Some convexity properties of Dirichlet s
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Pietro Cerone; Sever S. Dragomir
📂
Article
📅
2009
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John Wiley and Sons
🌐
English
⚖ 151 KB
## Abstract Some basic results for Dirichlet series __ψ__ with positive terms via log‐convexity properties are pointed out. Applications for Zeta, Lambda and Eta functions are considered. The concavity of the function 1/__ψ__ is explored and, as a main result, it is proved that the function 1/__ζ__