On Fri, 14 Sep 2007, Jesse Alama wrote: > I'd like to use a colon-equals sign symbol to indicate a definition. > According to The Comprehensive LaTeX Symbol List, this symbol is > available in the txfonts (LaTeX) package. However, it seems that the > txfonts support in ConTeXt doesn't contain that symbol. And, in any > case, a search for \coloneqq on the wiki gave no results. Perhaps the > symbol I want isn't called coloneqq in ConTeXt, or perhaps the symbol is > currently missing. How can I get this symbol in my ConTeXt document?
The symbol is called \colonequals. Other colon symbols are (from math-ext.tex) %D \macros %D {centercolon, colonminus, minuscolon, colonequals, equalscolon, %D colonapprox, approxcolon, colonsim, simcolon, coloncolon, %D coloncolonminus, minuscoloncolon, coloncolonequals, %D equalscoloncolon, coloncolonapprox, approxcoloncolon, %D colonsim, simcoloncolon} %D %D In $a := b$ the colon is not vertically centered with the equal %D to. Also the distance between colon and equal to is a bit large. %D So, we define a vertically centered colon \tex {centercolon} and %D a few macros for colon and double colon relation symbols. %D %D \startlines %D \formula {A \centercolon B} %D \formula {A \colonminus B} %D \formula {A \minuscolon B} %D \formula {A \colonequals B} %D \formula {A \equalscolon B} %D \formula {A \colonapprox B} %D \formula {A \approxcolon B} %D \formula {A \colonsim B} %D \formula {A \simcolon B} %D \formula {A \coloncolon B} %D \formula {A \coloncolonminus B} %D \formula {A \minuscoloncolon B} %D \formula {A \coloncolonequals B} %D \formula {A \equalscoloncolon B} %D \formula {A \coloncolonapprox B} %D \formula {A \approxcoloncolon B} %D \formula {A \colonsim B} %D \formula {A \simcoloncolon B} %D \stoplines The naming is after colonequals.sty rather than mathtools.sty. I find these names easier to remember, but if you want mathtools type names, it is easy to create aliases by \let\coloneqq=\colonequals and so on. Perhaps it is time to create a comprehensive math symbol list for ConTeXt also.... Aditya ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : https://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________