φ

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Greek lc phi.png
φ U+03C6, φ
GREEK SMALL LETTER PHI
υ
[U+03C5]
Greek and Coptic χ
[U+03C7]
See also: Φ [U+03A6 GREEK CAPITAL LETTER PHI], ф [U+0444 CYRILLIC SMALL LETTER EF], Ф [U+0424 CYRILLIC CAPITAL LETTER EF], Փ [U+0553 ARMENIAN CAPITAL LETTER PIWR], and φ.

Translingual[edit]

Etymology 1[edit]

Named after Ancient Greek Φειδίας(Pheidías) ("Phidias"), who supposedly used the golden ratio in his work, by mathematician Mark Barr.

Symbol[edit]

φ

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  1. (mathematics) The golden ratio, an irrational number with a value of approximately 1.618033988 which expresses the relationship that the sum of two quantities is to the larger quantity as the larger is to the smaller.

Etymology 2[edit]

Symbol[edit]

φ

  1. (mathematics) Euler's totient function, an arithmetic function that counts totatives

Greek[edit]

Letter[edit]

φ ‎(f) ‎(lowercase, uppercase Φ)

  1. The lower case letter phi (φι), the 21st letter of the modern Greek alphabet.

See also[edit]

Numeral[edit]

φ'

  1. The number 500 in Greek numerals.

  1. The number 500,000 in Greek numerals.