Krassimir Atanassov
Notes on Number Theory and Discrete Mathematics, ISSN 1310-5132
Volume 20, 2014, Number 3, Pages 50—53
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Department of Bioinformatics and Mathematical Modelling
Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences
Acad. G. Bonchev Str., Bl. 105, Sofia-1113, Bulgaria
Abstract
The inequality
connecting φ, ψ and σ-functions is formulated and proved.
Keywords
- Arithmetic functions φ, ψ and σ
AMS Classification
- 11A25
References
- Mitrinovic, D., J. Sándor. Handbook of Number Theory, Kluwer Academic Publishers, 1996.
- Nagell, T. Introduction to Number Theory, John Wiley & Sons, New York, 1950.
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Cite this paper
Atanassov, K. (2014). Note on φ, ψ and σ-functions. Part 7. Notes on Number Theory and Discrete Mathematics, 20(3), 50-53.