题目：Around Cowling’s conjecture
报告人：Ignacio Vergara（圣彼得堡欧拉国际数学研究所）
时间：2022年5月18日（星期三），16:00-17:30
地点：Zoom会议，会议号：824 7045 6491，会议密码：123399
摘要：Two very important concepts arose from Haagerup’s highly influential work on the reduced C*-algebra of the free group: weak amenability and the Haagerup property. It is an open problem to determine whether weak amenability with Cowling-Haagerup constant 1 implies the Haagerup property. This is often referred to as Cowling’s conjecture. In this talk, I will give an overview of this question, and I will discuss a recent progress in this direction: Every countable weakly amenable group with Cowling-Haagerup constant 1 admits a proper cocycle for a uniformly bounded representation on a subspace of an L1 space.
会议链接：https://zoom.us/j/82470456491?pwd=dGswU3d3RGd1L1d4a3ZvSXdnakVkUT09
Around Cowling’s conjecture.jpg
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