I don't know what my thoughts on the topic are worth since I haven't opened your book. But from parent, and as someone that does have a decent math background, what might be easiest/most effective could be a simple math appendix. Many book have those, to name a few:

-https://www.amazon.com/Paul-Wilmott-Quantitative-Finance-Set...

-https://www.amazon.com/Short-Course-General-Relativity/dp/03...

Glad I could provide some feedback. I think what you're aiming to do is exceptional. Keep up the good work.