Cartesian Closed Categories

Famous quotes containing the words closed and/or categories:

    Don: Why are they closed? They’re all closed, every one of them.
    Pawnbroker: Sure they are. It’s Yom Kippur.
    Don: It’s what?
    Pawnbroker: It’s Yom Kippur, a Jewish holiday.
    Don: It is? So what about Kelly’s and Gallagher’s?
    Pawnbroker: They’re closed, too. We’ve got an agreement. They keep closed on Yom Kippur and we don’t open on St. Patrick’s.
    Billy Wilder (b. 1906)

    All cultural change reduces itself to a difference of categories. All revolutions, whether in the sciences or world history, occur merely because spirit has changed its categories in order to understand and examine what belongs to it, in order to possess and grasp itself in a truer, deeper, more intimate and unified manner.
    Georg Wilhelm Friedrich Hegel (1770–1831)