φ

φ

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]

Translingual

Etymology 1

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

Symbol

φ

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.

Symbol

φ

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

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Greek

Letter

φ • (f) (lowercase, uppercase Φ)

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

See also

• (Greek-script letters) Α α (A a), Β β (B b), Γ γ (G g), Δ δ (D d), Ε ε (E e), Ζ ζ (Z z), Η η (Ē ē), Θ θ (Th th), Ι ι ℩ (I i ℩), Κ κ (K k), Λ λ (L l), Μ μ (M m), Ν ν (N n), Ξ ξ (X x), Ο ο (O o), Π π (P p), Ρ ρ (R r), Σ σ ς (S s s), Τ τ (T t), Υ υ (U u), Φ φ (Ph ph), Χ χ (Kh kh), Ψ ψ (Ps ps), Ω ω (Ō ō)
• (punctuation) · ;
• (diacritics) ᾿ ῾ ´ ` ῀ ¨ ¯ ˘

Numeral

φ'

1. The number 500 in Greek numerals.

,φ

1. The number 500,000 in Greek numerals.