Blackboard variants of Computer Modern fonts. The fonts are distributed as Metafont source (only); LaTeX support is available with the bbm-macros package. The Sauter font package has Metafont parameter source files for building the fonts at more sizes than you could reasonably imagine.
A sample of these fonts appears in the blackboard bold sampler.
The author is Gilles Robert.
License: other-free Version dated: 1993-04-13 Catalogued: 2014-04-06