# Definition:Smooth Curve

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## Definition

Let $M$ be a smooth manifold.

Let $I$ be a open real interval, considered as a smooth manifold of dimension $1$.

This article, or a section of it, needs explaining.In particular: We have various pages defining "manifolds" of various types (differentiable, smooth, complex), but not one defining a basic "manifold". It can be assumed by inference that a manifold is "a second-countable locally Euclidean space of finite integral dimension" but this needs to be rigorously and unambiguously clarified by including that definition at the top level of the page Definition:Topological Manifold.You can help $\mathsf{Pr} \infty \mathsf{fWiki}$ by explaining it.To discuss this page in more detail, feel free to use the talk page.When this work has been completed, you may remove this instance of `{{Explain}}` from the code. |

Then a smooth mapping $\gamma : I \to M$ is called a **smooth curve**.

## Sources

- 2018: John M. Lee:
*Introduction to Riemannian Manifolds*(2nd ed.) ... (previous) ... (next): $\S 2$: Riemannian Metrics. Lengths and Distances