Bonn Topology Group

General Information - Members - Activities - Topology Seminar - Graduiertenkolleg

Program of the topology seminar in previous semesters:

WS2010-2011
SS2011
WS2010-2011
SS2010
WS2009-2010
SS2009
WS2008-2009
SS2008
WS2007-2008
SS2007
WS2006-2007
SS2006
WS2005-2006
SS2005
WS2004-2005
SS2004
WS2003-2004

WS2011-2012

31 January 2012
TILMAN BAUER (Amsterdam): Unstable cohomology operations and formal plethories
24 January 2012
ALEXANDER HEß (Bonn): Factorable groups, homology, and applications to generalized Thompson groups
17 January 2012
LENNART MEIER (Bonn): Module spectra over real K-theory and TMF
10 January 2012
MARTIN LANGER (Bonn): On the cohomology of certain crystallographic groups
13 December 2011
NOE BARCENAS (Bonn): Stable cohomotopy and an observation in analysis
6 December 2011
MARTIN FLUCH (Bielefeld): Classifying spaces with virtually cyclic stabilisers for certain infinite cyclic extensions
29 November 2011
RUI REIS (Bonn): Manifold calculus and Vassiliev's h-principle
22 November 2011
PATRICK DEHORNOY (Caen): News from Garside theory
Abstract
15 November 2011
BIRGIT RICHTER (Hamburg): Determinants and higher divided powers
8 November 2011
DAVID ROSENTHAL (St. John's University): Coarse Structures on Groups
1 November 2011
no seminar (public holiday)
25 October 2011
MICHAEL JOACHIM (Münster): On the Gromov-Lawson-Rosenberg Conjecture for specific finite groups
18 October 2011
IRAKLI PATCHKORIA (Bonn): On the algebraic classification of module spectra
11 October 2011
WILLIAM G. DWYER (Notre Dame, MPI): Bockstein Algebras
Abstract

SS2011

12 July 2011
XIN LI (MÜNSTER): K-theory for C*-algebras attached to rings, groups and semigroups
5 July 2011
DAVID GEPNER (Regensburg): Multiplicative transformations of additive invariants and the uniqueness of the cyclotomic trace
28 June 2011
HARRY ULLMAN (Sheffield): The equivariant stable homotopy theory of isometries
21 June 2011
THOMAS M. FIORE (University of Michigan-Dearborn, MPIM): Euler Characteristics of Categories and Homotopy Colimits
Abstract
14 June 2011
no seminar (because of Pentecost holidays)
7 June 2011
no seminar (because of the summer school Algebra, Topology and Fjords)
31 May 2011
NILES JOHNSON (University of Georgia, MPIM): Homotopical Brauer Groups
24 May 2011
QAYUM KHAN (Notre Dame): Involutions on tori with isolated fixed points
Abstract
17 May 2011
DIARMUID CROWLEY (HIM Bonn): Some new calculations for the Gromoll filtration
Abstract
10 May 2011
ANDY BAKER (Glasgow): Loop spaces with polynomial cohomology
3 May 2011
GEORGIOS RAPTIS (Osnabrück): Derivator K-Theory
26 April 2011
JOHANNES EBERT (Bonn): The h-principle for spaces of long manifolds, K-homology and the Atiyah-Singer Index formula
19 April 2011
CLARA LÖH (Regensburg): Functorial semi-norms on singular homology and (in)flexible manifolds
12 April 2011
JUSTIN NOEL (MPIM Bonn): \pi_*^C HZ: some elementary computations in equivariant (Bredon) homology and cohomology
5 April 2011
no seminar (because of an administrative meeting)

