Krassimir T. Atanassov

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

Volume 16, 2010, Number 3, Pages 25—28

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## Details

### Authors and affiliations

Krassimir T. Atanassov

*Department of Bioinformatics and Mathematical Modelling
IBFBME – Bulg. Academy of Sci.
Acad. G. Bonchev Str. Bl. 105, Sofia-1113, Bulgaria*

### Abstract

An interesting property of arithmetic functions *φ*, *ψ* and *σ* is being discussed and illustrated.

### Keywords

- Arithmetic function
*φ* - Arithmetic function
*ψ* - Arithmetic function
*σ*

### AMS Classification

- 11A25

### References

- Atanassov K., Some assertions on
*φ*and*σ*functions, Bulletin of Number Theory

and Related Topics, Vol. XI (1987), No. 1, 50-63. - Atanassov, K. Note on
*φ*,*ψ*and*σ*functions. Notes on Number Theory and Discrete Mathematics, Vol. 12, 2006, No. 4, 25-28. - Fomenko, A., Statistical Chronology, In Series “Mathematics and Cybernetics”, No. 7, Znanie, Moskow, 1990 (in Russian).
- Nagell T., Introduction to number theory, John Wiley & Sons, New York, 1950.
- Nosovskii, G., A. Fomenko, New Chronology and Conception of the Ancient History of Russia, England and Rome, Moskow Goverment University, Moskow, Vol. 1 and 2, 1996 (in Russian).
- Tabov, J., The Fall of Old Bulgary, Morant, Sofia, 1997 (in Bulgarian).

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## Cite this paper

APAAtanassov, K.T. (2010). Note on *φ*, *ψ* and *σ*-functions. Part 2. Notes on Number Theory and Discrete Mathematics, 16(3), 25-28.

Atanassov, Krassimir T. “Note on *φ*, *ψ* and *σ*-functions. Part 2.” Notes on Number Theory and Discrete Mathematics 16, no. 3 (2010): 25-28.

Atanassov, Krassimir T. “Note on *φ*, *ψ* and *σ*-functions. Part 2.” Notes on Number Theory and Discrete Mathematics 16.3 (2010): 25-28. Print.