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Home > Digamma function

where D is the differential operator.

The digamma function, often denoted also ψ₀(x) or even ψ⁰(x), is related to the harmonic numbers in that

where H_n−1 is the (n−1)th harmonic number, and γ is the well-known Euler-Mascheroni constant.

Also see

• Gamma function
• Polygamma function
• Harmonic number

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DigammaDigamma or Wau (upper case , lower case ) 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 (, ), a ligature of sigma and tau. When used as a lette Digamma functionIn mathematics, the digamma function is defined by : where D is the differential operator. The digamma function, often denoted also ψ x or even ψ0 x , is related to the harmonic numbers in that : where H is the n minus;1)th harmonic number, and &g