[texhax] left-hand side superscript?

[E. Krishnan]

On Sat, 7 Feb 2004, E. Krishnan wrote:

> Please check out the "\sideset" command available in the "amsmath" 
> package.
 
On Sat, 7 Feb 2004, Robin Fairbairns wrote:

> i thought that too.  so i tried it before posting: doesn't work for
> left-subscripting _letters_ (what the op is after).  had i read the
> documentation first (it's in amsldoc) i'ld have known -- it's for
> ("large") operators only.

Oops! I too should've read the amsldoc more carefully! By the way don't 
you think ${}^A\!B$ gives a better looking result than ${}^AB$? So, maybe 
one can do something like

     \newcommand{\lsup}[2]{%
        \ensuremath{{}^{#2}\!{#1}}}

and go \lsup{B}{A}.

-- 
Krishnan