Mapping Reducibility + Reductions, what are they?
11:40
Equivalence for Turing Machines is neither Recognizable nor co-Recognizable
4:42
Undecidable Problems: Reducibility (Part 1) | What are Reductions?
18:30
Turing Machines - what are they? + Formal Definition
9:00
Emptiness for Turing Machines is Undecidable
10:53
What Makes Mario NP-Hard? (Polynomial Reductions)
1:16:37
9. Reducibility
10:21
Lecture 41/65: Halting Problem: A Proof by Reduction
17:56