How do I typeset a bold square bracket? I need to typeset it about 3 times thicker than it is (to denote a specific mathematical operator). {\bf[} does not do this. Things like [\![ do not seem to produce good quality. "The Comprehensive LaTeX Symbol List" does not seem to mention an appropriate symbol.
[Tex/LaTex] Bold square brackets
boldmath-modesymbols
Best Answer
\usepackage{bm}and then\bm{[}. Maybe this isn't bold enough for you in which case you can use a font with a heavy variant (eg the commercial mathtime set) and\usepackage{mathtime,bm}and then\hm{[}.Otherwise maybe you can use a different symbol, such as double square bracket
\llbracketfrom\usepackage{stmaryrd}.