π

π

See also: Π [U+03A0 GREEK CAPITAL LETTER PI], ∏ [U+220F N-ARY PRODUCT], ㄇ [U+3107 BOPOMOFO LETTER M], 丌 [U+4E0C CJK UNIFIED IDEOGRAPH-4E0C], 兀 [U+5140 CJK UNIFIED IDEOGRAPH-5140], ㅠ [U+3160 HANGUL LETTER YU], and Appendix:Variations of "p"

π U+03C0, π GREEK SMALL LETTER PI ← ο [U+03BF] Greek and Coptic ρ → [U+03C1]

Translingual

This mosaic is outside the mathematics building at the Technische Universität Berlin.

When a circle's diameter is 1 unit, its circumference is π units.

When a circle's radius is 1 unit, its circumference is 2π units.

Symbol

π

1. (mathematics) Pi, an irrational constant representing the ratio of the circumference of a circle to its diameter; approximately 3.14159265.
2. (particle physics) pion, pi meson
3. (mathematics) homotopy group
4. (mathematics) prime-counting function

See also

• π on Wikipedia.Wikipedia

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Greek

Letter

π • (p) (lowercase, uppercase Π)

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

See also

• π΄ (p΄)
• ͵π (͵p)
• Appendix:Greek alphabet