3 papers
math.AT2024
On integral Chang-Skjelbred computations with disconnected isotropy groups
Leopold Zoller
The Chang-Skjelbred method computes the cohomology of a suitable space with a torus action from its equivariant one-skeleton. We show that, under certain restrictions on the cohomo…
math.AT2024
Nontrivial Massey products on compact Kähler manifolds
Giovanni Placini, Jonas Stelzig, Leopold Zoller
We show that the bigraded quasi-isomorphism type of the bigraded, bidifferential algebra of forms on a compact Kähler manifold generally contains more information than the de Rham…
math.AT2023
On the Stiefel-Whitney classes of GKM manifolds
Oliver Goertsches, Panagiotis Konstantis, Leopold Zoller
We show that under standard assumptions on the isotropy groups of an integer GKM manifold, the equivariant Stiefel-Whitney classes of the action are determined by the GKM graph. Th…