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]Ancient Greek
[edit]Alternative forms
[edit]- Ϲ (S)
Etymology
[edit]From Phoenician 𐤔 (š, “šīn”).
Letter
[edit]Σ • (S) (uppercase, nonfinal lowercase σ, final lowercase ς)
- The letter sigma (σίγμα), the 18th letter of the ancient Greek alphabet.
Derived terms
[edit]See also
[edit]- (Greek-script letters) Α α, Β β, Γ γ, Δ δ, Ε ε, Ζ ζ, Η η, Θ θ, Ι ι, Κ κ, Λ λ, Μ μ, Ν ν, Ξ ξ, Ο ο, Π π, Ρ ρ, Σ σ ς, Τ τ, Υ υ, Φ φ, Χ χ, Ψ ψ, Ω ω
- (non-Classical letters) Ϝ ϝ, Ͷ ͷ, Ͱ ͱ, Ϻ ϻ, Ϙ ϙ, Ͳ ͳ
- (punctuation) · ;
- (diacritics) ᾿ ῾ ◌́ ◌̀ ῀ ¨
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.
See also
[edit]Categories:
- Character boxes with images
- Greek and Coptic block
- Greek script characters
- Translingual lemmas
- Translingual symbols
- mul:Mathematics
- mul:Topology
- Ancient Greek terms borrowed from Phoenician
- Ancient Greek terms derived from Phoenician
- Ancient Greek lemmas
- Ancient Greek letters
- Greek lemmas
- Greek letters
- Greek numerals