Susan Tolman

activity

20242026

collaborators

3 papers

math.SG2026

Kähler complexity one Hamiltonian $T$ -manifolds have trivial paintings

Isabelle Charton, Liat Kessler, Susan Tolman

Let a torus $T$ act on a symplectic manifold $(M, ω)$ with moment map $ϕ$ . We say that the Hamiltonian $T$ -manifold $(M, ω, ϕ)$ has complexity one if $\frac{1}{2} dim M - dim T = 1$ …

math.SG2025

Connectedness of fibers beyond semitoric systems II: ephemeral singular points

Daniele Sepe, Susan Tolman

In an earlier paper, we proved the connectedness of the fibers of every $2 n$ -dimensional integrable system satisfying both: the action extends the action of an $(n - 1)$ -dimensional…

math.SG2024

Equivariant cohomological rigidity for four-dimensional Hamiltonian $S^{1}$ -manifolds

Tara S. Holm, Liat Kessler, Susan Tolman

For manifolds equipped with group actions, we have the following natural question: To what extent does the equivariant cohomology determine the equivariant diffeotype? We resolve t…

Kähler complexity one Hamiltonian T-manifolds have trivial paintings

Connectedness of fibers beyond semitoric systems II: ephemeral singular points

Equivariant cohomological rigidity for four-dimensional Hamiltonian S1-manifolds

Kähler complexity one Hamiltonian $T$ -manifolds have trivial paintings

Equivariant cohomological rigidity for four-dimensional Hamiltonian $S^{1}$ -manifolds