This seminar is an informal forum where members of the DIANA group meet to discuss topics of interest. We meet on a weekly basis. The programme for these meetings will be advertised below, and by email.
If you wish to be added to (or removed from) our email list, please contact tobias.beran@univie.ac.at: subscribe or unsubscribe.
The the seminar takes place every Friday at 09:45 am in SE 07 and streamed via moodle and will be announced by email weekly.
Anyone interested is welcome to attend.
| Date | Speaker | Title |
|---|---|---|
| 19. Mar 2010 | Dr. Hideo Deguchi | Case studies in linear first order hyperbolic equations |
| 26. Mar. 2010 | Nathalie Tassotti | Warped products and General Relativity |
| 02. Apr. 2010 | No seminar | |
| 09. Apr. 2010 | No seminar | |
| 16. Apr. 2010 | Prof. Maximilian Hasler | A "purely" topological approach to Colombeau Type algebras AbstractWe present an approach to Colombeau type algebras which is based on the construction of a topology on the sequence space E^I. The topolgy is constructed by combining in the simplest possible way the topology of the base space E on one hand, and of a growth scale M c R^I on the other hand. (This topology corresponds to the well-known "sharp topology" in the usual cases.) The so-called ideal of "negligible" sequences, the quotient space and the space of "moderate" sequences all arise in a very natural way. Sheaf theoretic and functorial aspects, as well as a variant of microlocal analysis, based on what we call the "singular asymptotic spectrum", can be introduced in a general setting, without the need for knowing how the topology of E is concretely defined (via seminorms, projective or inductive limits, etc.). We don't even use the fact that E is a vector space (which allows to iterate the construction, taking as base space the topological module G(E) over the topological ring of generalized numbers). Some interesting results can be proved in this very general setting, often in a rather elegant algebraic way, and thus apply to all variants of Colombeau type algebras which fit into this scheme. |
| 23. Apr. 2010 | Klaus Kröncke | Comparison geometry |
| 30. Apr. 2010 | Clemens Sämann | The classical and distributional Denjoy integral |
| 07. May 2010 | Christian Spreitzer | The Reznicek Problem - Existence of a Schwartz function with vanishing moments and support contained in the positive half-line |
| 14. May. 2010 | No seminar | |
| 21. May 2010 | Christian Haderer | Singularity theorems and causal structure |
| 28. May 2010 | Simon Rössler | Spectral theory of differential operators on manifolds |
| 04. Jun. 2010 | No seminar | |
| 11. Jun. 2010 | Katharina Brazda | Energy estimates for the elasto-gravitational equations in global seismology |
| 18. Jun. 2010 | Dr. James Grant | Curvature bounds in synthetic geometry |
| 25. Jun. 2010 | Annegret Burtscher | The Hopf-Rinow theorem for length spaces |