CMSC 452 Slides. Dates for the future are guesswork

INTRO AND REGULAR LANGS

Jan 28: Admin, Intro to Theory of Comp

Jan 28 DFAs

Jan 30 DFAs for Arithmetic Tricks

Jan 30 DFA Closure

Feb 4 NFAs

Feb 4 NFA Closure

Feb 6 Number of States

Feb 6 Small NFAs

Feb 11 Reg Expressions (regex)

Feb 11 HW02 solutions

Feb 13-18 regex closure

Feb 18-20 Proving Langs Not Reg

Feb 25 The 3-4-5 problem

Feb 25,27 CFL's

Feb 27 HW03 sol

Feb 27 HW04 sol

March 4 CFG's For Finite Unary Languages

NOT ON FINAL Syn Correct C Programs Undecdable?

March 6 HW05 sol

March 11 CFL in P

March 13 Context Sensitive Languages

OPTIONAL Size of Descriptions of Grammars

OLD MIDTERM

GUIDELINES FOR MIDTERM

March 25 Mid Review Reg, Mid Review CFL

March 27 hw06sol, hw07sol

April 1 Midterm1

April 3 Midterm Solutions

P, NP, ETC.

OPTIONAL TMtalk- prob in the other slides

April 3,8 DTIME, P, EXP, NP SLIDES

April 8 More on NPC

April 15,17 Cook-Levin Thm

April 17 hw10 Solutions

NOT COVERED IN CLASS SO NOT ON FINAL April 22 Closure Properties of P and NP

NOT ON FINAL April 22 Functions and Sets

April 24 Is Factoring NPC?

April 24 CLIQ TO SAT

April 24 Hw9 Solutions

OPTIONAL Is Graph Isomorphism NPC?

OPTIONAL SAT Variants and Cryarithms

OPTIONAL SAT SOLVERS

OPTIONAL Sane Reduction

DECIDABLE & UNDECIDABLE SETS

April 29 Decidable and Undecidable

April 29 More on Hilbert's 10th Problem

April 29 PAPER on Hilbert's 10th problem

May 1 Alternative Proof that HALT is undec

May 1 (SIS and beyond NOT on final) WS1S Decidable

May 1 Link to the MONA website-dec of WS2S

NOT ON FINAL May 6 Quantum Games

NOT ON FINAL May 6 Godel's Inc Theorem

May 8 hw11 solutions

OPTIONAL Proof of 4-square theorem

May 8 hw12 solutions

May 8 Funny Math Things and hw13sol

May 8 WS1S Decidable- Finish it up

Predictions

Review for final: REG

Review for final: CFG

Review for final: P and NP

Review for final: DEC and UNDEC