A continuous real function defined on the Tangent Bundle of an -D Differentiable Manifold is said to be a Finsler metric if
See also Differentiable Manifold, Finsler Space, Tangent Bundle
References
Iyanaga, S. and Kawada, Y. (Eds.). ``Finsler Spaces.'' §161 in
Encyclopedic Dictionary of Mathematics. Cambridge, MA: MIT Press, p. 540-542, 1980.