Fraenkel Set Theory

Famous quotes containing the words set and/or theory:

“The dreariest spot in all the land
To Death they set apart;
With scanty grace from Nature’s hand,
And none from that of Art.”
—John Greenleaf Whittier (1807–1892)

“A theory of the middle class: that it is not to be determined by its financial situation but rather by its relation to government. That is, one could shade down from an actual ruling or governing class to a class hopelessly out of relation to government, thinking of gov’t as beyond its control, of itself as wholly controlled by gov’t. Somewhere in between and in gradations is the group that has the sense that gov’t exists for it, and shapes its consciousness accordingly.”
—Lionel Trilling (1905–1975)