Formalisms Every Computer Scientist Should Know
Thomas Henzinger teaches this course at ISTA
LaTeX transcribes from the lectures
Timeline
How to Lean 4
Setup Lean
Minimalistic online IDE (no installation needed; just copypaste the code and walk through the proof)
Learn Lean
Natural Number Game (fun interactive tutorial by Kevin Buzzard et al.)
Overview of basic tactics (things you use in proofs, not definitions)
Code from my minicourse (took place at ISTA in 2023-09)