Note on φ and ψ functions

V. Kannan and R. Srikanth
Notes on Number Theory and Discrete Mathematics, ISSN 1310–5132
Volume 19, 2013, Number 1, Pages 19–21
Full paper (PDF, 139 Kb)

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Authors and affiliations

V. Kannan
Department of Mathematics, Sastra University
Thanjavur-613 401, India

R. Srikanth
Department of Mathematics, Sastra University
Thanjavur-613 401, India

Abstract

In this paper, we improve the lower bound of the paper [3].

Keywords

• Arithmetic functions φ, ψ and σ

AMS Classification

• 11A25

References

1. Atanassov, K. Note on φ, ψ and σ-functions. Notes on Number Theory and Discrete Mathematics, Vol. 12, 2006, No. 4, 23–24.
2. Atanassov, K. Note on φ, ψ and σ-functions. Part 2. Notes on Number Theory and Discrete Mathematics, Vol. 16, 2010, No. 3, 25–28.
3. Atanassov, K. Note on φ, ψ and σ-functions. Part 3. Notes on Number Theory and Discrete Mathematics, Vol. 17, 2011, No. 3, 13–14.
4. Nagell, T. Introduction to Number Theory, John Wiley & Sons, New York, 1950.