# On the Hofer Zehnder Conjecture for Semipositive Symplectic Manifolds

## Location

383N

Event Series

Event Type

Seminar

Monday, December 11, 2023 4:00 PM

Han Lou (UGA)

Arnold conjecture says that the number of 1-periodic orbits of a Hamiltonian diffeomorphism is greater than or equal to the dimension of the Hamiltonian Floer homology. In 1994, Hofer and Zehnder conjectured that there are infinitely many periodic orbits if the equality doesn't hold. In this talk, I will show that the Hofer-Zehnder conjecture is true for semipositive symplectic manifolds with semisimple quantum homology. This is a joint work with Marcelo Atallah.