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Topology of Stratified Spaces
Sep 8, 2008 to Sep 12, 2008

Organizer(s)

Greg Friedman, Eugénie Hunsicker, Anatoly Libgober, and Laurentiu Maxim
To apply for funding, you must register by Mon, Jun 30 2008.
Stratified spaces occur naturally in high- and low-dimensional topology, various fields of pure mathematics, including algebraic geometry and number theory, and also in more applied fields, such as the study of configuration spaces for robot motion planning. In recent years, there has been extensive interest and success in expanding to stratified spaces the triumphs of algebraic topology in manifold theory, including the vast progress in the mid-20th century on signatures, characteristic classes, surgery theories, and the special homological properties of nonsingular analytic and algebraic varieties, such as the Kähler package. Yet such extensions from manifold theory to stratified space theory are rarely straightforward; they tend to involve the discovery and study of subtle interactions between local and global behavior. Furthermore, research in these areas turns out to have a rich interaction with the question being addressed by the Analysis of Singular Spaces program running simultaneously at MSRI of how to do analysis on spaces that are not locally Euclidean.

The workshop will be organized into days dedicated to each of the four main themes: topology of complex varieties, signature theory on singular spaces, L^2 and intersection cohomology, and mixed Hodge theory and singularities. Each day except Wednesday will include one introductory talk aimed at audience members from both topology and analysis of singular spaces, and three research talks. There will also be room for some shorter talks by PhD students or recent graduates and for a few talks on Wednesday morning on related subjects that do not fit one of these categories.

A block of rooms has been reserved at the Rose Garden Inn. Reservations may be made by calling 1-800-992-9005 OR directly on their website. Click on Corporate at the bottom of the screen and when prompted enter code MATH (this code is not case sensitive). By using this code a new calendar will appear and will show MSRI rate on all room types available.
The cut-off date for reservations is August 22, 2008.

A block of rooms has been reserved at the Hotel Durant. Please mention the workshop name and reference the following code when making reservations via phone, fax or e-mail only: K00000. The cut-off date for reservations is August 8, 2008. Reservations can not be made on the website. Room Rate $159/ night.

Funding

To apply for funding, you must register by Mon, Jun 30 2008. Click to Register
Students, recent Ph.D.'s, women, and members of underrepresented minorities are particularly encouraged to apply. Funding awards are made typically 6 weeks before the workshop begins. Requests received after the funding deadline are considered only if additional funds become available.
Schedule
Monday, September 08, 2008
9:00AM - 10:00AM Xianzhe Dai An introduction to L^2 cohomology [Video available]
10:30AM - 11:30AM Gilles Carron L2 cohomology of QALE space [Video available]
1:15PM - 2:15PM Les Saper Cohomology of compactifications of locally symmetric spaces [Video available]
2:30PM - 3:30PM Paolo Piazza The signature operator on Witt spaces (joint work with Pierre Albin, Eric Leichtnam and Rafe Mazzeo) [Video available]
Tuesday, September 09, 2008
9:00AM - 10:00AM Markus Banagl The Signature of Singular Spaces and its Refinements to Generalized Homology Theories. [Video available]
10:30AM - 11:30AM Sylvain Cappell Replacement of fixed points of group actions [Video available]
1:15PM - 2:15PM Shmuel Weinberger Stratified Surgery and Functoriality [Video available]
2:30PM - 3:30PM Clinton McCrory The weight filtration for real algebraic varieties [Video available]
4:00PM - 4:30PM Jim Fowler Lattices with torsion and rational homology manifolds [Video available]
4:30PM - 5:00PM Filipp Levikov The (intersection) homology groups of a fibre bundle over a sphere [Video available]
Wednesday, September 10, 2008
9:00AM - 10:00AM Anatoly Libgober Elliptic genus of singular varieties [Video available]
10:30AM - 11:00AM Daniel Matei Cohomology of complements to algebraic plane curves [Video available]
11:00AM - 11:30AM Lee McEwan Monodromy of curves and quasi-ordinary surfaces [Video available]
11:30AM - 12:00PM Mikhail Mazin Leray-type Operators for Stratified Spaces and the Parshin's Reciprocity Law for Residues [Video available]
Thursday, September 11, 2008
9:00AM - 10:00AM Robert Waelder Singular Elliptic Genus of Normal Surfaces [Video available]
10:30AM - 11:30AM Sandor Kovacs Singularities in the Minimal Model Program [Video available]
1:15PM - 2:15PM Shoji Yokura Motivic Characteristic classes of singulare varieties [Video available]
2:30PM - 3:30PM Mark de Cataldo The perverse filtration and the Lefschetz Hyperplane Theorem [Video available]
Friday, September 12, 2008
9:00AM - 10:00AM Ludmil Katzarkov Hodge Structures and Homological Mirror Symmetry [Video available]
10:30AM - 11:30AM Gregory Pearlstein Singularities of Normal Functions [Video available]
1:15PM - 2:15PM Joerg Schuermann Characteristic classes of mixed Hodge modules [Video available]
2:30PM - 3:30PM Matt Kerr Hodge theory of Calabi-Yau fibrations [Video available]
Parent Program(s):
Analysis on Singular Spaces


Questions about this workshop should be sent either by email to
or by regular mail to:
Topology of Stratified Spaces
Mathematical Sciences Research Institute
17 Gauss Way, Berkeley, CA
94720-5070.
USA

The Institute is committed to the principles of Equal Opportunity and Affirmative Action.



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