In my field of study, I often see statements such as, "... such that, for every person, there were two chairs."
I'm wondering if there should be a comma after "such that"? If so, what are the rules of punctuation that allow and/or necessitate this?
I would greatly appreciate it if someone could please take the time to clarify this point.
The entire context would be similar to the following:
If a, b, and c are real numbers with a < 0, then there is a real number y such that(,) for every real number x, ax^2 + bx + c ≤ y.