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It seems that some mathematical formulae do not have as good kerning as standard text? Taking a specific example, I would like to change

enter image description here

The version on the left is LaTeX produced from \left(\frac{2\pi}{T}\right)^{\frac{8}{3}}, whereas the version on the right is a mock-up created in MS Paint.

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For individual cases you can add some \! before the fraction. – percusse Sep 6 '12 at 11:35
See also tex.stackexchange.com/a/31313/10499 – Noble P. Abraham Sep 6 '12 at 14:35
@percusse If you add your comment as an answer, I will mark it as the accepted answer. – User 17670 Sep 6 '12 at 19:14
up vote 9 down vote accepted

The usual negative space commands such as \! (See Large negative spaces )from the math-mode can be put before the exponent to shift it to the left.



enter image description here

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