Hello, I'm trying to write some matrix row operations with lyx (solving a linear system if equations), so I need to have the row operations over/under an arrow. With one or two it's no problem, I can use \xrightarrow and put one above and if needed one below. I'm stuck though with what to do if i want to put a third (or more) operations in there. I can put a vector and a regular arrow in one of the entries, but then the size doesn't match. I tried putting a matrix above the \xrightarrow but lyx doesn't let me do it.
Is there another way? Thanks
