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.
Greek lc phi.png
φ U+03C6, φ
GREEK SMALL LETTER PHI
υ
[U+03C5]
Greek and Coptic χ
[U+03C7]

TranslingualEdit

Etymology 1Edit

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

SymbolEdit

φ

 
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Wikipedia
  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 2Edit

SymbolEdit

φ

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

GreekEdit

LetterEdit

φ (f) (lowercase, uppercase Φ)

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

See alsoEdit