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.

φ U+03C6, φ
GREEK SMALL LETTER PHI
υ
[U+03C5]
Greek and Coptic χ
[U+03C7]
𝜑 U+1D711, 𝜑
MATHEMATICAL ITALIC SMALL PHI
𝜐
[U+1D710]
Mathematical Alphanumeric Symbols 𝜒
[U+1D712]

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

 
English Wikipedia has an article on:
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 2 edit

Symbol edit

φ

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

Ancient Greek edit

Etymology edit

Derived from its majuscule counterpart Φ.

Letter edit

φ (ph) (lowercase, uppercase Φ)

  1. Lower-case phi (φεῖ), the 21st letter of the ancient Greek alphabet. It represented the voiceless aspirated bilabial plosive /pʰ/ and later the voiceless labiodental fricative /f/. It is preceded by υ and followed by χ.

Derived terms edit

See also phi

See also edit

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