Almost-universal integral quadratic forms: an effective solution of a problem of Ramanujan
Event details
| Date | 03.12.2019 |
| Hour | 15:15 › 16:35 |
| Speaker | Jacek Bochnak |
| Location | |
| Category | Conferences - Seminars |
Description: ALMOST-UNIVERSAL INTEGRAL QUADRATIC FORMS : AN EFFECTIVE SOLUTION OF A PROBLEM OF RAMANUJAN The object of the talk is to present several results ( obtainend jointly with B.K.OH ) that yield an effective methods for deciding whether a positive-defined integral quadratic form is almost-universal ,that is ,whether it represents all large positive integers. In this way we obtain the final and definitive solution to a problem first addressed and investigated by Ramanujan over 100 years ago.
Special attention is given to 2 -anisotropic quaternary almost-universal forms, representing the main difficulty in the solution of the problem.
Special attention is given to 2 -anisotropic quaternary almost-universal forms, representing the main difficulty in the solution of the problem.
Practical information
- Informed public
- Free
Organizer
- Eva Bayer
Contact
- Monique Kiener