On a conjecture of Mąkowski and Schinzel

• Autorzy: Graeme L. Cohen
• Języki publikacji: EN
• Wydawca: Institute of Mathematics Polish Academy of Sciences
• Czasopismo: Colloquium Mathematicum
• Rocznik: 1997
• Tom: 74
• Numer: 1
• Strony: 1-8

Daty

wydano

1997

otrzymano

1996-09-24

Twórcy

autor

Graeme L. Cohen

• School of Mathematical Sciences, University of Technology, Sydney P.O. Box 123 Broadway, New South Wales 2007, Australia

Bibliografia

• [1] U. Balakrishnan, Some remarks on σ(ϕ(n)), Fibonacci Quart. 32 (1994), 293-296.
• [2] M. Filaseta, S. W. Graham and C. Nicol, On the composition of σ(n) and ϕ(n), unpublished; S. W. Graham, M. Filaseta and C. Nicol, On σϕ(n) (Preliminary Report), Abstracts Amer. Math. Soc. 13.4 (1992), 357.
• [3] R. K. Guy, Unsolved Problems in Number Theory, 2nd ed., Springer, New York, 1994.
• [4] G. H. Hardy, A Course of Pure Mathematics, Cambridge Univ. Press, 1960.
• [5] A. Mąkowski and A. Schinzel, On the functions ϕ(n) and σ(n), Colloq. Math. 13 (1964/65), 95-99.
• [6] C. Pomerance, On the composition of the arithmetic functions σ and ϕ, ibid. 58 (1989), 11-15.