Arbeitsgemeinschaft Algebra & Topologie

    The "Arbeitsgemeinschaft Algebra & Topologie" takes place every Friday from 10.30 to 12.00 in the "Kleiner Hörsaal" (Mathematisches Institut, Rheinsprung 21) unless there is a Basel-Freiburg-Strassburg Seminar.

     

    Programm Wintersemester 2004/05

      22. Oktober: No Seminar

      29. Oktober: Giordano Favi (Universität Basel): Essential Dimension and Central Simple Algebras (abstract)

      5. November: Adrien Dubouloz (Université Grenoble I): Combinatorial Classification of Danielewski Surfaces (abstract)

      12. November: Anna Wienhard (Universität Basel): Bounded Cohomology and Group Homomorphisms (abstract)

      19. November: Philippe Bonnet (Universität Basel): Families of Derivations and their Kernels (abstract)

      26. November: Dies Academicus.

      3. Dezember: Paul Balmer (ETH Zürich): Quadratic Forms: from Fields to triangulated Categories (abstract)

      10. Dezember: EUCOR-Seminar Basel-Freiburg-Strasbourg in Freiburg: (program)

        - Konstantin Styrkas (MPI Bonn): Regular Representation on the Big Cell and Analogues of Peter-Weyl and Borel-Weil Theorems for the Big Projective Modules in Category O.
        - Anna Lyakhovskaya (EPF Lausanne): Deformation Quantization of Coadjoint orbits and the Shapovalov Pairing.
        - Hanspeter Kraft (Universität Basel): Uber eine Arbeit von Hermite und Gleichungen vom Grad 5 und 6.

      17. Dezember: Laurent Manivel (Université Grenoble I): Reduction Varieties for Severi and Scorza Varieties (abstract)

      7. Januar: Stéphane Vénéreau (Universität Basel): A Proof of the Abhyankar-Moh Theorem (following Nowicki and Richman) (abstract)

      14. Januar: No seminar

      21. Januar: Stefan Gille (ETH Zürich): Motivic Decomposition of some Algebraic Varieties (abstract)

      28. Januar: Sebastian Baader (Universität Basel): On the Gordian Complex of Knots (abstract)

      4. Februar: Jan Draisma (Universität Basel): Counting Components of the Null-Cone on Tuples (abstract)

      11. Februar: Jan Sanders (Vrije Universiteit Amsterdam): Geometry and Integrability (abstract)

     

    Programm Sommersemester 2004/05

      8. April: Theo Bühler (ETH Zürich): On a Conjecture of Vadim Kaimanovich (abstract)

      15. April: Karine Sorlin (Université d'Amiens): Subfield Symmetric Spaces for Finite Special Linear Groups (abstract)

      22. April: Pierre-Marie Poloni (Université de Dijon): Embeddings of a Family of Danielewski Hypersurfaces (abstract)

      29. April: Olivier Guichard (EPF Lausanne): The local Structure of the Space of Representations (abstract)

      6. Mai: Auffahrt

      13. Mai: Bernd Sturmfels (ETH Zürich): Tropical Geometry (abstract)

      20. Mai: Mihai Halic (Universität Zürich): Quotients of Affine Spaces for Actions of Reductive Groups (abstract)

      27. Mai: Jérémy Blanc (Université de Genève): Cojugacy Classes of Affine and Birational Automorphisms of K^n and P^n(K) (abstract)

      3. Juni: Marc Burger (ETH Zürich): Lattices in Products of Trees, Old and New (abstract)

      10. Juni: Eva Feichtner (ETH Zürich): On the Geometry of De Concini-Procesi Models (abstract)

      17. Juni: Francois Fillastre (Université Toulouse III): From Spaces of Polygons to Spaces of Polyhedra, following Bavard, Ghys and Thurston (abstract)

      24. Juni: Gerald Schwarz (Brandeis University): Compressions of Group Actions (abstract)

      1. Juli: Karin Baur (University of California, San Diego): Admissible Character in the Sense of Lynch, and a Normal Form of Richardson Elements for Parabolic Subalgebras (abstract)

      8. Juni: No Seminar (Zürich-Geneva Symposium in the memory of Armand Borel)