Re: symbol R for real numbers

[Torsten Mueller]

>\usepackage{bbm} in the preamble,
I couldnt find this package.
I have only found sbbm.sty


>then you can use \mathbbm{R}, \mathbbm{N}, ....
with sbbm.sty there is a command \mathbb{}, but when I use this with R
then I get a normal R and not with two lines at the left side (as I would
have expected)

Thanks,
Torsten