Siyuan Tang

collaborators

2 papers

math.DS2021

Rigidity of joinings for time-changes of unipotent flows on quotients of Lorentz groups

Siyuan Tang

Let $u_{X}^{t}$ be a unipotent flow on $X = S O (n, 1) /Γ$ , $u_{Y}^{t}$ be a unipotent flow on $Y = G / Γ^{'}$ . Let $u ~_{X}^{t}$ , $u ~_{Y}^{t}$ be time-changes of $u_{X}^{t…

math.DS2020

New time-changes of unipotent flows on quotients of Lorentz groups

Siyuan Tang

We study the cocompact lattices $Γ \subset S O (n, 1)$ so that the Laplace-Beltrami operator $Δ$ on $S O (n) \ S O (n, 1) /Γ$ has eigenvalues in $(0, 1/4)$ , and then show that there e…