#
nLab

h-cobordism

Contents
### Context

#### Manifolds and cobordisms

# Contents

## Idea

An *h-cobordism* is a cobordism such that the two boundary inclusions$\Sigma_1, \Sigma_2 \hookrightarrow \Sigma$ are homotopy equivalences.

## Properties

### h-Cobordism theorem

The *h-cobordism theorem* gives sufficient conditions for an h-cobordism to be equivalent to a cylinder.

## References

See also

Created on June 26, 2017 at 05:44:07.
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