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Séminaire Doctorants

organisé par l'équipe DOCT

  • Ludovic Felder

    Galois descent for abelian varieties

    6 novembre 2025 - 16:30Salle de conférences IRMA

    An algebraic variety is an object that is defined by the zeroes of a set of polynomials. If the coefficients of those polynomials lie in a field L, we say that the algebraic variety is defined over L. It can be interesting to know if our variety can, in fact, be defined by polynomials with coefficients in a subfield K of L ; if that is the case, we say that the variety descends on K. In this talk I am going to explain some results concerning such questions in the case of an abelian variety.