WS2010-2011

25 January 2011
ARKADIY SKOPENKOV (Moscow State University and the Independent University of Moscow): The classification of embeddings below the metastable dimension
18 January 2011
VESNA STOJANOSKA (Northwestern): Duality and topological modular forms
11 January 2011
PAVLE BLAGOJEVIC (Belgrad): From Grünbaum mass partition problems to the equivariant stable topology
14 December 2010
WOLFGANG STEIMLE (Bonn): Obstructions to stably fibering manifolds
7 December 2010
WOLFGANG LÜCK (Bonn): Constructing infinite, finitely generated, residually finite torsion groups with positive first L^2-Betti number
30 November 2010
CHRISTIAN WEGNER (Bonn): The K-theoretic Farrell-Jones conjecture for CAT(0)-groups
23 November 2010
CHRISTIAN KASSEL (Strasbourg): A cohomological invariant for groups coming from quantum group theory
16 November 2010
TIBOR MACKO (Bonn): The additivity of the rho-invariant and periodicity in topological surgery
9 November 2010
BRUNO VALLETTE (Université de Nice, MPIM): Homotopy Batalin-Vilkovisky algebras
2 November 2010
MARTIN STOLZ (Bergen): Equivariant structures for smash powers
26 October 2010
MARTIN LANGER (Bonn): Dyer-Lashof operations in Tate cohomology of finite groups
19 October 2010
– kein Vortrag wegen Hirzebruch-Vorlesung –
12 October 2010
ANDREW RANICKI (Edinburgh, MPIM): Aspects of quadratic forms in the work of Hirzebruch and Atiyah – the director's cut

SS2010

20 July 2010
CONSTANZE ROITZHEIM (Glasgow): Monoidality of Exotic Models
13 July 2010
JOHN HARPER (Lausanne): On a Whitehead theorem for topological Quillen homology of algebras and modules over operads
6 July 2010
JOHN KLEIN (Wayne State): Smoothing Theory Revisited
29 June 2010
STEFAN GILLE (LMU München, Bonn): Chow motives and Rost nilpotence
22 June 2010
HANS-WERNER HENN (Strasbourg): The rational homotopy of the K(2)-local sphere and the chromatic splitting conjecture for the prime 3 and level 2
15 June 2010
CRAIG WESTERLAND (Melbourne): The stable topology of moduli spaces of principal bundles
8 June 2010
LIONEL SCHWARTZ (Paris): A formula of G. Andrews and stable homotopy theory
1 June 2010
CHRISTIAN SCHLICHTKRULL (Bergen): Higher topological Hochschild homology of Thom spectra
25 May 2010
no seminar (Pentecost)
18 May 2010
BERNHARD HANKE (TU München): Große und kleine Gruppenhomologie
11 May 2010
MIA DOLLERUP (Aarhus, Bonn): Topological K-theory of the free loop space of a projective space
4 May 2010
STEFFEN SAGAVE (Bonn): Group completion of structured diagram spaces
27 April 2010
SØREN BOLDSEN (Bonn): Improved homological stability for mapping class groups
20 April 2010
DON STANLEY (Regina, MPIM): Complete invariants of t-structures
13 April 2010
MICHAEL EISERMANN (Stuttgart): Invarianten endlichen Typs von Knoten und Flächen im Raum

WS2009-2010

2 February 2010,
MARTIN OLBERMANN (MPIM): Involutions with half-dimensional fixed point set (in particular on S^6)
26 January 2010,
RALPH COHEN (Stanford): String topology, field theories and Hochschild homology.
19 January 2010,
DAVID AYALA (Copenhagen): Geometric cobordism categories.
12 January 2010,
no seminar.
22 December 2009,
no seminar.
15 December 2009,
JUSTIN NOEL (Strasbourg): The chromatic filtration and rigidifying E-infinity structures up to homotopy.
8 December 2009,
TEIMURAZ PIRASHVILI (Leicester, MPIM): Hochschild cohomology and triangulated categories.
1 December 2009,
BENOIT FRESSE (Lille): Modules over operads, iterated bar complexes and homology theories.
24 November 2009,
no seminar (Workshop on Rigidity at the HIM).
17 November 2009,
MATTHIAS WENDT (Freiburg): A¹-Homotopy Theory and Algebraic Groups.
10 November 2009,
WOLFGANG LÜCK (Münster): Introduction to and new results about the Farrell-Jones Conjecture.
3 November 2009,
DIERK SCHLEICHER (Jacobs-University Bremen): A question of Euler and a generalization of a Theorem of Thurston concerning iterations of transcendental maps.
27 October 2009,
STEFFEN SAGAVE (Bonn): Algebraic K-theory of logarithmic S-algebras.
20 October 2009,
KONRAD WALDORF (Berkeley, MPIM): Multiplicative Gerbes and Chern-Simons Theory.
13 October 2009,
TAKUYA SAKASAI (Tokyo Institute of Technology): Lagrangian mapping class groups from group homological point of view.

