Fraenkel Set Theory

Famous quotes containing the words set and/or theory:

“When parents fail to set appropriate limits, children may feel more vulnerable at night: the aggressive urges that have not been “tamed” by day may be terrifying to a small child alone in the dark.”
—Cathy Rindner Tempelsman (20th century)

“Everything to which we concede existence is a posit from the standpoint of a description of the theory-building process, and simultaneously real from the standpoint of the theory that is being built. Nor let us look down on the standpoint of the theory as make-believe; for we can never do better than occupy the standpoint of some theory or other, the best we can muster at the time.”
—Willard Van Orman Quine (b. 1908)