**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**

In linear algebra, the decomposition of a matrix $M$ as the matrix product $M = L U$ of

- a lower triangular matrix $L$

and

- an upper triangular matrix $U$

is is called *LU decomposition* or *LU factorization*.

- Wikipedia,
*LU decomposition*

Created on June 17, 2024 at 13:52:26. See the history of this page for a list of all contributions to it.