# Double stroke math

I recently started using ConTeXt and am trying to figure out how to place number sets. Namely, how do I get the natural number and real number sets to look like they do in LaTeX, (i.e. `\mathbb{N}` and `\mathbb{R}`)?

I found doublestroke, but the font isn't quite the same. Any suggestions?

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From the Blackboard bold page in `contextgarden`:

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`

`\primes`

`\blackboard{F}`

`\blackboard{O}`

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There is also the font switch `{\Bbb ...}`. –  Aditya Sep 7 '11 at 3:18