【转载】 在博客中使用MathJax写数学公式

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\begin{CD}
  \require{AMScd}
  X @>T>> Y \\
  @AJ_XAA @AAJ_YA \\
  X_s' @<<{T'}< Y_s'
\end{CD}

\begin{CD}
  \require{AMScd}
  X @>T>> Y \\
  @AJ_XAA @AAJ_YA \\
  X_s' @<<{T'}< Y_s'
\end{CD}

\begin{CD}
  \require{AMScd}
  X @>T>> Y \\
  @AJ_XAA @AAJ_YA \\
  X_s' @<<{T'}< Y_s'
\end{CD}

\begin{CD}
  \require{AMScd}
  X @>T>> Y \\
  @AJ_XAA @AAJ_YA \\
  X_s' @<<{T'}< Y_s'
\end{CD}

$$ %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % Self-defined math definitions %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % Math symbol commands \newcommand{\intd}{\,{\rm d}} % Symbol 'd' used in integration, such as 'dx' \newcommand{\diff}{{\rm d}} % Symbol 'd' used in differentiation ... $$