LaTeX2MathJax

$\phantom{}$$
\newcommand\nr{\notag\\\\}%タグなし改行用
\newcommand\ret{\notag\\\\&\qquad}%数式改行用
\newcommand\I{\mathrm{i}}
\newcommand\D{\mathrm{d}}
\newcommand\E{\mathrm{e}}
\newcommand\hc{\mathrm{h.c.}}
\newcommand\cc{\mathrm{c.c.}}
\newcommand\O[1]{\mathscr{O}\left(#1\right)}
\newcommand\abs[1]{{\left\rvert #1 \right\lvert}}
\newcommand\Res{\mathop{\mathrm{Res}}}
\newcommand\bra[1]{\mathinner{\langle{#1}|}}
\newcommand\ket[1]{\mathinner{|{#1}\rangle}}
\newcommand\braket[1]{\mathinner{\langle{#1}\rangle}}
\newcommand\Bra[1]{\left\langle#1\right|}
\newcommand\Ket[1]{\left|#1\right\rangle}
\newcommand\Braket[1]{\left\langle #1 \right\rangle}
\newcommand\|{\middle|}%\Braket用
\DeclareMathOperator{\Log}{Log}
\DeclareMathOperator{\Arg}{Arg}
\DeclareMathOperator{\sgn}{sgn}
\DeclareMathOperator{\Tr}{Tr}
\newcommand\dashint{\mathchoice
  {\int\kern-10pt-}
  {\int\kern-8.5pt-}
  {\int\kern-6.1pt-}
  {\int\kern-4.58pt-}}
\newcommand\set[1]{\left\\{#1\right\\}}
\newcommand\for[1]{\quad\mathrm{for}\quad #1}
\newcommand\LHS{\mathrm{(LHS)}}
\newcommand\RHS{\mathrm{(RHS)}}
$