18.404J/6.840J The Theory of Computation(Fall 2020, MIT OCW). Instructor: Prof. Michael Sipser. This course emphasizes computability and computational complexity theory. Topics include regular and context-free languages, decidable and undecidable problems, reducibility, recursive function theory, time and space measures on computation, completeness, hierarchy theorems, inherently complex problems, oracles, probabilistic computation, and interactive proof systems.
(from ocw.mit.edu)

18.404J/6.840J The Theory of Computation (Fall 2020)
Instructor: Prof. Michael Sipser. Lecture Notes. Assignments: Problem Sets (No Solutions). Exams (No Solutions). This course emphasizes computability and computational complexity theory.