homology sphere

**homotopy theory, (∞,1)-category theory, homotopy type theory**

flavors: stable, equivariant, rational, p-adic, proper, geometric, cohesive, directed…

models: topological, simplicial, localic, …

see also **algebraic topology**

**Introductions**

**Definitions**

**Paths and cylinders**

**Homotopy groups**

**Basic facts**

**Theorems**

A *homology sphere* is a topological space which need not be homeomorphic to an n-sphere, but which has the same ordinary homology as an $n$-sphere.

- Wikipedia,
*Homology sphere*

Last revised on December 1, 2019 at 14:13:12. See the history of this page for a list of all contributions to it.