Jacobi vector fields and geodesic tubes in certain Kähler manifolds
Jacobi-Bernoulli cohomology and deformations of schemes and maps
We introduce a notion of Jacobi-Bernoulli cohomology associated to a semi-simplicial Lie algebra (SELA). For an algebraic scheme X over ℂ, we construct a tangent SELA J X and show that the Jacobi-Bernoulli cohomology of J X is related to infinitesimal deformations of X.
Jet geometrical extension of the KCC-invariants.
Jet involution and prolongations of connections
Jet manifold associated to a Weil bundle
Given a Weil algebra and a smooth manifold , we prove that the set of kernels of regular -points of , , has a differentiable manifold structure and is a principal fiber bundle.
Jet spaces as nonrigid Carnot groups.
Jets and the variational calculus
We review the approach to the calculus of variations using Ehresmann's theory of jets. We describe different types of jet manifold, different types of variational problem and different cohomological structures associated with such problems.
Jets de fonctions differentiables sur le dual d'un groupe de Lie nilpotent.
Jets in differential spaces
Jumps of the eta-invariant (With an Appendix by Shmuel Weinberger: Rationality of p-invariants).