Hey, I'm Nathan Dalaklis and this is CHALK! I am a Mathematics PhD student and my videos are primarily "mathematics with chalk" along with some math PhD updates. In these chalk math talks, I go through things that I find interesting in mathematics, whether they be proofs, algorithms, or maybe a look at some higher math concepts. I've always been a fan of chalkboards and of mathematics, so might as well be doing math on a chalkboard :D.