SS2009

21 July 2009,
STEFAN BAUER (Bielefeld): Eigentliche Abbildungen zwischen Fréchet-Räumen.
14 July 2009,
PETER TEICHNER (University of California, MPIM Bonn): Field theory and cohomology.
7 July 2009,
JEFFREY GIANSIRACUSA (Oxford): Framed 2-discs, formality, and handlebodies.
30 June 2009,
JOHN R. KLEIN (Wayne State University): Periodicity and duality.
23 June 2009,
RICK JARDINE (University of Western Ontario): Pointed torsors and Galois groups.
16 June 2009,
RAINER VOGT (Osnabrück): The classifying space functor as a derived left adjoint and applications.
26 May 2009,
GERALD GAUDENS (Bonn): Structural properties of the cohomology of spaces.
19 May 2009,
MATTHIAS KRECK (HIM Bonn): Exotic spheres and the Kervaire invariant.
12 May 2009,
OSCAR RANDAL-WILLIAMS (Oxford): Monoids of moduli spaces of manifolds.
5 May 2009,
MARKUS BANAGL (Heidelberg): Singuläre Räume, Poincaré-Komplexe und Stringtheorie.
21 April 2009,
JÉRÔME SCHERER (UA Barcelona/MPIM): Model approximations and homological algebra.
14 April 2009,
IAN HAMBLETON (McMaster, MPIM): The surgery assembly map and KO-homology.

WS2008-2009

3 February 2009,
HAAKON BERGSAKER (Oslo): The multiplicative structure of the topological cyclic homology of the sphere spectrum.
27 January 2009,
ARNE WEINER (Bonn): Morita theory of stable model categories via naive ring spectra.
20 January 2009,
ANDRES ANGEL (Bonn): Cobordism of orbifolds.
13 January 2009,
ERIK PEDERSEN (Copenhagen): Assembly maps.
6 January 2009,
HANNO VON BODECKER (Bochum): On the f-invariant - an index theoretical approach.
16 December 2008,
ULRICH BUNKE (Regensburg): Axiomatics and uniqueness for smooth cohomology theories.
9 December 2008,
BRITA NUCINKIS (Southampton): Cohomological finiteness conditions in soluble groups.
2 December 2008,
CHRISTOPHE CAZANAVE (Polytechnique/Paris 13): Homotopy theory of Atiyah-Hitchin schemes.
25 November 2008,
CHRISTIAN BÄR (Potsdam): Fiber integration for Cheeger-Simons characters.
18 November 2008,
MARCO SCHLICHTING (Baton Rouge/MPI Bonn): The Mayer-Vietoris principle for higher Grothendieck-Witt groups of schemes.
11 November 2008,
DANIEL MÜLLNER (Bonn): Construction of chiral manifolds.
4 November 2008,
JOHANNES EBERT (Bonn): Index theory and Madsen-Tillmann spectra.
28 October 2008,
OLIVER BAUES (Karlsruhe/Bonn): Aspherical homogeneous manifolds.
21 October 2008,
JOHN HARPER (Notre Dame/EPFL): Bar constructions and Quillen homology of modules over operads.
14 October 2008,
GEREON QUICK (Münster): Etale Homotopietheorie.

