#
nLab

identity matrix

Contents
### Context

#### Linear algebra

**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**

# Contents

## Idea

An *identiy matrix* is a diagonal matrix with all diagonal entries equal to the identity element $1 \in R$ of the ground ring.

The identiy matrices are the identity elements in their matrix algebra, whence the name.

## References

See also

Created on November 9, 2019 at 06:06:32.
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