# [texhax] ?

File Store 5mgfreestore at gmail.com
Fri Jan 29 22:02:45 CET 2010

I need to put a letter c at the top right corner of

\$\$\widetilde{B}_j^i\$\$

I type

\${\widetilde{B}_^i}^c\$

it does not work.

When I type

\$\$\widetilde{B}_j^{i^c}\$\$

it looks somehow ok but there must be a right way of wrting it.

Consider first

\$\$A^c\$\$

How can I have the same look with

\$\$\widetilde{B}_j^i\$\$

instead of \$A\$ in \$A^c\$ ?

We put a letter 'c' at the top right corner of the a set to denote it's
complement if you are familier with set theory.
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