SCHOOL (AND WORKSHOP) ON

HODGE THEORY AND ALGEBRAIC GEOMETRY

TRENTO, AUGUST 31-SEPTEMBER 5, 2009




Third announcement


Lecturers.

E. Looijenga (Universiteit Utrecht, Nl)
C. Voisin (CNRS and IHES – Fr).

Supporting lecturer and tutor.

C. Schnell (University of Illinois at Chicago, USA).

General informations on the School and Workshop.
The School/Workshop is organized by G. Casnati, A.J. Di Scala, R. Notari, S. Salamon. For contacting the organizers send a mail to

geometri [nospam] calvino.polito.it

The School/Workshop is supported by CIRM -Fondazione Bruno Kessler (formerly CIRM-ITC), by GNSAGA-INdAM, by Dipartimento di Matematica-Politecnico di Torino and by the joint Project "Geometria differenziale e analisi globale" cofinanced by Italian MIUR.
The School and the Workshop will take place at

Fondazione Bruno Kessler-IRST
via Sommarive, 18
38050 Povo (Trento) - Italy

Aim of the School.
The School is mainly aimed to Phd students and young researchers in Algebraic Geometry, introducing the participants to research, beginning from a basic level with a view towards the applications and to the most recent results.
From the historical and scientific viewpoint, Hodge theory as developed by Griffiths and Deligne since the 70's is a powerful tool for studying algebraic varieties in characteristic zero. It consists mostly in the study of the (mixed) Hodge structures associated to algebraic varieties, and their variations. The so-called period map allows one to study moduli spaces qualitatively and the natural local systems of cohomology on them. Sometimes it even gives a uniformization of the relevant moduli spaces. Another aspect of Hodge theory is the study of the Hodge conjecture and its variants (generalized Hodge conjecture, variational Hodge conjecture). These two aspects are related via the study of Hodge loci, which are natural subloci of moduli spaces.
The whole subject presents a mixture of topology, complex geometry, Lie group theory and of course algebraic geometry, which is rather fascinating. The best example of this is the fact that the constant local systems underlying variations of Hodge structures are of a topological nature, while the variation of Hodge structure itself and the Hodge bundles can be defined inside algebraic geometry. Hodge theory is increasingly used in the context of Differential Geometry for the calculation of Dolbeault cohomology of manifolds with special structures generalizing Kähler geometry.

Aim of Workshop.
The Workshop is intended to discuss the state of the art in the different aspects of Hodge theory. Up to now the following speakers have confirmed their participation: F. Campana, K. O'Grady, G.P. Pirola, B. van Geemen, G. Sankaran. People interested in delivering a short communication are kindly requested to submit the title and an abstract within August 17th to

geometri [nospam] calvino.polito.it

Schedule.
The School will start on Monday, 31st at 13.00 and it will end on Friday, 4th at 12.30. Workshop will start on Friday 4th at 14.30 and it will end on Saturday 5th at 14.00. On Friday evening a social dinner open to the participants of the School/Workshop will be organized.

Registration.
Participants who do not require financial support are expected to fill in the on line registration form before August, 17th.