Pin Group - Indefinite Form

Indefinite Form

There are as many as eight different double covers of O(p, q), for p, q ≠ 0, which correspond to the extensions of the center (which is either C2 × C2 or C4) by C2. Only two of them are pin groups—those that admit the Clifford algebra as a representation. They are called Pin(p, q) and Pin(q, p) respectively.

Read more about this topic:  Pin Group

Famous quotes containing the words indefinite and/or form:

    “... indefinite visions of ambition are weak against the ease of doing what is habitual or beguilingly agreeable.”
    —George Eliot [Mary Ann (or Marian)

    “Reason transformed into prejudice is the worst form of prejudice, because reason is the only instrument for liberation from prejudice.”
    —Allan Bloom (1930–1992)