. This is achieved mainly through making a modification of the Selmer complex to ensure that we deal with perfect complexes and proving a control theorem for the local Euler factors at places not lying above p. The control theorem for local Euler factors is obtained by studying the variation of monodromy under pure specializations of p-adic families of Galois representations restricted to decomposition groups at places of residue characteristic different from p. This allows us to prove a control theorem for the algebraic p-adic L-functions that we construct for Hida families of ordinary cusp forms and ordinary automorphic representations for definite unitary groups. For the Hida family of ordinary cusp forms, we construct a two-variable algebraic p-adic L-function and formulate a conjecture relating it with the analytic p-adic L-function constructed by Emerton, Pollack and Weston. Using results due to Kato, Skinner and Urban, we prove this conjecture in some special cases.
2

Bernstein--Sato Ideals and the Logarithmic Data of a Divisor

Daniel L Bath (10724076) 05 May 2021 (has links)
We study a multivariate version of the Bernstein–Sato polynomial, the so-called Bernstein–Sato ideal, associated to an arbitrary factorization of an analytic germ <i>f - f</i><sub>1</sub>···<i>f</i><sub>r</sub>. We identify a large class of geometrically characterized germs so that the <i>D</i><sub>X,x</sub>[<i>s</i><sub>1</sub>,...,<i>s</i><sub>r</sub>]-annihilator of <i>f</i><sup>s</sup><sub>1</sub><sup>1</sup>···<i>f</i><sup>s</sup><sub>r</sub><sup>r</sup> admits the simplest possible description and, more-over, has a particularly nice associated graded object. As a consequence we are able to verify Budur’s Topological Multivariable Strong Monodromy Conjecture for arbitrary factorizations of tame hyperplane arrangements by showing the zero locus of the associated Bernstein–Sato ideal contains a special hyperplane. By developing ideas of Maisonobe and Narvaez-Macarro, we are able to find many more hyperplanes contained in the zero locus of this Bernstein–Sato ideal. As an example, for reduced, tame hyperplane arrangements we prove the roots of the Bernstein–Sato polynomial contained in [−1,0) are combinatorially determined; for reduced, free hyperplane arrangements we prove the roots of the Bernstein–Sato polynomial are all combinatorially determined. Finally, outside the hyperplane arrangement setting, we prove many results about a certain <i>D</i><sub>X,x</sub>-map ∇<sub><i>A</i></sub> that is expected to characterize the roots of the Bernstein–Sato ideal.

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