Hints on LaTeX.
Tricks of Latex
Symbols
$\mathcal{D}$1
$\mathcal{D}$
$\mathscr{D}$1
2% Euscript
$\mathscr{D}$
$\Rightarrow$1
$\Rightarrow$
$\nRightarrow$1
$\nRightarrow$
overleaf link
Alignment
Left brace of multiple lines
Greek alphabet
Hints on LaTeX.
$\mathcal{D}$1
$\mathcal{D}$
$\mathscr{D}$1
2% Euscript
$\mathscr{D}$
$\Rightarrow$1
$\Rightarrow$
$\nRightarrow$1
$\nRightarrow$
overleaf link