A bit of everything

# The many faces of projective objects

In mathematics and physics, there is quite a long list of objects which are, in some way, related to each other. It can be useful to keep down a little list of those various types of objects and their relationships.

## Projective space

Probably the oldest such objects are the ones related to projective geometry.

## Quaternions

Quaternions are defined as an algebra over a $4$-dimensional vector space

## Twistors

Last updated : 2021-11-18 14:04:56
Tags : mathematics