The problem is about compressing gas in a cylinder and finding the pressure. I feel like it would be solvable if I just ignore those symbols, but they're probably there for a reason.
My physics professor used a symbol in his notes that I was unfamiliar with, and so far the closest thing I have found to it is the propto. The only difference is that my prof used it vertically, with the open side up. I'm wondering if this is a different symbol entirely, or if he just tipped it...