报告题目：Almost sharp variational inequalities for discrete truncated operators of Stein-Wainger type

报告人：万仁辉副教授，南京师范大学

报告时间：2024年10月9日（周三）14:30-15:30

报告地点：20-202

报告摘要：The studies of discrete analogues in harmonic analysis are motivated by ergodic-theoretic considerations, and by intrinsic interests. In this talk, we will show almost sharp variational inequalities for discrete truncated operator of Stein-Wainger type, which strengthen the previous maximal estimates proved by Krause and Roos (up to a logarithmic loss in scale R); Moreover, some techniques including Hardy-Littlewood circle method、transference principle、Stein and Wainger’s theorem、shifted square function estimates will be mentioned.

报告人简介：万仁辉，南京师范大学数科院副教授，2017年于浙江大学获得博士学位。主要研究兴趣是调和分析及其在流体方程中的应用。