AAQ, the shach says it includes math. That was an answer to the assumption that true wisdom is different – it’s not. It’s the only wisdom they’re talking about; chochmas yevanis is assur.
Rav boruch ber, and all the rest will discuss college, assume that the halacha is that you can’t learn bekevius. Some say that for parnosa it’s different, because it’s a tool for learning. I’m not siding with rav boruch ber – the majority disagreed with him, in fact. My point was that the rishonim and nosei keilim say that you can’t have a kevius in secular studies. No answer you can give me will make me forsake normal halachik process of rishonim and achronim.
Most halachos are complicated. This one is straight forward.