7

...say in a 2x2 matrix, the fractions are almost touching each other and is sort of hard to read, especially fractions involving a lot of greek letters.

One such matrix in my code is this:

$$\setlength{\delimitershortfall}{0pt} \mathcal{A} =
\begin{bmatrix}
1-\frac{1-\sigma_2}{2} & \frac{1-\sigma_2}{2} \\
\frac{1-\sigma_2}{2} & 1-\frac{1-\sigma_2}{2} \\
\end{bmatrix}
$$
egreg
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user58865
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    There are quite a few ways to create a matrix. Please tell us the way(s) you use at the moment. Please also tell us if the matrix occurs in display-mode math or text-mode math. – Mico Oct 01 '16 at 05:43
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    Hi @Mico, please see my edited question - thanks, – user58865 Oct 01 '16 at 05:47

1 Answers1

9

For the case of a 2x2 matrix, it's probably easiest to achieve your objective by adding a spacer directive such as [1ex] after the first line-break instruction.

Incidentally, the use of $$ to initiate and terminate display-math mode in LaTeX is heavily deprecated. See Why is \[ ... \] preferable to $$ ... $$ for a longer discussion of this issue.

enter image description here

\documentclass{article}
\usepackage{amsmath} % for 'bmatrix' environment and '\text' macro
\begin{document}
\[
\begin{bmatrix}
1-\frac{1-\sigma_2}{2} &   \frac{1-\sigma_2}{2} \\
  \frac{1-\sigma_2}{2} & 1-\frac{1-\sigma_2}{2}
\end{bmatrix}
\quad\text{versus}\quad
\begin{bmatrix}
1-\frac{1-\sigma_2}{2} &   \frac{1-\sigma_2}{2} \\[1ex]  % <-- observe "[1ex]" spacer
  \frac{1-\sigma_2}{2} & 1-\frac{1-\sigma_2}{2}
\end{bmatrix}
\]
\end{document}
Community
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Mico
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