In mathematical mode as well as in text mode, you can change the typeface as needed. For instance, it's customary to represent real numbers with a blackboard .

Jun 1, 2012 In the Computer Modern math font world, bold letters generated via \mathbf are available only in upright or "Roman" style; other math font.

Feb 3, 2006 Abstract We survey free math fonts for TEX and LATEX, with reasonably easy to use an arbitrary Postscript Type 1 font in TEX for text (see.