Difference Set

In combinatorics, a difference set is a subset of a group such that the order of is, the size of is, and every nonidentity element of can be expressed as a product of elements of in exactly ways.

Read more about Difference Set:  Basic Facts, Multipliers, Parameters, Known Difference Sets, Application, Generalisations

Famous quotes containing the words difference and/or set:

    “... if the Settlement seeks its expression through social activity, it must learn the difference between mere social unrest and spiritual impulse.”
    —Jane Addams (1860–1935)

    “You have a row of dominoes set up; you knock over the first one, and what will happen to the last one is that it will go over very quickly.”
    —Dwight D. Eisenhower (1890–1969)