3 papers
math.DG2026
Locally conformal almost generalized -cosymplectic manifolds
Fortuné Massamba, Jude Rosnick Bayeni Mitoueni
This paper introduces a new class of geometric structures in almost contact metric geometry, which we call locally conformal almost generalized -cosymplectic manifolds. These ar…
math.DG2025
Timelike conformal fields on closed -manifolds
Emmanuel Gnandi, Fortuné Massamba
This paper investigates timelike conformal vector fields on closed Lorentzian -manifolds and shows that, although these fields form a broader class than Killing fields, their be…
math.DG2025
Remark on quasi Sasakian structures
Emmanuel Gnandi, Fortuné Massamba
In this work, we revisit quasi-Sasakian geometry in dimension three and examine how these structures interact with the foliation generated by the Reeb vector field and its basic co…