A special issue of Pure and Applied Functional Analysis honors mathematician School of Mathematics Regents' Professor Leonid Bunimovich on his 75th birthday. 

Bunimovich's pioneering contributions have shaped modern dynamical systems. He is best known for discovering a fundamental mechanism of chaos in dynamical systems, including systems of chaotic billiards such as the Bunimovich stadium, Bunimovich flowers, and elliptic flowers. Learn about his research in this 2023 news story: Bringing Understanding to Chaotic Dynamics with Billiards, Flowers, and ... Mushrooms?