In the present paper, we establish necessary and sufficient conditions for the functions | respectively to be monotonic and completely monotonic on (0, β), where i β N, Ξ± > 0 and Ξ² β₯ 0 are scalars, and Ο (i) (x) are polygamma functions.
Polygamma functions of negative order
β Scribed by Victor S. Adamchik
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 343 KB
- Volume
- 100
- Category
- Article
- ISSN
- 0377-0427
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β¦ Synopsis
Liouville's fractional integration is used to define polygamma functions ~,(")(z) for negative integer n. It is shown that such ~k(n)(z) can be represented in a closed form by means of the first derivatives of the Hurwitz Zeta function. Relations to the Barnes G-function and generalized Glaisher's constants are also discussed. (~) 1998 Elsevier Science B.V. All rights reserved.
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