Hi there, There is a special LaTeX style for B Symbols (bsymb.sty) from the RODIN project ... you can download it here: http://sourceforge.net/project/showfiles.php?group_id=108850&package_id=138165. Put this in the appropriate location, and then put \usepackage{bsymb} in the preamble of your document. Cheers, Ari