Assignment files.

TOPICS	PROBLEM SETS
Problem set 1: Number theory and regular languages	(PDF)
Problem set 2: Context-free languages	(PDF)
Problem set 3: The Gödel-Turing mindblower	(PDF)
Problem set 4: Computability and complexity	(PDF)
Problem set 5: NP-completeness and more	(PDF)
Problem set 6: Randomness and cryptography	(PDF)