Undecidable Problems: Reducibility (Part 2) | A Sample Reduction Share: Download MP3 Similar Tracks 9. Reducibility MIT OpenCourseWare Undecidable Problems: Reducibility (Part 1) | What are Reductions? lydia Nonregular languages: How to use the Pumping Lemma lydia What is a polynomial-time reduction? (NP-Hard + NP-complete) Easy Theory The Halting Problem: The Unsolvable Problem lydia 8. Undecidability MIT OpenCourseWare Turing Machines + Decidability in 3 Hours (TM, Variants, Church-Turing, Decidability) Easy Theory Mozart - Classical Music for Working, Studying & Brain Power HALIDONMUSIC Mapping Reducibility + Reductions, what are they? Easy Theory 16. Complexity: P, NP, NP-completeness, Reductions MIT OpenCourseWare 7. Decision Problems for Automata and Grammars MIT OpenCourseWare Why is the Halting Problem Undecidable? Easy Theory Acceptance for Turing Machines is Undecidable, but Recognizable Easy Theory Biggest Puzzle in Computer Science: P vs. NP Quanta Magazine L17: Using Reductions to Prove Language Undecidable UC Davis Lecture 41/65: Halting Problem: A Proof by Reduction hhp3 Lecture 32/65: Decidability and Decidable Problems hhp3 Lecture 40/65: Reducibility: A Technique for Proving Undecidability hhp3 Regular Languages: Nondeterministic Finite Automaton (NFA) lydia