Podcast #128: We chat with Kent C Dodds about why he loves React and discuss what life was like in the dark days before Git. Listen now.

 2 added 1 characters in body edited Feb 2 '12 at 19:54 Willie Wong 59.9k1010 gold badges121121 silver badges218218 bronze badges The command that gives the tombstone is part of amsthm (or other theorem environment packages). The positioning of the tombstone is actually quite complicated, and I do not believe it is currently implemented in MathJax, nor do I think it will be in the near future. Let me emphasize: MathJax is not, and was never intended to be a full featured dynamic LaTeX parser. It is a platform for displaying mathematics coded using TeX or MathML notation in an aesthetic way. If you must have an ErdosHalmos symbol, you will have to kludge it yourself by inserting sufficiently much spacing (possibly with  s or \qquads inside dollar signs) and place $$\Box$$ (\Box) or $$\blacksquare$$ (\blacksquare) yourself. But let me ask: what's wrong with just typing the three letters "q.e.d."? The command that gives the tombstone is part of amsthm (or other theorem environment packages). The positioning of the tombstone is actually quite complicated, and I do not believe it is currently implemented in MathJax, nor do I think it will be in the near future. Let me emphasize: MathJax is not, and was never intended to be a full featured dynamic LaTeX parser. It is a platform for displaying mathematics coded using TeX or MathML notation in an aesthetic way. If you must have an Erdos symbol, you will have to kludge it yourself by inserting sufficiently much spacing (possibly with  s or \qquads inside dollar signs) and place $$\Box$$ (\Box) or $$\blacksquare$$ (\blacksquare) yourself. But let me ask: what's wrong with just typing the three letters "q.e.d."? The command that gives the tombstone is part of amsthm (or other theorem environment packages). The positioning of the tombstone is actually quite complicated, and I do not believe it is currently implemented in MathJax, nor do I think it will be in the near future. Let me emphasize: MathJax is not, and was never intended to be a full featured dynamic LaTeX parser. It is a platform for displaying mathematics coded using TeX or MathML notation in an aesthetic way. If you must have an Halmos symbol, you will have to kludge it yourself by inserting sufficiently much spacing (possibly with  s or \qquads inside dollar signs) and place $$\Box$$ (\Box) or $$\blacksquare$$ (\blacksquare) yourself. But let me ask: what's wrong with just typing the three letters "q.e.d."? 1 answered Feb 2 '12 at 19:18 Willie Wong 59.9k1010 gold badges121121 silver badges218218 bronze badges The command that gives the tombstone is part of amsthm (or other theorem environment packages). The positioning of the tombstone is actually quite complicated, and I do not believe it is currently implemented in MathJax, nor do I think it will be in the near future. Let me emphasize: MathJax is not, and was never intended to be a full featured dynamic LaTeX parser. It is a platform for displaying mathematics coded using TeX or MathML notation in an aesthetic way. If you must have an Erdos symbol, you will have to kludge it yourself by inserting sufficiently much spacing (possibly with  s or \qquads inside dollar signs) and place $$\Box$$ (\Box) or $$\blacksquare$$ (\blacksquare) yourself. But let me ask: what's wrong with just typing the three letters "q.e.d."?