**manifolds** and **cobordisms**

cobordism theory, *Introduction*

**Definitions**

**Genera and invariants**

**Classification**

**Theorems**

A *submanifold* is a manifold inside another manifold.

For a homomorphism of differentiable manifolds

$X \hookrightarrow Y$

to qualify as a submanifold inclusion it is usually required to be an embedding of differentiable manifolds, hence

See also

- Wikipedia,
*Submanifold*

Last revised on February 12, 2021 at 11:30:42. See the history of this page for a list of all contributions to it.