Useful Equalities, Techniques, and Decision Problems
Reading
Pre-reading quiz.
Where we last left off.
I got it wrong
- Validity
- Falsifiability
- Satisfiability
- Unsatisfiablity
Truth table
Re-draw:
| A | B | B => A | A => (B => A) |
| tt | tt | tt | tt |
| ff | tt | ff | tt |
| tt | ff | tt | tt |
| ff | ff | tt | tt |