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 )\,\!}