SS2008

15 July 2008,
GONCALO TABUADA (Lisboa): Higher K-theory via universal invariants.
8 July 2008,
TAKUJI KASHIWABARA (Institut Fourier, Grenoble): K_*(Ω ^∞Σ ^∞X;Z/p) as a functor of K_*(X).
1 July 2008,
QAYUM KHAN (Vanderbilt): The Nil-Nil theorem in algebraic K-theory.
10 June 2008,
NIKO NAUMANN (Regensburg): Motivic Landweber exactness.
3 June 2008,
ARKADIY SKOPENKOV (Moscow State and Independent University Moscow): Embeddings of non-simply connected 4-manifolds in 7-space.
20 May 2008,
ARTHUR BARTELS (Münster): Topological rigidity for CAT(0)-groups.
13 May 2008,
No seminar.
6 May 2008,
PASCAL LAMBRECHTS (Louvain): Rational homology of embedding spaces.
29 April 2008,
MARKUS SPITZWECK (Regensburg): Slices of motivic Landweber spectra.
22 April 2008,
SADOK KALLEL (Lille, MPIM): The Topology of Finite Subset Spaces.
15 April 2008,
PAOLO SALVATORE (Roma 2 Tor Vergata): A topological version of the cyclic Deligne conjecture.
8 April 2008,
BJØRN JAHREN (Oslo): Free topological involutions on S¹ x Sⁿ.

WS2007-2008

5 February 2008,
MAX KAROUBI (Jussieu): Twisted K-theory, old and new.
29 January 2008,
CHRISTIAN AUSONI (Bonn): On rational algebraic K-theory.
22 January 2008,
JULIA SINGER (Bonn): Commutative multiplications on Moore spectra.
15 January 2008,
DAVID ROSENTHAL (St. John's University): On the algebraic K-theory of groups with finite asymptotic dimension.
18 December 2007,
JEAN FASEL (EPFL Lausanne): Euler classes of algebraic vector bundles.
11 December 2007,
CLARK BARWICK (University of Oslo): Operator categories for homotopy coherent algebra.
4 December 2007,
ANDREW RANICKI (University of Edinburgh): A composition formula for manifold structures.
27 November 2007,
IAN HAMBLETON (McMaster University): Aspherical 2-complexes and 4-manifolds
20 November 2007,
NAFAA CHBILI (Monastir University / MPIM Bonn): On equivariant Khovanov homology.
6 November 2007,
TIBOR MACKO (Universität Münster): On fake lens spaces.
30 October 2007,
CLARA LÖH (Universität Münster): Isomorphisms in l¹-homology.
23 October 2007,
MICHAEL POLYAK (Technion, Haifa / MPIM Bonn): Lines intersecting knots and finite type knot invariants.
16 October 2007,
GEORG BIEDERMANN (MPIM Bonn): Homotopy nilpotent groups.

SS2007

10 July 2007,
RALPH KAUFMANN (University of Connecticut / MPIM): Graphen, Operaden und deren Algebren.
3 July 2007,
DAVID BARNES (University of Sheffield): An Algebraic Model for Rational O(2)-Equivariant Spectra.
26 June 2007,
STEFFEN SAGAVE (University of Oslo): Higher multiplicative structures in the homology of differential graded algebras.
19 June 2007,
JOHANNES EBERT (University of Oxford): On the homology of the Deligne-Mumford space.
12 June 2007,
JOACHIM GRUNEWALD (Universität Bonn): Operations on Nil-terms.
5 June 2007,
ANDREAS HEIDER (Universität Bonn): One or two results from Morita theory of stable model categories.
22 May 2007,
FRANÇOIS-XAVIER DEHON (Université de Nice): Unstable algebras, generalized cohomology theories, and realizability problems.
15 May 2007,
BIRGIT RICHTER (Universität Hamburg): K-Theorie bipermutativer Kategorien und virtuelle 2-Vektorbündel.
8 May 2007,
VOLKER PUPPE (Universität Konstanz): Involutionen auf 3-Mannigfaltigkeiten und binäre, selbstduale Codes
24 April 2007,
GREGORY ARONE (University of Virginia, MPIM): Chain rule in calculus of functors.
17 April 2007,
PASCAL LAMBRECHTS (Université Catholique de Louvain): The rational homology of spaces of smooth embeddings from two calculi of functors viewpoint.
10 April 2007,
DIARMUID CROWLEY (Universität Bonn): Automorphisms of odd dimensional manifolds and l_2q+1(Z[π]).
3 April 2007,
WOLFGANG LÜCK (Universität Münster): The Farrell-Jones Conjecture and its applications.

