Translingual

Symbol

Π

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

   

2. (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.

Usage notes

• (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.

See also

• Σ
• Π on Wikipedia.Wikipedia

Greek

Letter

Π • ‎(P) ‎(uppercase, lowercase π)

1. The upper case letter pi (πι), the 16th letter of the modern Greek alphabet.

See also

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

Translingual

Symbol

ϖ

1. (mathematics) diameter of a model κ-plane:

   

2. (astronomy) perihelion, etc.:

   

3. (fluid dynamics) angular frequency of a wave

Usage notes

• This is a glyph variant of lower-case pi.

Greek

Letter

ϖ • ‎(ϖ) ‎(uppercase Π, lowercase π)

1. Rare variant of the lower case letter pi (πι), the 16th letter of the modern Greek alphabet.

See also

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