Symbols and notation
Pi symbol
Lowercase pi usually denotes the circle constant, while uppercase pi can denote multiplication across an indexed collection of factors.
Common notation π≈3.14159; ∏ᵢaᵢ
In one sentence
What does Pi symbol mean?
Lowercase pi usually denotes the circle constant, while uppercase pi can denote multiplication across an indexed collection of factors.
How it is written
π≈3.14159; ∏ᵢaᵢ
A compact example
A circle of radius 3 has circumference 2πr=6π.
Other names and search terms
π, Π, pi, product notation, circle constant.
Clear answers
Questions about Pi symbol
What does Pi symbol mean in mathematics?
Lowercase pi usually denotes the circle constant, while uppercase pi can denote multiplication across an indexed collection of factors.
How is Pi symbol written?
A common notation is π≈3.14159; ∏ᵢaᵢ.
What is an example of Pi symbol?
A circle of radius 3 has circumference 2πr=6π.