Originally Posted by

**Greengoblin** Hi, I'm looking for a font that is commonly used in mathematics, similar to blackboard font (\mathbb{}) for special number sets.

Some examples:

$\displaystyle x \in \mathbb{R}$

$\displaystyle \mathcal{L}\left\{ {f\left( t \right)} \right\} \equiv F\left( s \right) = \int_0^\infty {{e^{ - st}}f\left( t \right)dt}$

$\displaystyle \mathfrak{h} \subseteq \mathfrak{g}$

All of these symbols are available in the MathType fonts, available by free download from the Design Science website: MathType: Font Installers

Fonts used:$\displaystyle \mathbb{R}$ (Euclid Math Two)

$\displaystyle \mathcal{L}$ (Euclid Math One)

$\displaystyle \mathfrak{h}$ (Euclid Fraktur)

There's also a font in the MathType font set that looks like the TeX font Computer Modern. This one is called Euclid, and is useful if you have to work in Word (to collaborate with colleagues using Word, etc.) but want your documents to look like TeX.