WS2006-2007

6 February 2007,
GEOFFREY POWELL (Université Paris 13): The Singer functors revisited
30 January 2007,
HOSSEIN ABBASPOUR (MPIM): String Topology, from a symplectic point of view
23 January 2007,
CARSTEN SCHULTZ (TU Berlin): Kohomologieringe komplexer Unterraumarrangements
16 January 2007,
MATTHIAS KRECK (Universität Bonn): Äquivariante Kohomologie und Poincaré Dualität
9 January 2007,
HANS-WERNER HENN (Université de Strasbourg): K(2)-local homotopy theory at the prime 2
19 December 2006,
MARKUS BANAGL (Universität Heildelberg): Jüngste Entwicklungen in der Schnitthomologie
12 December 2006,
THOMAS M. FIORE (University of Chicago): Jacobians of Riemann Surfaces with Parametrized Boundary
5 December 2006,
OLIVER RÖNDIGS (Universität Osnabrück): The motivic J-homomorphism
28 November 2006,
CONSTANZE ROITZHEIM (Universität Bonn): Starrheit der K-lokalen stabilen Homotopiekategorie
21 November 2006,
NASKO KARAMANOV (MPIM): On K(2) local homotopy theory and Hopkins Picard Group Pic_2
14 November 2006,
AURÉLIEN DJAMENT (Université Paris 13): Grassmannsche Funktorkategorien und Krullfiltrierung
7 November 2006,
MARTIN MARKL (Academy of Sciences of the Czech Republic): Natural differential operators and graph complexes
31 October 2006,
JENNIFER SCHULTENS (University of California at Davis, MPIM): Stabilisierung und Amalgamation von Heegaardzerlegungen
24 October 2006,
BEN C. WALTER (University of Purdue, MPIM): Lie coalgebras of graphs

SS2006

11 July 2006,
KEIVAN MALLAHI-KARAI (Universität Bonn): Relative growth of subgroups in arithmetic groups
4 July 2006,
JUAN WANG (Universität Bonn): An unstable splitting of the free loop space of a suspension
27 June 2006,
GAEL COLLINET (Université de Strasbourg): On the homology of the group G₂(Z[1/2])
20 June 2006,
JOHN R. KLEIN (Wayne State University): Strings, Poincare duality and homotopy invariance
13 June 2006,
FRITZ GRUNEWALD (Universität Düsseldorf): Linear representations of the automorphism group of a free group and of the mapping class group
30 May 2006,
GERD LAURES (Universität Bochum): Bordism-like theories
23 May 2006,
BERNARDO URIBE (Universitad de los Andes): Orbifold string topology
16 May 2006,
ANDREAS THOM (Universität Göttingen): L² Betti numbers and cohomology for von Neumann algebras
9 May 2006,
CHRISTOPH LAMM: Dedekind-Summen und Knotentheorie
2 May 2006,
URS SCHREIBER (Universität Hamburg): On the String 2-Group
25 April 2006,
MIGUEL XICOTENCATL (Cinestav, Mexico - Universität Bonn): Computations and operations in orbifold string topology
18 April 2006,
JEFFREY GIANSIRACUSA (Oxford University): Mapping class groups of 4-manifolds

