时 间:2026年11月19日(周四) 13:00 - 14:30
地 点:线上,腾讯会议号: 340-763-403
报告人:吴波 复旦大学教授
邀请人:徐方军 华东师范大学统计学院
摘 要:
In this paper, we investigate connections between spectral gaps of the Ornstein–Uhlenbeck operator and $L^2$-operators weighted by a density function $F$ on the Gaussian path space. A prominent class of such processes is the family of F-Gaussian processes, which contains fractional Brownian motion $B^H$ with Hurst index $H\in(0,1)$. Furthermore, for the fractional Wiener measure $\mu_H$, we establish that the logarithmic Sobolev inequality associated with the Ornstein–Uhlenbeck Dirichlet form is valid for $H\ge \frac12$. In contrast, the corresponding weak Poincaré inequalities fail in the regime $0
报告人简介:
吴波,复旦大学数学科学学院教授、博士生导师。2007年博士毕业于北京师范大学,2008年至2011年在英国Warwick University做博士后,之后加入复旦大学数学科学学院。在 Ann. Probab.、Prob. The. Relat. Fields、J. Funct. Anal.、 SIAM J. Math. Anal.、Tran. Amer. Math. Soc.、J. Geom. Anal.、Stoch. Proc. App. 等权威期刊发表论文20多篇。