Class Number

In mathematics, class number may refer to

  • Class number (group theory), the number of conjugacy classes of a group
  • The size of the ideal class group of a number ring
  • The number of equivalence classes of binary quadratic forms of a given discriminant

Famous quotes containing the words class and/or number:

    “But you must know the class of sweet women—who are always so happy to declare “they have all the rights they want”; “they are perfectly willing to let their husbands vote for them”Mare and always have been numerous, though it is an occasion for thankfulness that they are becoming less so.”
    —Eliza “Mother” Stewart (1816–1908)

    “My idea is that the world outside—the so-called modern world—can only pervert and degrade the conceptions of the primitive instinct of art and feeling, and that our only chance is to accept the limited number of survivors—the one- in-a-thousand of born artists and poets—and to intensify the energy of feeling within that radiant centre.”
    —Henry Brooks Adams (1838–1918)