Σ
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Translingual[edit]
Symbol[edit]
Σ
- (mathematics) Σ. Sum over a set of like terms:
- (topology) suspension or reduced suspension
- (mathematics) A class (in the arithmetical hierarchy) of formulae whose outermost unbounded quantifiers are existential quantifiers
Usage notes[edit]
(mathematics): Though there exists a distinct symbol (∑) for the purpose of the mathematical summation, the upper case sigma here is often used for convenience.
Coordinate terms[edit]
See also[edit]
Greek[edit]
Letter[edit]
Σ • (S) (uppercase, lowercase σ)
- The upper case letter sigma (σίγμα), the 18th letter of the modern Greek alphabet.
Numeral[edit]
Σ • (S)
- The number 200 in Greek numerals.
,Σ
- The number 200,000 in Greek numerals.