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)
“Human development is a form of chronological unfairness, since late-comers are able to profit by the labors of their predecessors without paying the same price.”
—Alexander Herzen (1812–1870)
Related Phrases
Related Words