Equivalence Class Structure

Famous quotes containing the words class and/or structure:

    “We are the party of all labor.
    The whole earth shall be ours to share
    And every race and craft our neighbor.
    No idle class shall linger there
    Like vultures on the wealth we render
    From field and factory, mill and mine.
    Tomorrow’s sun will rise in splendor
    And light us till the end of time.”
    —Eugène Pottier (1816–1887)

    “If rightly made, a boat would be a sort of amphibious animal, a creature of two elements, related by one half its structure to some swift and shapely fish, and by the other to some strong-winged and graceful bird.”
    —Henry David Thoreau (1817–1862)