4-Dimensional (Para)-Kähler-Weyl Structures
4-planar mappings of almost quaternionic and almost antiquaternionic Spaces.
50 years sets with positive reach -- a survey.
(F1, F2)- And (F3, F4)-Connexions Of An Almost Complex And An Almost Product Space
...-flat manifolds and Riemannian submersions.
“Geometry” of spin 3 gauge theories
(n-2)-tightness and curvature of submanifolds with boundary.
...-platitude des Structures de Contact.
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-Ricci Solitons on -Einstein -Manifolds
The object of the present paper is to study -Ricci solitons on -Einstein -manifolds. It is shown that if is a recurrent torse forming -Ricci soliton on an -Einstein -manifold then is (i) concurrent and (ii) Killing vector field.
-minkowskianity of the Schwarzschild universe
π-geodesics and lines of shadow
-recurrent trans-Sasakian manifolds
-symmetric spaces and weak symmetry
Proviamo che tutti gli spazi semplicemente connessi -simmetrici sono debolmente simmetrici e quindi commutativi.
Автоморфизмы расслоенных пространств
Аксиоматика общерелятивистского и финслерова пространство-времен посредством причинности
Алгебра обобщенных полей Якоби