Equivalence Class Structure

Famous quotes containing the words class and/or structure:

    Women ... are completely alone, though they were born and bred upon this soil, as if they belonged to another class in creation.
    “Jennie June” Croly 1829–1901, U.S. founder of the woman’s club movement, journalist, author, editor. F, Demorest’s Illustrated Monthly Mirror of Fashions, pp. 363-4 (December 1870)

    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)