Singularities in the geometry of an obstacle
Some generalization of Godement’s theorem on division
Some invariants of Lie algebroids of principal fibre bundles
Some natural operations between connections on fibred manifolds
Given a fibered manifold , a 2-connection on means a section . The authors determine all first order natural operators transforming a 2-connection on and a classical linear connection on into a connection on . (The proof implies that there is no first order natural operator transforming 2-connections on into connections on .) Using this result, the authors deduce several properties of characterizable connections on .
Some theorems for holomorphic functions with proximate order
Special connections on smooth 3-web manifolds
For a three-web of codimension on a differentiable manifold of dimension , the author studies the Chern connection and a family of parallelizing connections. The latter ones have a common property with the former: the web-distributions are parallel with respect to them.
Spingroups and spherical means III
Spinor fields on Riemannian manifolds
Supersymmetric quantum mechanics and -nonlinear Schrödinger equation