Panagiotis Konstantis

activity

20142026

most citedAlmost complex structures on spheres

11 citations · 30 across the 20 of their papers we have counts for

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math.AT2026

On orientability, Poincaré duality, and connectivity of GKM graphs

Oliver Goertsches, Panagiotis Konstantis, Leopold Zoller

We investigate a combinatorial notion of orientability for abstract GKM graphs and its connections to graph cohomology in the sense of Guillemin--Zara. In particular, we prove that…

math.SG2026

Finiteness and boundedness of positive monotone Hamiltonian GKM $_{3}$ spaces

Panagiotis Konstantis, Silvia Sabatini, Leopold Zoller

In this paper, we establish three finiteness and boundedness theorems for compact positive monotone symplectic manifolds endowed with special actions, called GKM $_{3}$ , which general…

math.AT2026

Almost quaternionic structures on compact rank one symmetric spaces

Oliver Goertsches, Panagiotis Konstantis, Eugenia Loiudice +1

We prove that the only CROSSes that admit a (not necessarily homogeneous) almost quaternionic structure are $H P^{n}$ and $C P^{2}$ .

On orientability, Poincaré duality, and connectivity of GKM graphs

Finiteness and boundedness of positive monotone Hamiltonian GKM3​ spaces

Almost quaternionic structures on compact rank one symmetric spaces

Finiteness and boundedness of positive monotone Hamiltonian GKM $_{3}$ spaces