研讨班报告

调和分析研讨班:Diameter-free estimates and superorthogonality

发布时间:2026-10-12

中国科学院数学与系统科学研究院

数学研究所

数学科学全国重点实验室

调和分析研讨班

Speaker: 吴澍坤(Indiana University Bloomington)

Inviter: 何伟鲲
Language: English

Title: Diameter-free estimates and superorthogonality

Time & Venue: 2026年10月12日(星期一)15:00-16:00 南楼N913

Abstract: I will discuss how order and orthogonality yield a near-optimal three-fold additive energy bound for points on convex curves and diameter-free decoupling for the parabola. A related geometric observation gives a short proof of the Guth–Wang–Zhang cone reverse square function estimate. I will then introduce an abstract ordered superorthogonality theorem and explain its applications to diameter-free and sharp reverse square function estimates for the cone. This is based on joint work with Adam Cushman and Ciprian Demeter. The work is AI-assisted.



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