## About

Multiplication is denoted by:

- the cross symbol × (\times in Latex),
- by a point ·
- or by the absence of symbol

It's a binary function.

## Articles Related

## Properties

Multiplication is:

- Associative: <math>\alpha(\beta.v) = (\alpha.\beta)v</math>

## Rules for handling the signed quantities

By: Rafael Bombelli in his Algebra (1572)

- Plus times plus makes plus
- Minus times minus makes plus
- Plus times minus makes minus
- Minus times plus makes minus.