Across
- 5. The relation R◦S is called the ... of R and S
- 6. If the sets have no common elements,what is this set called?
- 8. What is the sequence of statements of which one is intended as a conclusion or premises ?
- 9. What is the denoted by ¬p, is the opposite of the truth value of p.
- 10. The ... of two sets A and B, denoted by A ∪ B, is the set of all elements which belong to A or to B
- 11. A compound proposition that is always true
Down
- 1. It is a declarative sentence that is either true or false, but not both.
- 2. ¬(p∨q) ≡ ¬p∧¬q What is this law called?
- 3. What is the statement p→q is the proposition "if p, then q."?
- 4. The ... of p and q, denoted by p V q, is the proposition "p or q."
- 7. Which set has no elements?
- 12. A function A → B is said to be an ... function if each element of B is the image of some element of A