Σ

Unicode name	GREEK CAPITAL LETTER SIGMA
Codepoint	U+03A3
Ρ ← Greek and Coptic → Τ

See also ∑, Ʃ, and ⵉ

Translingual

Symbol

Σ

1. (mathematics) Σ. Sum over a set of like terms:

   $\sum_{n=1}^2 n^2 = 1 + 4 = 5$

Usage notes

(mathematics): Though there exists a distinct symbol (∑) for the purpose of the mathematical summation, the upper case sigma here is often used for convenience.

See also

• Σ on Wikipedia.Wikipedia

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Greek

Letter

Σ (uppercase, lowercase σ)

1. The upper case letter sigma (σίγμα), the 18th letter of the modern Greek alphabet.

See also

• Greek script: Αα Ββ Γγ Δδ Εε Ζζ Ηη Θθ Ιι Κκ Λλ Μμ Νν Ξξ Οο Ππϖ Ρρ Σσς Ττ Υυ Φφ Χχ Ψψ Ωω

Numeral

Σ'

1. The number 200 in Greek numerals.

,Σ

1. The number 200,000 in Greek numerals.