Omicron

From Free net encyclopedia

[[Image:Greek alphabet {{{letter|alpha-omega}}}.png| 200px|center]]
Greek alphabet
Α α Alpha Β β Beta
Γ γ Gamma Δ δ Delta
Ε ε Epsilon Ζ ζ Zeta
Η η Eta Θ θ Theta
Ι ι Iota Κ κ Kappa
Λ λ Lambda Μ μ Mu
Ν ν Nu Ξ ξ Xi
Ο ο Omicron Π π Pi
Ρ ρ Rho Σ σ ς Sigma
Τ τ Tau Υ υ Upsilon
Φ φ Phi Χ χ Chi
Ψ ψ Psi Ω ω Omega
obsolete letters
Image:Greek alphabet digamma2.png Digamma Image:Greek alphabet san.png San
Image:Greek alphabet qoppa.png Qoppa Image:Greek alphabet sampi.png Sampi
Image:Greek alphabet stigma.png Stigma Image:Greek alphabet sho.png Sho

Omicron (upper case Ο, lower case ο, literally "small o") is the 15th letter of the Greek alphabet. In the system of Greek numerals it has a value of 70. It is not used in mathematics because it is indistinguishable from the latin letter O. Indeed, it is not widely used because of confusion with the digit 0.

The upper-case letter Ο is used as a symbol for:

  • The Big O notation, representing the asymptotic rate of growth of a function in mathematics.als:Ο

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