a \qquad b
a \quad b
a\ b
a\;b
a\,b
ab
a\!b
+
-
\pm
\mp
\times
\cdot
\frac{n}{m}
\tfrac{n}{m}
\binom{n}{m}
\tbinom{n}{m}
\mathrm
\mathit
\mathbf
\mathcal
\mathsf
\mathbb
\mathfrak
ε{\displaystyle \varepsilon \,\!}
ϑ{\displaystyle \vartheta \,\!}
ϰ{\displaystyle \varkappa \,\!}
ϖ{\displaystyle \varpi \,\!}
ϱ{\displaystyle \varrho \,\!}
ς{\displaystyle \varsigma \,\!}
φ{\displaystyle \varphi \,\!}
(ϝ){\displaystyle (\digamma )\,\!}
