# Difference between revisions of "Blackboard bold"

Blackboard bold is probably the most common way of denoting the "standard" number sets: the natural numbers, the integers and so on. In AMS-LaTeX, you use the `\mathbb{...}` command to obtain them; the ConTeXt way is the `\blackboard{...}` command. Also, the following commands are defined:
• `\naturalnumbers`
• `\integers`
• `\rationals`
• `\reals`
• `\complexes`
as well as `\primes` for blackboard bold P.