A propos de l' espace des modules de fibrés de rang 2 sur une courbe.
À propos de la construction de l'espace de modules des faisceaux semi-stables sur le plan projectif
A quantization procedure of fields based on geometric Langlands correspondence.
A remark on moduli spaces of complete intersections.
A remark on the Picard group of spin moduli space
We describe a number of classes in the Picard group of spin moduli space and determine the relations they satisfy; as an application we show that the Picard group in question contains 4-torsion elements.
A Second Lefschetz Theorem for General Manifold Sections in Complex Projective Space.
A sharp slope inequality for general stable fibrations of curves.
A support theorem for Hilbert schemes of planar curves
Consider a family of integral complex locally planar curves whose relative Hilbert scheme of points is smooth. The decomposition theorem of Beilinson, Bernstein, and Deligne asserts that the pushforward of the constant sheaf on the relative Hilbert scheme splits as a direct sum of shifted semisimple perverse sheaves. We will show that no summand is supported in positive codimension. It follows that the perverse filtration on the cohomology of the compactified Jacobian of an integral plane curve...
A Theorem of Local-Torelli Type.
A Theorem of Versality for Unfoldings of Complex Analytic Foliation Singularities.
A Torelli theorem for moduli spaces of principal bundles over a curve
Let and be compact Riemann surfaces of genus , and let and be nonabelian reductive complex groups. If one component of the coarse moduli space for semistable principal –bundles over is isomorphic to another component , then is isomorphic to .
A variational Torelli theorem for cyclic coverings of high degree
Abelova cena v roce 2018 udělena za Langlandsův program
V článku motivujeme a vysvětlíme základy Langlandsova programu, sítě domněnek propojujících řadu různých oblastí matematiky. Během toho se také setkáme s Riemannovou hypotézou a domněnkou Birche a Swinnerton-Dyera, dvěma ze sedmi problémů tisíciletí vyhlášených Clayovým matematickým institutem.
About -bundles over elliptic curves
Let be a complex algebraic group, simple and simply connected, a maximal torus and the Weyl group. One shows that the coarse moduli space parametrizing -equivalence classes of semistable -bundles over an elliptic curve is isomorphic to . By a result of Looijenga, this shows that is a weighted projective space.
Algebraic and symplectic Gromov-Witten invariants coincide
For a complex projective manifold Gromov-Witten invariants can be constructed either algebraically or symplectically. Using the versions of Gromov-Witten theory by Behrend and Fantechi on the algebraic side and by the author on the symplectic side, we prove that both points of view are equivalent
Algebraic cycles and Hodge theoretic connectivity.
Algebraic loop groups and moduli spaces of bundles
We study algebraic loop groups and affine Grassmannians in positive characteristic. The main results are normality of Schubert-varieties, the construction of line-bundles on the affine Grassmannian, and the proof that they induce line-bundles on the moduli-stack of torsors.
Algebraic Solutions of Differential Equations (p-Curvature and the Hodge Filtration).
Algebraic Surfaces of General Type with Small c... . III.
Algebraic Surfaces of General Type with Small ... . II.