Line bundles with . Higher order obstruction
We study secondary obstructions to representing a line bundle as the pull-back of a line bundle on and we interpret them geometrically.
Line Fields with Branch Defects.
Linear äquivariante Einbettungen Steinscher Räume.
Linear direct connections
In this paper we study the geometry of direct connections in smooth vector bundles (see N. Teleman [Tn.3]); we show that the infinitesimal part, , of a direct connection τ is a linear connection. We determine the curvature tensor of the associated linear connection As an application of these results, we present a direct proof of N. Teleman’s Theorem 6.2 [Tn.3], which shows that it is possible to represent the Chern character of smooth vector bundles as the periodic cyclic homology class of a...
Link cobordism.
Link invariants via the eta invariant.
Link maps and the geometry of their invariants.
Linking and the Morse complex
For a Morse function on a compact oriented manifold , we show that has more critical points than the number required by the Morse inequalities if and only if there exists a certain class of link in whose components have nontrivial linking number, such that the minimal value of on one of the components is larger than its maximal value on the other. Indeed we characterize the precise number of critical points of in terms of the Betti numbers of and the behavior of with respect to links....
Linking numbers and boundaries of varieties.
L'instanton gordien
L'invariant de Godbillon-Vey
L'invariant de Witt de la forme Tr(x2).
Local and nice structures of the groupoid of an equivalence relation
Local density of diffeomorphisms with large centralizers
Given any compact manifold , we construct a non-empty open subset of the space of -diffeomorphisms and a dense subset such that the centralizer of every diffeomorphism in is uncountable, hence non-trivial.
Local Formulae for Stiefel-Whitney classes.
Local homology of groups of volume-preserving diffeomorphisms, II.
Local homology of groups of volume-preserving diffeomorphisms. III
Local invariants of a pseudo-Riemannian manifold.
Local Normal Forms of Functions.
Local structure of the zero-sets of differentiable mappings and application to bifurcation theory.