2 replaced http://mathematica.stackexchange.com/ with https://mathematica.stackexchange.com/ edited Apr 13 '17 at 12:55 If someone is after an easy workaround, then here it is: First, you have to initialise the TeX conversion system by simply calling something like TeXForm[1] when you are working on a fresh Kernel. After that it is simply SystemConvertTeXFormDumpmaketex["x"] = "{\\bf x}"; TeXForm[x^2 + 1] (* {\bf x}^2+1 *)  For a detailed explanation, please see herehere. Note that this only works around the issue and doesn't explain, why it is not working as described. If someone is after an easy workaround, then here it is: First, you have to initialise the TeX conversion system by simply calling something like TeXForm[1] when you are working on a fresh Kernel. After that it is simply SystemConvertTeXFormDumpmaketex["x"] = "{\\bf x}"; TeXForm[x^2 + 1] (* {\bf x}^2+1 *)  For a detailed explanation, please see here. Note that this only works around the issue and doesn't explain, why it is not working as described. If someone is after an easy workaround, then here it is: First, you have to initialise the TeX conversion system by simply calling something like TeXForm[1] when you are working on a fresh Kernel. After that it is simply SystemConvertTeXFormDumpmaketex["x"] = "{\\bf x}"; TeXForm[x^2 + 1] (* {\bf x}^2+1 *)  For a detailed explanation, please see here. Note that this only works around the issue and doesn't explain, why it is not working as described. 1 answered May 9 '14 at 19:29 halirutan♦ 98.4k66 gold badges231231 silver badges427427 bronze badges If someone is after an easy workaround, then here it is: First, you have to initialise the TeX conversion system by simply calling something like TeXForm[1] when you are working on a fresh Kernel. After that it is simply SystemConvertTeXFormDumpmaketex["x"] = "{\\bf x}"; TeXForm[x^2 + 1] (* {\bf x}^2+1 *)  For a detailed explanation, please see here. Note that this only works around the issue and doesn't explain, why it is not working as described.