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The following is my expression:

       $y$ & $a_{bc}$ \\
       $a_{ab}^T$ & $y$

Note that the part a_{ab}^T is very close to the hline. I would like to have a bit larger spacing, such that 'T' from the above example is clearly separated from the hline. I've tried using [pt], but it did not work. I'm using

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See Column padding in tables. – Werner Jun 19 '12 at 17:30
up vote 6 down vote accepted

Since you are in the math mode anyway, you can use the array environment to avoid the $ pairs.


       y & a_{bc} \\
       a_{ab}^T & y


enter image description here

I would also recommend you to look at the mathtools package for more goodies regarding the matrix environments.

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One of most useful posts I have seen recently. Thanks a lot for pointing out mathtools package! – Predrag Punosevac Jun 19 '12 at 17:33
@PredragPunosevac Thank you! But I'm merely harvesting the other great answers. – percusse Jun 19 '12 at 20:21

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