Lundi 14 juin 2010
IRMA
The "Joint Seminar in Algebraic and Complex Geometry" is a research seminar, organized by the research groups in Freiburg, Nancy and Strasbourg. The seminar meets roughly twice per semester in Strasbourg, for a full day. There are about four talks per meeting, both by invited guests and by speakers from the organizing universities. We aim to leave ample room for discussions and for a friendly chat.
The talks are open for everyone. Contact one of the organizers if you are interested in attending the meeting. We have some (very limited) funds that might help to support travel for some junior participants.
Conferences will take place in the PAM (Petit Amphi Math).
Conference web site here
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Lundi 14 juin 2010
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10:30 - 11:30
Vincent Koziarz, Nancy
On holomorphic maps between ball quotients
Let X be an irreducible compact quotient of a bounded symmetric domain and f be a holomorphic mapping from X into a compact ball quotientThenMargulis superrigidity implies that f must be constantunless X is itself a ball quotientFrom this perspectiveholomorphic maps between ball quotients play a special roleMoreoverLivnhas constructed interesting examples of surjective holomorphic maps from compact quotients of the 2-ball onto Riemann surfacesBy constructionthese fibrations always have singular fibresThe aim of this talk is to show that more generallythere does not exist any holomorphic regular fibration between ball quotientsThis is a joint work with NMok. -
11:45 - 12:45
Michael Nakamaye, New Mexico
Interpolation on a non-commutative group
We study the distribution of points for the action ofa non-commutative group on a projective varietyThe eventual goal of this work is to supply the geometrical knowledge necessary to prove transcendance results on non-commutative groups The work is joint with Stephane Fischler. -
14:30 - 15:30
Gergely Berczi, Oxford
Thom polynomials and the Green-Griffiths conjecture
The Green-Griffiths conjecture from 1979 says that every projective algebraic variety X of general type contains a certain proper algebraic subvariety Y such that all nonconstant entire holomorphic curves in X must lie inside Y In this talk I explain that for projective hypersurfaces of degree d>dim(X)^6following the strategy of Demailly and Diverio/Merker/Rousseauthis is the consequence of a positivity conjecture in global singularity theory. -
16:00 - 17:00
Paolo Cascini, Imperial College
The Minimal Model Program revisited.
The aim of the Minimal Model Program is to generalize the classification of complex projective surfacesknown in the early 20th centuryto higher dimensional varietiesI will discuss a new approach to this Program.