Relations and Functions
Crossword
Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.
1
2
3
4
5
Check
Across:
2.
(a, b) ∈ R and (b, c) ∈ R
implies that (a, c) ∈ R.
3.
(a, a) ∈ R ∀ a ∈ X.
4.
(a, b) ∈ R implies (b, a) ∈ R.
Down:
1.
R = X × X
5.
R = φ ⊂ X × X.
OK