horizontalmath-modespacingwhite space
In the majority of fonts such as Computer Modern, NewTX Math, or TeX Gyre Termes Math, how wide is the control space \ (visibly: \␣) in relation to the other math-mode space commands
\quad,
\;,
\>, and
\,?
That is, is it possible to sort the list “\quad, \;, \>, \,, \␣“ in a descending order universally or almost universally?
In texdoc symbols (the Comprehensive LaTeX Symbol List) you can find Table 316:
The footnotes are explained in the document. Table 327 will additionally explain bold math.
Oh and needless to say but if you were asking this question because you need more mathematical symbols, the Comprehensive List is just your document. Greek variants, Hebrew, Tables 139 to 147 are letter-like symbols ... you'll probably never run out of symbols again.
Edit: After reading this answer https://tex.stackexchange.com/a/60018/13450 I feel the need to also point to the mathalfa package that is referenced there, providing even more alternatives than shown above.
Edit 2: This answer seems so popular that I decided to include the mathalfa table as an image as well. This is taken from the mathalfa documentation and some of the fonts are commercial or need to be installed from external sources. See the documentation for more information if you consider using any of these fonts. Warning, very long table ahead (stitched together from a multi-page table).
Edit 3: With this thread being so popular for reasons I don't entirely understand, I feel compelled to say that there is rarely a point in using more styles than regular, bold, italic, script/calligraphic (I wouldn't even mix those) and blackboard bold. What these tables really show are typefaces you can use for these styles, not a huge number of styles (which would be pointless and ugly anyway). If, however, you are just searching for math fonts to go with your main font, the overview you probably actually want before even consulting these tables is the list of math fonts on the LaTeX Font Catalogue.
The positioning of numerators and denominators is controlled by a font parameter that can easily be modified in LuaLaTeX:
\documentclass[pagesize=auto, version=last]{scrartcl}
\usepackage{fontspec}
\usepackage{unicode-math}
\usepackage{luacode}
\usepackage{luatexbase-mcb}
\setmathfont{Cambria Math}
\setmainfont{Cambria}
\begin{luacode*}
local function patch_cambria_frac(fontdata)
if fontdata.psname == "CambriaMath" then
local mc = fontdata.MathConstants
mc.FractionNumeratorShiftUp = 0.4 * mc.FractionNumeratorShiftUp
mc.FractionDenominatorShiftDown = 0.4 * mc.FractionDenominatorShiftDown
end
end
luatexbase.add_to_callback("luaotfload.patch_font", patch_cambria_frac, "cambria_frac")
\end{luacode*}
\begin{document}
$\frac{19}{30}$
\end{document}
Best Answer
\is the same as an interword space so is\fontdimen2plus\fontdimen3minus\fontdimen4in the current font.
\quadis\hskip 1emso is\fontdimen6in the current font.
See What do different \fontdimen<num> mean
\;\>\,were originally math mode only, but now have similar defintions in text mode and are\thickmuskip,\medmuskipand\thinmuskiprespectively which are set by the macro layer but inmuunits so 1/18 em in the font assigned to\fam2generally
\quadis bigger than\which is bigger than\;then\>then\,