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

@article{Tang2021RigidityOJ, title={Rigidity of joinings for time changes of unipotent flows on quotients of Lorentz groups}, author={Siyuan Tang}, journal={Ergodic Theory and Dynamical Systems}, year={2021} }

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<jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" mime-subtype="png" xlink:href="S0143385722000839_inline1.png" />
<jats:tex-math>$u_{X}^{t}$</jats:tex-math>
</jats:alternatives>
</jats:inline-formula> be a unipotent flow on <jats:inline-formula>
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## One Citation

### On rigidity properties of time-changes of unipotent flows

- Mathematics
- 2022

We study time-changes of unipotent ﬂows on ﬁnite volume quotients of simple linear groups, generalizing previous work by Ratner on time-changes of horocycle ﬂows. Any measurable isomorphism between…

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A main ingredient of the proof is a stronger version of the branching of the complementary series and a refinement of the works of Ratner and Flaminio–Forni is adequate for the purpose.

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