Résumé: Dans une lettre à Quillen datant des années 80, Deligne a proposé un programme conjectural dont le but ultime est de relever la formule de Grothendieck-Riemann-Roch en degré 1, en un isomorphisme de fibrés en droites, avec une dépendance
In algebraic dynamics, we wish to understand the integer sequence given by the degrees of iterates of a dominant rational self-map. Typical examples include the Fibonacci sequence and other linear recurrence sequences, though not all such degree sequences satisfy a
In my talk, I will introduce several sets of central elements in the universal enveloping algebra U(gl_N) and explain the relationships between them using average value of the gl-weight system as an example. As a consequence, we obtain a proof
Abstract: A D-finite series is a power series over the rational numbers that satisfies a linear differential equation with polynomial coefficients. Reducing a D-finite series modulo a prime number one often obtains an algebraic power series in positive characteristic. For
Résumé : Je vais expliquer comment les algèbres amassées, puis la théorie des représentations, peuvent servir pour réaliser certains espaces de configurations. Je me concentrerai sur l'espace \(M_{0,n}\) des configurations de n points distincts sur la droite projective, qui est
Une métrique asymptotiquement conique de Calabi–Yau est une métrique kählérienne à courbure de Ricci nulle, dont l’allure à l’infini ressemble à un cône de Calabi–Yau. Un travail récent de Conlon–Hein montre qu’une variété AC de Calabi–Yau à cône asymptotique donné
Abstract: We prove a classification of families of analytic p-divisible groups on adic spaces S over Qp in terms of Hodge–Tate triples on S, generalizing a theorem of Fargues. From this, for S a perfectoid space, we construct an analytic
Abstract: Let F be a p-adic field. We consider representations of Arthur type of a classical group G over F. By use of the Endoscopic Classification, Moeglin gave an explicit way to construct Arthur packets when G is a symplectic
Abstract: In 1974, Honda proved the p-curvature conjecture for order one differential equations with rational coefficients over a number field. He demonstrated that in this setting, the p-curvature conjecture was equivalent to a theorem due to Kronecker, providing a local-global
Abstract: The talk will introduce the F-conjecture, which states that the Mori cone of the moduli space of genus g stable curves ‾Mg,n is generated by 1-dimensional strata. We will see that the question can be formulated on any Hassett space and
