Bounds and completely monotonicity of some functions involving the functions ‘(l) and ”(l)

HIGHLIGHTS

• who: Omelsaad Ahfaf et al. from the Mathematics Department, Faculty of Science, Mansoura University, Mansoura, EgyptJeddah, Saudi Arabia have published the Article: Bounds and Completely Monotonicity of Some Functions Involving the Functions '(l) and ''(l), in the Journal: Symmetry 2022, 14, 1420. of /2022/
• what: For the function 2 ∆(l )=ψ00 (l ) + , the authors investigate the complete monotonicity of the functions H1 (l )=∆(l ) - and H2 (l )=-∆(l ) + l > 0.

SUMMARY

And Preliminaries Citation: Ahfaf, O.; Talat, A.. The Psi (or Digamma) function ψ is defined by_[1] Mahmoud, M. Bounds and . . .

 



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