Jiesong Zhang（张洁松）

About me

I received my B.Sc. from Shandong University in 2020 and my Ph.D. from Peking University in 2025, under the supervision of Shaobo Gan and Disheng Xu. I am currently a postdoctoral researcher at KTH, supervised by Danijela Damjanovic.

Research Interests

Dynamical systems, especially:

• Rigidity phenomena in partially hyperbolic and hyperbolic systems;
• Interactions with geometry, including foliations, complex geometry, conformal geometry, fractal geometry, contact geometry, Lie groups, and group actions.

Papers

• Invariant complex structures for affine automorphisms: a cocycle viewpoint. arXiv
  Preprint.
• Extremal distributions of partially hyperbolic systems: the Lipschitz threshold. With Martin Leguil and Disheng Xu. arXiv
  Preprint.
• Invariant distributions of partially hyperbolic systems: fractal graphs, excessive regularity, and rigidity. With Disheng Xu. arXiv
  Accepted for publication in Communications in Mathematical Physics.
• On holomorphic partially hyperbolic systems. With Disheng Xu. arXiv
  Journal of the European Mathematical Society, published online first, 2025.
• On the global product structure for uniformly quasiconformal Anosov diffeomorphisms. arXiv
  Discrete and Continuous Dynamical Systems, 45(2): 548–556, 2025.