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Hilbert transforms on Coxeter groups and groups acting on buildings

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  • UserXiaoqi Lu (University of Glasgow)
  • ClockThursday 03 July 2025, 16:00-16:30
  • HouseExternal.

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TGAW01 - Crossed products and groupoid C*-algebras

Cotlar identities were used as a tool to show the $L_p$ ($1 < p < \infty$) boundedness of Hilbert transforms on the real line. In 2017, Mei and Ricard first generalized Cotlar identities to the non-commutative setting and showed the $L_p$-boundednesses ($1 < p < \infty$) of Hilbert transforms on free groups. Then in 2022, Gonz{\’a}lez-P{\’e}rez, Parcet and Xia generalized the result on groups acting on $\mathbb{R}$-trees by using a geometric model. In this talk, we will further discuss this topic on Coxeter groups (abstract reflection groups) and groups which admit actions on buildings. This is a joint work with Runlian Xia.

This talk is part of the Isaac Newton Institute Seminar Series series.

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