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:
“And yet out of eternity, a thread
separates itself on the blackness,
a horizontal thread
that fumes a little with pallor upon the dark.”
—D.H. (David Herbert)
“Andrews: You married him only because I told you not to.
Ellie: You’ve been telling me what not to do ever since I can remember.
Andrews: That’s because you’ve always been a stubborn idiot.
Ellie: I come from a long line of stubborn idiots.”
—Robert Riskin (1897–1955)
“The first reading of a Will, where a person dies worth anything considerable, generally affords a true test of the relations’ love to the deceased.”
—Samuel Richardson (1689–1761)