Travaux de Laumon
Travaux de Shimura
Travaux de Zink
The diverse Dieudonné theories have as their common goal the classification of formal groups and -divisible groups. The most recent theory is Zink’s theory of displays. A display over a ring R is a finitely generated projective module over the ring of Witt vectors, , equipped with additional structures. Zink has shown that using this notion, more concrete than those previously defined, one can obtain a good theory and prove an equivalence theorem in great generality. I will give an overview of...
Travaux récents de Ju. V. Nesterenko
Travaux récents de M. Artin
Traverso’s Isogeny Conjecture for -Divisible Groups
Treibich-Verdier potentials and the stationary (m)KDV hierarchy.
Tresses, monodromie et le groupe symplectique.
Treuflache Äquivalenzrelationen in der Kategorie der lokal geringten Räume
Triangular Actions on C3.
Triangularization properties of power linear maps and the Structural Conjecture
We discuss several additional properties a power linear Keller map may have. The Structural Conjecture of Drużkowski (1983) asserts that certain two such properties are equivalent, but we show that one of them is stronger than the other. We even show that the property of linear triangularizability is strictly in between. Furthermore, we give some positive results for small dimensions and small Jacobian ranks.
Triangulation in o-minimal fields with standard part map
In answering questions of J. Maříková [Fund. Math. 209 (2010)] we prove a triangulation result that is of independent interest. In more detail, let R be an o-minimal field with a proper convex subring V, and let st: V → k be the corresponding standard part map. Under a mild assumption on (R,V) we show that a definable set X ⊆ Vⁿ admits a triangulation that induces a triangulation of its standard part st X ⊆ kⁿ.
Triangulations and moduli spaces of Riemaann surfaces with group actions.
Triangulations of integral polytopes and Ehrhart polynomials.
Tricanonical Maps of Numerical Godeaux Surfaces.
Trigonal Hyperplane Sections of Projective Surfaces.
Trigonal modular curves
Triple Solids with Sectional Genus three.
Trivial points on towers of curves
In order to study the behavior of the points in a tower of curves, we introduce and study trivial points on towers of curves, and we discuss their finiteness over number fields. We relate the problem of proving that the only rational points are the trivial ones at some level of the tower, to the unboundeness of the gonality of the curves in the tower, which we show under some hypothesis.
Troesch complexes and extensions of strict polynomial functors
We develop a new approach of extension calculus in the category of strict polynomial functors, based on Troesch complexes. We obtain new short elementary proofs of numerous classical -computations as well as new results. In particular, we get a cohomological version of the “fundamental theorems” from classical invariant theory for for big enough (and we give a conjecture for smaller values of ). We also study the “twisting spectral sequence” converging to the extension groups between the...