!til &modular-forms I've written up my understanding of what modular forms are here: https://graemephi.github.io/posts/modular-forms/ I've tried pretty hard to keep the maths simple and have pictures for the stuff that needs visual intuition. Also, I've come across some pretty good resources for learning this stuff so if nothing else my post will point you at good places to learn further if you, like me, want to know wtf modular forms are