Krassimir Atanassov

Notes on Number Theory and Discrete Mathematics, ISSN 1310-5132

Volume 17, 2011, Number 3, Pages 13—14

**Download full paper: PDF, 96 Kb**

## Details

### Authors and affiliations

*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

Equalities connecting *φ*, *ψ* and *σ*-functions are formulated and proved.

### Keywords

- Arithmetic functions
*φ*,*ψ*and*σ*

### AMS Classification

- 11A25

### References

- Atanassov, K. Note on φ, ψ and σ-functions. Notes on Number Theory and Discrete Mathematics, Vol. 12, 2006, No. 4, 25–28.
- 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.
- Nagell, T. Introduction to Number Theory, John Wiley & Sons, New York, 1950.

## Related papers

## Cite this paper

APAAtanassov, K. (2011). Note on φ, ψ and σ-functions. Part 3. Notes on Number Theory and Discrete Mathematics, 17(3), 13-14.

ChicagoAtanassov, Krassimir. “Note on φ, ψ and σ-functions. Part 3.” Notes on Number Theory and Discrete Mathematics 17, no. 3 (2011): 13-14.

MLAAtanassov, Krassimir. “Note on φ, ψ and σ-functions. Part 3.” Notes on Number Theory and Discrete Mathematics 17.3 (2011): 13-14. Print.