[ Seminar 2025 | Past Seminars | Related conferences etc. ]
| Date: | June 10 (Tue), 2025, 15:30-16:30 |
| Speaker: | Paolo Ciatti (University of Padua) |
| Title: | Spectral estimates on the Heisenberg group |
| Abstract: [ pdf ] | In this talk we will discuss some estimates concerning the spectral projections of the sub-Laplacian on the Heisenberg group. We will also consider some open problems and formulate a conjecture, providing some motivation for it. |
| Date: | June 11 (Wed), 2025, 14:00-15:00 |
| Speaker: | Valentina Casarino (University of Padua) |
| Title: | Variational inequalities in a nonsymmetric Gaussian framework |
| Abstract: [ pdf ] | In this talk we introduce variation seminorms and consider the variation operator of a nonsymmetric Ornstein--Uhlenbeck semigroup $(H_ t)_{(t> 0)}$, taken with respect to $t$, in $\mathbb{R}^n$. We prove that this seminorm defines an operator of weak type $(1, 1)$ for the invariant measure. The talk is based on joint work with Paolo Ciatti (University of Padua) and Peter Sjögren (Chalmers University). |
© Toshiyuki Kobayashi