Ens

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31

Universit´e Paris Diderot U.F.R. de Math´ematique 9 marsEXAMEN DE M2

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Source URL: www.math.ens.fr

Language: French - Date: 2010-05-06 14:17:23
    32Geometry / Algebra / Abstract algebra / Algebraic geometry / Fano variety / Projective variety / Hyperelliptic curve / Moduli space / DeligneMumford stack / Hypersurface / Ample line bundle / Stack

    MODULI SPACES FOR CERTAIN FANO VARIETIES OLIVIER DEBARRE Abstract. It is yet unknown whether quasiprojective moduli spaces exist for all Fano varieties with finite automorphism groups. In this talk, we will describe a cl

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    Source URL: www.math.ens.fr

    Language: English - Date: 2014-03-30 09:31:34
    33Abstract algebra / Algebra / Mathematics / Algebraic geometry / Homological algebra / Algebraic varieties / Finite fields / Conjectures / Weil conjectures / Projective variety / Smooth scheme / Cohomology

    Introduction The Weil conjectures Threefolds Fourfolds Cubic hypersurfaces over finite fields

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    Source URL: www.math.ens.fr

    Language: English - Date: 2015-09-12 09:28:48
    34Algebra / Mathematics / Representation theory of Lie groups / Lie algebras / Matrix theory / Spectral theory / Lattice / Weight / Jordan normal form / Spectral theory of ordinary differential equations

    A New View on HJLS and PSLQ: Sums and Projections of Lattices Jingwei Chen†,‡ Chengdu Institute of Computer Application, CAS

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    Source URL: perso.ens-lyon.fr

    Language: English - Date: 2017-06-27 04:39:36
    35Geometry / Algebraic geometry / Algebra / Birational geometry / Algebraic varieties / Vector bundles / Cone of curves / Minimal model program / Divisor / Ample line bundle / Projective variety / Rational point

    BEND AND BREAK∗ Olivier Debarre June 25, 2007 Contents 1 Rational curves

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    Source URL: www.math.ens.fr

    Language: English - Date: 2007-06-25 17:48:03
    36Algebra / Mathematics / Linear algebra / Rank / QR decomposition / Matrix / Determinant

    MATHEMATICS OF COMPUTATION Volume 81, Number 279, July 2012, Pages 1487–1511 SArticle electronically published on February 17, 2012 PERTURBATION ANALYSIS OF THE QR FACTOR R

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    Source URL: perso.ens-lyon.fr

    Language: English - Date: 2017-06-27 04:39:37
    37

    DMA – École normale supérieurejanvier 2014 Examen Algèbre 1 Responsable : O. D EBARRE

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    Source URL: www.math.ens.fr

    Language: French - Date: 2014-01-19 10:38:10
      38

      RATIONALITÉ DES VARIÉTÉS ALGÉBRIQUES OLIVIER DEBARRE Résumé. On cherche à paramétrer les solutions, dans un corps K contenant Q, d’une équation polynomiale en n variables à coefficients dans K, par des fracti

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      Source URL: www.math.ens.fr

      Language: French - Date: 2018-05-18 22:36:39
        39Algebra / Abstract algebra / Geometry / Projective geometry / Algebraic surfaces / Polynomials / Quadratic forms / Algebraic geometry / Quadric / Projective variety / Discriminant / Sextic equation

        QUADRATIC LINE COMPLEXES OLIVIER DEBARRE Abstract. In this talk, a quadratic line complex is the intersection, in its Pl¨ ucker embedding, of the Grassmannian of lines in an 4-dimensional projective space with a quadric

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        Source URL: www.math.ens.fr

        Language: English - Date: 2013-09-14 04:31:01
        40Algebra / Geometry / Abstract algebra / Algebraic geometry / Algebraic varieties / Convex geometry / Divisor / Nef line bundle / Projective variety / Abelian variety / Convex cone / Ample line bundle

        CONES OF HIGHER-CODIMENSIONAL CYCLES OLIVIER DEBARRE July 14, 2010 This is joint work with L. Ein, R. Lazarsfeld, and C. Voisin (eprint arXiv:, to appear in Compos. Math.).

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        Source URL: www.math.ens.fr

        Language: English - Date: 2010-07-14 05:23:13
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