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Title:
Minimal Sets and Properties of Feral Pseudoholomorphic Curves

Speaker:
Joel Fish

Abstract:
I will discuss some current joint work with Helmut Hofer, in which we define and establish properties of a new class of pseudoholomorhic curves (feral J-curves) to study certain divergence free flows in dimension three. In particular, we show that if H is a smooth, proper, Hamiltonian on R^4, then no non-empty regular energy level of H is minimal. That is, the flow of the associated Hamiltonian vector field has a trajectory which is not dense.

Link:
https://www.ias.edu/video/sympdyngeo/2019/0318-JoelFish