collaborators

3 papers

math.DG2026

Classification of quaternionic skew-Hermitian symmetric spaces

Ioannis Chrysikos, Jan Gregorovič

We provide a complete classification of quaternionic skew-Hermitian symmetric spaces, namely symmetric spaces that admit a torsion-free -structure for…

math.DG2026

Submanifolds of almost quaternionic skew-Hermitian manifolds

Ioannis Chrysikos, Jan Gregorovič

We investigate several classes of submanifolds of almost quaternionic skew-Hermitian manifolds , including almost symplectic, almost complex, almost pseudo-Hermiti…

math.CV2025

Defining equations of -dimensional model CR hypersurfaces

Jan Gregorovič, David Sykes

We study CR hypersurfaces in that are Levi degenerate with constant rank Levi form, and moreover finitely nondegenerate. Each of these can be described as a deformat…