Definition:Tangent Bundle

Definition
Let $M$ be a differentiable manifold.

Let $p \in M$ be a point in $M$.

Let $T_p M$ be the tangent space at $p$.

The tangent bundle of $M$ is the disjoint union of all the tangent spaces of $M$:


 * $\ds T M = \coprod_{p \mathop \in M} T_p M$

Also see

 * Tangent Bundle is Differential Manifold