ON A FUNCTION ASSOCIATED WITH THE LOGARITHMIC DERIVATIVE OF THE GAMMA FUNCTION
Open Access
- 1 January 1948
- journal article
- Published by Oxford University Press (OUP) in The Quarterly Journal of Mechanics and Applied Mathematics
- Vol. 1 (1) , 29-34
- https://doi.org/10.1093/qjmam/1.1.29
Abstract
The function ψ(k)—log k+1/2k is real for real positive k, and complex for pure imaginary k, its imaginary part being then given by a simple formula. Its real part, considered as a function of 1/k2, varies smoothly through 1/k2 = 0, and is a convenient auxiliary function to use for interpolation purposes; it is also required in connexion with the tabulation of the confluent hypergeometric function. The real part of ψ(k)—log k+1/2k has been evaluated, and is tabulated, as a function of 1/k2 for the range 1/k2 − 1.00(0.01)+1.00, to 8 decimals.Keywords
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