Finsler geometry Guide, Meaning , Facts, Information and Description

In mathematics, a Finsler manifold is a differential manifold M with a Banach norm defined over each tangent space such that the Banach norm as a function of position is smooth and satisfies the following property:

For each point x of M, and for every vector v in the tangent space T_xM, the second derivative of the function L:T_xM->R given by

at v is positive definite.

Riemannian manifolds (but not pseudo Riemannian manifolds) are special cases of Finsler manifolds.

The length of γ, a differentiable curve in M is given by

.

Note that this is reparametrization-invariant. Geodesics are curves in M whose length is extremal under functional derivatives.

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