Digamma

Greek letters
Α α Alpha	Β β Beta
Γ γ Gamma	Δ δ Delta
Ε ε Epsilon	Ϝ ϝ Digamma
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	Ϻ ϻ San
Ϙ ϙ Qoppa	Ρ ρ Rho
Σ σ Sigma	Τ τ Tau
Υ υ Upsilon	Φ φ Phi
Χ χ Chi	Ψ ψ Psi
Ω ω Omega	Ϡ ϡ Sampi
Greek alphabet

Digamma (upper case Ϝ, lower case ϝ) is an obsolete letter of the Greek alphabet. In the system of Greek numerals it has a value of 6. When used as a numeral, digamma is written using the stigma (Ϛ, ϛ), a ligature of sigma and tau. When used as a letter, it has the shape of an F (hence its name) and the value of a /w/.

Letters that arose from Digamma include the Roman F. Digamma—like Y—derives from the Semitic letter waw.