Is there a free package to get non-upright (i.e. italic or slanted) blackboard symbols in a Type1 font?
It's easy to get three of the four properties (i.e. blackboard italic font, http://www.pctex.com/mtpro2.html), but I failed to find a package with all four properties combined. If there is some alternative to blackboard which also looks like a set symbol it would be fine, too.