CS 535

Fall 2009

Assignment #5

Date Due : Tuesday, November 24

Reading: Chapter 5, pages 107-116 and Chapter 7, pages 145-160

Problems :

1. Prove that P is not contained in DTIME (nk), for any fixed natural number k.

2, Prove that if NSPACE(n) is a subset of P then PSPACE = NP.

3. Page 121, problem 5.15

4. Prove that NSPACE (2 n ) is properly contained in DSPACE (2 (n 2 ) ).

5. Prove Cor. 5.15 on page 111.

6. Page 143, problem 6.20

(You may use the fact here that SAT is NP-complete.)