Fraenkel Set Theory

Famous quotes containing the words set and/or theory:

    “it pleaseth me when I see through the meadows
    The tents and pavilions set up, and great joy have I
    When I see o’er the campana knights armed and horses arrayed.

    And it pleaseth me when the scouts set in flight the folk with
    their goods;
    And it pleaseth me when I see coming together after them an host of
    armed men.”
    —Bertrans De Born (fl. 12th century)

    “The struggle for existence holds as much in the intellectual as in the physical world. A theory is a species of thinking, and its right to exist is coextensive with its power of resisting extinction by its rivals.”
    —Thomas Henry Huxley (1825–95)