(Photographer: Rudolf Scharlau)
[ Invited Speakers | Talks | Pictures | Schedule | Participants | Contacts ]
(Photographer: Rudolf Scharlau)
It's over! It was the aim of this conference to bring together mathematicians from Real Algebra, Valuation Theory, and Quadratic Form Theory, stressing the many interactions between these disciplines. We believe that this concept has worked very well, and we have had much positive feedback from participants. The organizers would like to thank the speakers and everybody else who contributed to making this conference a success.
Here is the original announcement
The conference was organised by
Karim Johannes Becher,
Tim Netzer,
Daniel Plaumann,
and
Claus Scheiderer.
It was supported by the Deutsche Forschungsgemeinschaft and by the Zukunftskolleg at the University of Konstanz.
| Ricardo Baeza (Universidad de Talca, Chile) | |
| Wulf-Dieter Geyer (Universität Erlangen-Nürnberg, Germany) | |
| Julia Hartmann (RWTH Aachen, Germany) | |
| Detlev Hoffmann (University of Nottingham, UK) | |
| Igor Klep (Univerza v Ljubljana, Slovenia) | |
| Jochen Koenigsmann (University of Oxford, UK) | |
| Monique Laurent (CWI Amsterdam, Netherlands) | |
| Peter J. Roquette (Universität Heidelberg, Germany) | |
| Konrad Schmüdgen (Universität Leipzig, Germany) | |
| Jean-Pierre Tignol (Université catholique de Louvain, Belgium) | |
| Lou van den Dries (University of Illinois at Urbana-Champaign, USA) |
| Speaker | Title |
| F. Acquistapace | Positive semidefinite analytic functions |
| R. Baeza | Generalized Hermite Constants |
| H. Bosse | Non-Negative Polynomials that are not Sums of Squares |
| J. Cimpric | A method for computing lowest eigenvalues of symmetric polynomial differential operators by semidefinite programming |
| J. Demeyer | Hilbert's Tenth Problem for function fields over valued fields |
| M. Dickmann | Faithfully quadratic rings |
| R. Flatley | Trace forms of symbol algebras |
| W.-D. Geyer | Patching |
| P. Gładki | Certain quotient spaces of spaces of orderings and their inverse limits |
| J. Hartmann | Local Global Principles for Quadratic Forms |
| D. Hoffmann | Something old and something new about u |
| M. Karoubi | Periodicity in hermitian K-theory |
| I. Klep | Free real algebraic geometry |
| M. Knebusch | Semirings with bounds |
| J. Koenigsmann | Fields with the Galois group of Q |
| M. Laurent | Optimization over polynomials with sums of squares and moment matrices |
| N. Lavi | Ganzstellensatz for open sets in real closed fields |
| H. Nguyen | Polynomials non-negative on non-compact subsets of the plane |
| A. Pfister | An elementary and constructive proof of Hilbert's theorm on ternary quartics |
| J. Povh | Ncsostools: a computer algebra system for symbolic and numerical computation with nc polynomials |
| R. Quarez | Effective tridiagonal determinantal representation for univariate polynomials and real roots counting |
| P. Roquette | Arf invariants of quadratic forms in historical perspective |
| J. Savchuk | Positivstellensätze for some algebras of matrices |
| K. Schmüdgen | Positivity, Sums of Squares and Positivstellensätze for *-Algebras |
| A. Smith | Fast Positivity Testing using Bernstein Expansion |
| T. Theobald | Valuations and tropical bases |
| M. Thomas | Parameterization and the rational points of definable sets |
| J.-P. Tignol | Valuations on central simple algebras |
| T. Unger | Torsion in Witt groups and sums of hermitian squares |
| S. Wagner | A decision problem for real multivariate polynomials |
| L. van den Dries | Immediate extensions of H-fields |
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Image: Universität Konstanz - Photographer: Michael Latz
Conference schedule and abstracts (pdf)