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Session S09 - Number Theory in the Americas

Wednesday, July 14, 13:00 ~ 13:30 UTC-3

On some exponential Diophantine equations involving sequences

Alain Togbe

Purdue U. Northwest, USA   -   This email address is being protected from spambots. You need JavaScript enabled to view it.

Let $(F_n)_{n\geq 0}$ be the Fibonacci sequence given by $F_0=0,~F_1=1$ and $F_{n}=F_{n-1}+F_{n-2}$ for all $n\geq 2$. We consider the Diophantine equation $$ F_n^x+F_{n+1}^x+\cdots+F_{n+k-1}^x=F_m $$ and determine all nonnegative integer solutions $(x, m, n, k)$ of this equation. Moreover, if we replace the Fibonacci sequence by the Pell sequence and the Padovan sequence, we solve the corresponding equations.

Joint work with E. Tchammou (IMSP, Benin) and F. Luca (Wits, South Africa and UNAM, Mexico).

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