Lightlike ruled surfaces in .
Linear connections compatible with the -structure on the Lagrangian spaces.
Linear Connections Compatible With the F(3,1)-structure on the Lagrangian Space
Linear connections on almost commutative algebras.
Linear transformations of -connections in . II.
LIP manifolds: from metric to Finslerian structure.
Local isometric immersions of R2 into R4.
Local isometry classes of Riemannian -manifolds with constant Ricci eigenvalues
Local reduction theorems and invariants for singular contact structures
A differential 1-form on a -dimensional manifolds defines a singular contact structure if the set of points where the contact condition is not satisfied, , is nowhere dense in . Then is a hypersurface with singularities and the restriction of to can be defined. Our first theorem states that in the holomorphic, real-analytic, and smooth categories the germ of Pfaffian equation generated by is determined, up to a diffeomorphism, by its restriction to , if we eliminate certain degenerated singularities...
Local solvability of degenerate Monge-Ampère equations and applications to geometry.
Locally symmetric immersions
We use reflections with respect to submanifolds and related geometric results to develop, inspired by the work of Ferus and other authors, in a unified way a local theory of extrinsic symmetric immersions and submanifolds in a general analytic Riemannian manifold and in locally symmetric spaces. In particular we treat the case of real and complex space forms and study additional relations with holomorphic and symplectic reflections when the ambient space is almost Hermitian. The global case is also...
Lokale Geometrie des Radius in Riemannschen Mannigfaltigkeiten II
Lokale Geometrie des Radius in Riemannschen Mannigfaltigkeiten I
Lorentzian geometry as determined by the volumes of small truncated light cones
Magnetic Curves in a Euclidean Space: One Example, Several Approaches
Magnetic fields generated by piecewise rectilinear configurations.
Manifolds with quadratic curvature decay and slow volume growth
Maps between almost Kähler manifolds and framed -manifolds.
Margulis Lemma, entropy and free products
We prove a Margulis’ Lemma à la Besson-Courtois-Gallot, for manifolds whose fundamental group is a nontrivial free product , without 2-torsion. Moreover, if is torsion-free we give a lower bound for the homotopy systole in terms of upper bounds on the diameter and the volume-entropy. We also provide examples and counterexamples showing the optimality of our assumption. Finally we give two applications of this result: a finiteness theorem and a volume estimate for reducible manifolds.
Matter field space times admitting symmetry mappings satisfying vanishing contraction of the Lie deformation of the Ricci tensor