WS2005-2006

7 February 2006,
RICHARD WEIDMANN (Universität Frankfurt): Faltungen und Nielsen-Äquivalenz
31 January 2006,
CHRISTINE VESPA (University Paris 13): The functor category Fquad associated to quadratic spaces over F₂
24 January 2006,
IMMA GALVEZ CARILLO (London Metropolitan University): Witten genus and quasimodular forms
17 January 2006,
TIBOR MACKO (Universität Münster): Automorphism spaces of projective spaces and lens spaces
10 January 2006,
BENJAMIN HIMPEL (Universität Bonn) : The spectral flow of the odd signature operator coupled to a path of connections
13 December 2005,
ANDRE HENRIQUEZ (Universität Münster): A Lie algebra for the String group
6 December 2005,
RAINER VOGT (Universität Osnabrück): Interchange, E_n-spaces, and applications
29 November 2005,
JOACHIM GRUNEWALD (Universität Münster): The behavior of Nil-Groups under Localization
22 November 2005,
ARNE WEINER (Universität Bonn) : Symmetric Spectra and Morava K-theories
15 November 2005,
MATTHIAS KÜNZER (RWTH Aachen): Heller triangulated categories
8 November 2005,
DAVE BENSON (University of Aberdeen) : Cohomology of groups and duality
25 October 2005,
JENS HORNBOSTEL (Universität Regensburg) : Beta-elements and divided congruences
18 October 2005,
RYAN BUDNEY (MIPM) : Topology of spaces of knots in dimension 3

SS2005

12 July 2005,
DAVID J. GREEN (Universität Wuppertal) : Computing cohomology rings of finite groups
5 July 2005,
CONSTANTIN TELEMAN (University of Cambridge) : 2D Semi-simple Topological Field Theories
28 June 2005,
MIGUEL XICOTENCATL (Cinestav, Mexico - Universität Bonn) : Orbifold String Topology
21 June 2005,
PAUL GOERSS (Northwestern University) : Filtrations of the moduli space of formal groups and the stable homotopy groups of spheres
7 June 2005,
ROLAND FRIEDRICH (MPIM, Bonn) : From moduli spaces of Riemann surfaces to random paths
31 May 2005,
GEORG BIEDERMANN (University of Western Ontario) : Homotopy theory of functors
24 May 2005,
TEIMURAZ PIRASHVILI (Razmadze Mathematical Institute / Bielefeld / MPIM Bonn) : Comparison between Hochschild, Shukla and MacLane cohomology
10 May 2005,
HANS-WERNER HENN (Université Strasbourg, MPIM) : Picard groups in K(1)-local and K(2)-local homotopy theory
3 May 2005,
DAVID CHATAUR (Université de Lille 1) : On a mod-p analogue of the Bousfield-Peterson-Smith spectral sequence
26 April 2005,
NORA GANTER (Uni. of Illinois at Urbana-Champaign) : Orbifold Geschlechter und K(n)-lokale Spektren
19 April 2005,
FERNANDO MURO (MPIM Bonn) : The localization theorem in cohomology of categories
12 April 2005,
JEAN-PHILIPPE JOURDAN (Université de Lille 1) : Homotopy invariance of configuration spaces
29 March 2005,
MARK BEHRENS (MIT) : Buildings, Elliptic curves, and the stable homotopy groups of spheres

WS2004-2005

9. February 2005,
FERIT DENIZ (Universität Köln) : Lie Gruppen vom topologischen Standpunkt
1. February 2005,
FRIDOLIN ROTH (Universität Bonn) : Lusternik-Schnirelman-Category and Euclidean configuration spaces
24. January 2005,
ELKE MARKERT (Notre Dame) : Ein Spektrum für ko aus euklidischen Quantum Feldtheorien
18. January 2005,
MARTIN LANGER (Universität Bonn) : Realizability of modules over Tate cohomology
11. January 2005,
THOMAS BARTSCH (Universität Giessen) : Konfigurationsräume, Transfer, und Lösungen nichtlinearer partieller Differentialgleichungen
21. December 2004,
BALAZS VISY (Universität Bonn) : Graph complexes
14. December 2004,
MARCO SCHMIDT (Universität Münster) : Simplicial Volume and L²-Betti Numbers
7. December 2004,
DMITRI PANOV (MPIM Bonn) : Polyhedral Kaehler Manifolds
30. November 2004,
MARTIN LUSTIG (Université d'Aix-Marseille III/MPIM Bonn) : Teichmüller-Geodätische im Culler-Vogtmann-Raum via Faltungen von train tracks
23. November 2004,
BJÖRN SCHUSTER (Universität Wuppertal) : Morava K-theory of classifying spaces
16. November 2004,
HENNING KRAUSE (Universität Padderborn) : Smashing localizations and the algebraic telescope conjecture
9. November 2004,
ERWANN LANNEAU (MPIM Bonn) : Moduli spaces of quadratic differentials
2. November 2004,
MARKUS SZYMIK (Universität Bochum) : Symmetries of 4-manifolds
26. October 2004,
OLIVER ROENDIGS (Universität Bielefeld) : Modules over motivic cohomology
19. October 2004,
SEMEN SADETOV (Don State Technical University) : The symplectic structure of Beresin-Kirillov-Kostant-Souriau on the orbits of the coadjoint representation is the differntial of a rational 1-form
12. October 2004,
DAN BURGHELEA (Ohio-State/MPIM Bonn) : An invariant for non simply connected manifolds

