Bernoulli lecture III: Invariants of quadratic forms
Event details
| Date | 13.12.2012 |
| Hour | 17:15 |
| Speaker | Professor Raman Parimala |
| Location | |
| Category | Conferences - Seminars |
The classical invariants of quadratic forms are the dimension, discriminant, Clifford invariant and the signature. These suffice to classify quadratic forms over number fields. Milnor's conjecture, which was proved by Voevodsky, proposes a sequence of successive invariants for quadratic forms with values in Galois cohomology, determining completely the form. We explain how this classification could be used to give bounds over a given field, for the dimensions of quadratic forms with no nontrivial zeros.
Links
Practical information
- General public
- Free
Organizer
- Hélène Esnault (U. Duisburg-Essen), Andrew Kresch (U. Zürich), Bjorn Poonen (MIT), Alexei Skorobogatov (Imperial College London)
Contact
- Rana Gherzeddine