Definition from Wiktionary, the free dictionary
See also: ϖ, П [U+041F CYRILLIC CAPITAL LETTER PE], ∏ [U+220F N-ARY PRODUCT], ㄇ [U+3107 BOPOMOFO LETTER M], ㅠ, and Appendix:Variations of "p"
- (mathematics) Product over a set of like terms:
- (mathematics, logic, computer science) A class (in some hierarchy of formulae, like the arithmetical hierarchy or polynomial hierarchy) of those formulae whose outermost quantifiers are universal quantifiers.
- (mathematics): Though there exists a distinct code point (∏) for the purpose of the mathematical product, the upper case pi here continues to be used for convenience.