SS2004

27. Juli 2004,
FRANÇOIS-XAVIER DEHON (Nice): Cohomology of mapping spaces and division functors : an overview
20. Juli 2004,
MICHAEL FARBER (Durham/MPI): Topology of configuration spaces and problems of robotics
13. Juli 2004,
WALTER NEUMANN: 3-Manifolds and singularities of splice type
6. Juli 2004,
CHRISTINE LESCOP (UJF Grenoble): Vassiliev invariants and Chern-Simons-Theory
29. Juni 2004,
JOCHEN ABHAU (Bonn): Berechnungen der Homologie von Abbildungsklassengruppen und Modulräumen Riemmannscher Flächen
15. Juni 2004,
ALEXANDER NENASHEV (Bielefeld): On the Witt groups of projective bundles: geometric reasoning
8. Juni 2004,
GEORG BIEDERMANN (Bonn): Interpolation categories of homology theories
25. May 2004,
BERNARDO URIBE (U. Michigan/z.ZT. MPI): Differential characters on orbifolds and string connections
18. May 2004,
MAMUKA JIBLADZE (MPI Bonn): Secondary derived functors and the E₃ term of the Adams spectral sequence
11. May 2004,
JOHN ROGNES (Oslo): A homological approach to topological cyclic theory
4. May 2004,
CARL-FRIEDRICH BÖDIGHEIMER (Bonn): Goodwillie derivative of the identity functor
27. April 2004,
OTMAR VENJAKOB (Heidelberg): Charakteristische Elemente in nicht-kommutativer Iwasawa-Theorie

WS2003-2004

3. February 2004,
JAN SCHRÖER (Leeds): Irreduzible Komponenten von Modulvarietäten
27. January 2004,
STEFFEN SAGAVE (Bonn): Algebraische K-Theorie von Modellkategorien
20. January 2004,
GUNTHER KRAUSS (Bonn): Symmetrische Produkte von lokalen Koeffizientensystemen
13. January 2004,
BENOIT FRESSE (Lille): The bar construction of an E-infinity algebra
16. December 2003,
JULIA SINGER (Münster): Analogien zwischen Knotentheorie und Iwasawatheorie
9. December 2003,
LUC MENICHI (Angers): Batalin-Vilkovisky algebras and cyclic cohomology of Hopf algebras
2. December 2003,
JOHANNES EBERT (Bonn): On the moduli space of abelian differentials
25. November 2003,
FRANK HERRLICH (Karlsruhe): Origamikurven in Modulräumen
18. November 2003,
SADOK KALLEL (Lille): Rational maps, Configurations and String Topology
11. November 2003,
C. B. THOMAS (Cambridge/MPI): Contact structures on Fake Lens Spaces
4. November 2003,
GERALD GAUDENS (Bonn): Results on N. Kuhn's realization conjectures
28. October 2003,
MICHAEL JOACHIM (Bonn): On the Gromov-Lawson-Rosenberg Conjecture for (Z/2)^2
21. October 2003,
TORSTEN LANGER: Das Pontrjagin-Produkt in der Homologie des Abbildungsraumes vom Torus in die 3-Sphäre