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%md Displayed matrix works: $$ \begin{bmatrix} a & b \\ b & c \end{bmatrix}$$ Non-displayed matrix does not work due to some backslash escaping we do not want touching tex: $\begin{bmatrix} a & b \\ b & c \end{bmatrix}$ Proof that this is the problem: $\begin{bmatrix} a & b \\\\ b & c \end{bmatrix}$

Displayed matrix works: [abbc] \begin{bmatrix} a & b \\ b & c \end{bmatrix}

Non-displayed matrix does not work due to some backslash escaping we do not want touching tex: [abbc]\begin{bmatrix} a & b \\ b & c \end{bmatrix}

Proof that this is the problem: [abbc]\begin{bmatrix} a & b \\\\ b & c \end{bmatrix}

%html Displayed matrix works: $$ \begin{bmatrix} a & b \\ b & c \end{bmatrix}$$ Non-displayed matrix works fine in html mode: $\begin{bmatrix} a & b \\ b & c \end{bmatrix}$
Displayed matrix works: [abbc] \begin{bmatrix} a & b \\ b & c \end{bmatrix} Non-displayed matrix works fine in html mode: [abbc]\begin{bmatrix} a & b \\ b & c \end{bmatrix}