When I need to put a matrix in my paper, I usually use $$ to center it on my page, and I usually describe something about the matrix immediately after, e.g., "which has real entries..."
should I put a comma after the matrix? Is that the standard thing to do when writing a paper?
There's a bit of spacing between the matrix and the comma, so it looks a bit weird, but I also want to be grammatically correct, too.
What do you think?
Thanks,