On the numbers $\phi (a^{n}\pm b^{n})$
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- by A. Rotkiewicz PDF
- Proc. Amer. Math. Soc. 12 (1961), 419-421 Request permission
References
- N. G. Gunderson, Some theorems on the Euler $\phi$-function, Bull. Amer. Math. Soc. 49 (1943), 278–280. MR 7756, DOI 10.1090/S0002-9904-1943-07898-6 U. Scarpis, Period. Mat. vol. 29 (1913) p. 138.
- Geo. D. Birkhoff and H. S. Vandiver, On the integral divisors of $a^n-b^n$, Ann. of Math. (2) 5 (1904), no. 4, 173–180. MR 1503541, DOI 10.2307/2007263 J. V. Uspensky and M. A. Heaslet, Elementary number theory, New York and London, McGraw-Hill, 1939, p. 83, exercise 8.
Additional Information
- © Copyright 1961 American Mathematical Society
- Journal: Proc. Amer. Math. Soc. 12 (1961), 419-421
- MSC: Primary 10.43; Secondary 10.07
- DOI: https://doi.org/10.1090/S0002-9939-1961-0125046-8
- MathSciNet review: 0125046