The aim of this work is to obtain the so-called standard lemmas on irrationality bases using the principles of Chudnovsky and then apply them to obtain conditional irrationality measures for values of the digamma function.
Transcendental values of the digamma function
β Scribed by M. Ram Murty; N. Saradha
- Publisher
- Elsevier Science
- Year
- 2007
- Tongue
- English
- Weight
- 168 KB
- Volume
- 125
- Category
- Article
- ISSN
- 0022-314X
No coin nor oath required. For personal study only.
β¦ Synopsis
Let Ο(x) denote the digamma function, that is, the logarithmic derivative of Euler's -function. Let q be a positive integer greater than 1 and Ξ³ denote Euler's constant. We show that all the numbers Ο(a/q) + Ξ³, (a, q) = 1, 1 a q, are transcendental. We also prove that at most one of the numbers Ξ³, Ο(a/q), (a, q) = 1, 1 a q,
π SIMILAR VOLUMES
The aim of this work is to find "good" approximations to the Digamma function Ξ¨ . We construct an infinite family of "basic" functions {I a , a β [0, 1]} covering the Digamma function. These functions are shown to approximate Ξ¨ locally and asymptotically, and it is shown that for any x β R + , there
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