Number - Multiplication (Product)

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.

Properties

Multiplication is:

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.

Documentation / Reference


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