2 papers
math.SG2025
Weinstein neighbourhood theorems for stratified subspaces
Yael Karshon, Sara B. Tukachinsky, Yoav Zimhony
By analogy with Weinstein's neighbourhood theorem, we prove a uniqueness result for symplectic neighbourhoods of a large family of stratified subspaces. This result generalizes exi…
math.DG2023
Commutative Control Data for Smoothly Locally Trivial Stratified Spaces
Yoav Zimhony
For a compact Lie group G and a Hamiltonian G-space M with momentum map , we prove that the zero level set and the critical set of the norm-squared momentu…