5 papers
Properties of Holomorphic -Contact Manifolds
Hisashi Kasuya, Dan Popovici, Luis Ugarte
We continue the study of compact holomorphic -contact manifolds that we introduced recently by expanding the discussion to include non-Kähler hyperbolicity issues and a diff…
On splittings of deformations of pairs of complex structures and holomorphic vector bundles
Hisashi Kasuya, Valto Purho
We can show that the Kuranishi space of a pair of a compact Kähler manifold and its flat Hermitian vector bundle is isomorphic to the direct product of the Kuranish…
GIT stability and biquotients of
Yoshinori Hashimoto, Hiroaki Ishida, Hisashi Kasuya
We study double-sided actions of on and the associated quotients, where is a maximal unipotent subgroup of . The main…
Higher-Degree Holomorphic Contact Structures
Hisashi Kasuya, Dan Popovici, Luis Ugarte
We introduce the classes of holomorphic -contact manifolds and holomorphic -symplectic manifolds that generalise the classical holomorphic contact and holomorphic symplectic…
Cartan Flat Non-degenerate CR Lie Groups
Keizo Hasegawa, Hisashi Kasuya
In this paper we determine all the simply connected non-degenerate CR Lie groups, which are flat with respect to the Cartan connection: in terms of associated Lie algebras, we asse…