$11 Other Styles (math mode only)$
$Caligraphic letters:$
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}$etc.:mathbf{ABCDEFGHIJKLMNOPQRSTUVWXYZabc123}$