Math & Science ⇒ A misplaced comma for a matrix

[NELLLY]

Hi
I use the package amsmath. I have the following vector

Code: Select all

\begin{eqnarray*}
\mu^{(t)}=\begin{bmatrix}
 P(D_t \in I_1)& P(D_t \in
I^{'}_2)\end{bmatrix},
 \end{eqnarray*}

I need the comma to begin just after the end of the border of the vector. For my case there is a space between them. What can I do?

[localghost]

At first read why not use the eqnarray* environment [1]. There are several commands for spacing in math mode. Just use the negative thin space.

[1] The PracTeX Journal - TeX Users Group, Lars Madsen: Avoid eqnarray!


Thorsten

[NELLLY]

Thanks.