AMS-like matrices

AMS-like matrices

[David Arnold]

All,

Are there nath, newmat, amsl constructs that do the following:

%matrix wrapped in parentheses ()
\begin{pmatrix}
1&2&3&4\\
5&6&7&8
\end{pmatrix}

%matrix wrapped in brackets []
\begin{bmatrix}
1&2&3&4\\
5&6&7&8
\end{bmatrix}

%matrix wrapped in curly braces {}
\begin{Bmatrix}
1&2&3&4\\
5&6&7&8
\end{Bmatrix}

%matrix wrapped in absolute values || good for determinants
\begin{vmatrix}
1&2&3&4\\
5&6&7&8
\end{vmatrix}

%matrix wrapped in || || good for magnitude of a vector
\begin{Vmatrix}
1&2&3&4\\
5&6&7&8
\end{Vmatrix}