Groupes de spinorialité
Groups in the category of f-manifolds
Groups of transformations of a G-structure whic H leave invariant a substructure.
G-structures of second order defined by linear operators satisfying algebraic relations.
The present work is based on a type of structures on a differential manifold V, called G-structures of the second kind, defined by endomorphism J on the second order tangent bundle T2(V ). Our objective is to give conditions for a differential manifold to admit a real almost product and a generalised almost tangent structure of second order. The concepts of the second order frame bundle H2(V ), its structural group L2 and its associated tangent bundle of second order T2(V ) of a differentiable manifold...