I have the code
\documentclass{amsart}
\begin{document}
\begin{equation}
]-\pi,0[ \qquad -\pi \qquad \int_{-\pi}^0 \qquad [-\pi,0]
\end{equation}
\end{document}
which produces
Why is the minus sign on the left so far away from pi and how can this be avoided?
Best Answer
In the TeXbook, Knuth refers to people using “]a,b[” notation for open intervals as “perverse mathematicians” (page 171, exercise 18.14). I don't fully agree with the adjective, but I find the notation very awkward nonetheless.
There is already a package for this, which avoids reinventing the wheel:
The middle
-\pi
needs braces, but it's a very different problem.See the documentation for
interval
to learn about other options.Note about Werner's solution
Consider the following code and compile it to see what results:
(properly embed it in a standard document).
It should be clear that simply bracing
-\pi
is not sufficient.