3 papers
math.SG2025
On the equivariant cohomological rigidity of semi-free Hamiltonian circle actions
Liat Kessler, Nikolas Wardenski
We consider semi-free Hamiltonian -manifolds of dimension six and establish when the equivariant cohomology and data on the fixed point set determine the isomorphism type. Gon…
math.SG2025
On isomorphisms of semi-free Hamiltonian -manifolds and fixed point data
Liat Kessler, Nikolas Wardenski
Following Gonzales, we answer the question of whether the isomorphism type of a semi-free Hamiltonian -manifold of dimension six is determined by certain data on the critical…
math.AT2025
On GKM fiber bundles and realizability with full flag fibers
Oliver Goertsches, Panagiotis Konstantis, Nikolas Wardenski +1
We investigate under which conditions an equivariant fiber bundle whose base, total space and fiber are GKM manifolds induces a fibration or fiber bundle of the corresponding GKM g…