International Journal of Mathematics and Mathematical Sciences
Volume 2003 (2003), Issue 51, Pages 3241-3266

Lagrange geometry on tangent manifolds

Izu Vaisman

Department of Mathematics, University of Haifa, Haifa 31905, Israel

Received 13 March 2003

Copyright © 2003 Izu Vaisman. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Lagrange geometry is the geometry of the tensor field defined by the fiberwise Hessian of a nondegenerate Lagrangian function on the total space of a tangent bundle. Finsler geometry is the geometrically most interesting case of Lagrange geometry. In this paper, we study a generalization which consists of replacing the tangent bundle by a general tangent manifold, and the Lagrangian by a family of compatible, local, Lagrangian functions. We give several examples and find the cohomological obstructions to globalization. Then, we extend the connections used in Finsler and Lagrange geometry, while giving an index-free presentation of these connections.