Double Superscript Error with Macro Adding a Superscript

Question

I found a lots of questions asking how to add a superscript to a variable defined with a superscript but none for how to do it the other way around.

My macro is \newcommand{\trsp}[1]{#1^T} and I want to apply it to e.g. \trsp{M^{-1}}.

How do I avoid a Double Superscript error ?

the simplest way is to define \trsp as {#1}^T but that has some consequences on spacing in all cases. So alternative is to explicitly test or have a separate command for teh transposed inverse — David Carlisle, Jun 07 '21 at 07:46
If you want something automatic, have a look at this answer. — NBur, Jun 08 '21 at 07:29

score 1 · Accepted Answer · answered Jun 07 '21 at 08:30

1

Use \def\trsp#1{{#1}^T}. The key is to use {#1} instead #1 in the body of the macro. You can use \newcommand too, if you are using LaTeX.

answered Jun 07 '21 at 08:30

wipet

1 Answers1