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:

    “Much of the wisdom of the world is not wisdom, and the most illuminated class of men are no doubt superior to literary fame, and are not writers.”
    —Ralph Waldo Emerson (1803–1882)

    “A child’s self-image is more like a scrapbook than a single snapshot. As the child matures, the number and variety of images in that scrapbook may be far more important than any individual picture pasted inside it.”
    —Lawrence Kutner (20th century)