Digamma or wau (uppercase: Ϝ, lowercase: ϝ, numeral: ϛ) is an archaic letter of the Greek alphabet. It originally stood for the sound /w/ but it has remained...

In mathematics, the digamma function is defined as the logarithmic derivative of the gamma function: ψ ( z ) = d d z ln ⁡ Γ ( z ) = Γ ′ ( z ) Γ ( z )...

ultimately descended from digamma and closely resembles it in form. After sound changes eliminated /w/ from spoken Greek, digamma was used only as a numeral...

The hypothetical particle was denoted by the Greek letter Ϝ (pronounced digamma) in the scientific literature, owing to the decay channel in which the...

from the Phoenician waw. The letter was adapted, but split in two, with Digamma or wau ⟨Ϝ⟩ being adapted to represent [w], and the second one being Upsilon...

should not be confused with the "open O" letter. (Ɔ) Ⅎ, a turned F or digamma (digamma inversum) to be used instead of the letter V when denoting the consonantal...

functional values of the classic eta versus epsilon system. The letter Digamma (Ϝ) for the sound /w/ was generally used only in those local scripts where...

symbols in mathematics, in particular for ε/ϵ and π/ϖ. The archaic letter digamma (Ϝ/ϝ/ϛ) is sometimes used. The Bayer designation naming scheme for stars...

^{(0)}(z)=\psi (z)={\frac {\Gamma '(z)}{\Gamma (z)}}} holds where ψ(z) is the digamma function and Γ(z) is the gamma function. They are holomorphic on C ∖ Z...

to denote the unrelated letter waw (/w/) in Pamphylia (the "Pamphylian digamma") and was also the form of beta (/b/) used in Melos. The Ionian letter...

of its Phoenician values, but with different forms: as the Greek letter digamma for the consonant [w], and as the letter upsilon for the vowel [u]. Upsilon...

Ϝ Digamma Ͱ Heta Ϻ San Ϙ Koppa Ͷ Tsan Digamma Ͳ Sampi...

epsilon). A doublet of waw was also borrowed as a consonant for [w] (Ϝ, digamma). In addition, the Phoenician letter for the emphatic glottal /ħ/ (heth)...

The shape of the rune is likely based on Etruscan v ⟨𐌅⟩ ⟨⟩, like Greek Digamma ⟨Ϝ⟩ and Latin ⟨F⟩ ultimately from Phoenician waw ⟨⟩.[citation needed] The...

alphabet were used with the addition of three archaic or local letters: digamma/wau (Ϝ, , originally denoting the sound /w/) for "6", koppa (Ϙ, originally...

not been dropped from the Athenian alphabet (although kept for numbers): digamma, koppa, and sampi. The position of those characters within the numbering...

initialized by plaintext (XORed with w0). In each round of ϝ {\displaystyle \digamma } , the state is transformed via operations τ , M , S {\displaystyle \tau...

employed digamma inconsistently, sometimes allowing it to affect syllable length and meter, sometimes not. The ratio of observance/neglect of digamma varies...

"P", or a "5" turned upside down. As with the numeral usage of stigma (digamma) and Sampi, modern typographical practice normally does not observe a contrast...

6. In this unrelated function, it is a continuation of the old letter digamma (originally Ϝ, cursive form ), which had served as a numeral since antiquity...

in the Laconian dialect of ancient Greek spell her name with an initial digamma (Ϝ, probably pronounced like a w), which rules out any etymology originally...

so the 24-letter alphabet was extended by using three obsolete letters: digamma ϝ (also used are stigma ϛ or, in modern Greek, στ) for 6, qoppa ϙ for 90...

languages in the 1920s and 1930s. It is not to be confused with the turned digamma ⟨Ⅎ ⅎ⟩ or with turned f ⟨ɟ⟩. Epitaph of Fuscus at Arrien-en-Bethmale (Ariège)...

ζ (zeta) but the number 6 was represented a revived ancient letter ′ϝ (digamma), followed by ′ζ which was pushed up from 6th to its ancient position (7th)...

was originally καλϝὸν, and the digamma was still felt enough to lengthen the syllable by position. Since the digamma was being lost during the time when...

The earliest attested form is Aḯdēs (Ἀΐδης), which lacks the proposed digamma. Martin Litchfield West argues instead for an original meaning of "the...

stroke". It is possible that this may have been inspired by the Greek digamma. Ge Kazakh language Uzbek language Azerbaijani language Bashkir language...

Ϝ Digamma Ͱ Heta Ϻ San Ϙ Koppa Ͷ Tsan Digamma Ͳ Sampi...

original Koine Greek use the symbols χξϛ chi xi stigma (or χξϝ with a digamma), while other manuscripts spell out the number in words. In modern popular...

{\displaystyle \psi _{1}(z)={\frac {d}{dz}}\psi (z)} where ψ(z) is the digamma function. It may also be defined as the sum of the series ψ 1 ( z ) = ∑...