In mathematics, the horizontal line test is a test used to determine whether a function is injective (i.e., one-to-one).
Read more about Horizontal Line Test: Horizontal Line Test in Calculus, Horizontal Line Test in Set Theory
Famous quotes containing the words horizontal, line and/or test:
“I am a sort of martyr, as you see,
A horizontal monument to patience.
The calves of waitresses parade about
My helpless head upon this sodden floor.
Well, I am down again, but not yet out.
O sweet frustrations, I shall be back for more.”
—Richard Wilbur (b. 1921)
“Any walk through a park that runs between a double line of mangy trees and passes brazenly by the ladies’ toilet is invariably known as “Lover’s Lane.””
—F. Scott Fitzgerald (1896–1940)
“The test of an adventure is that when you’re in the middle of it, you say to yourself, “Oh, now I’ve got myself into an awful mess; I wish I were sitting quietly at home.” And the sign that something’s wrong with you is when you sit quietly at home wishing you were out having lots of adventure.”
—Thornton Wilder (1897–1975)