$11\ Other\ Styles\ (math\ mode\ only)$
$Caligraphic\ letters:$
\mathcal{A}$etc.:\mathcal{ABCDEFGHIJKLMNOPQRSTUVWXYZ}$
$Mathbb\ letters:$
\mathbb{A}$etc.:\mathbb{ABCDEFGHIJKLMNOPQRSTUVWXYZ}$
$Mathfrak\ letters:$
\mathfrak{A}$etc.:\mathfrak{ABCDEFGHIJKLMNOPQRSTUVWXYZabc123}$
$Math\ Sans\ serif\ letters:$
\mathsf{A}$etc.:\mathsf{ABCDEFGHIJKLMNOPQRSTUVWXYZabc123}$
$Math\ bold\ letters:$
\mathbf{A}$etc.:\mathbf{ABCDEFGHIJKLMNOPQRSTUVWXYZabc123}$