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On the Diophantine equation $a \left(\frac{b^k - 1}{b - 1}\right) = U_n – U_m$

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초록

Let $b$ be an integer such that $ b \geqslant2$. In this paper, we show that there are only finitely many repdigits in base $b$ which can be written as difference of two generalized Lucas numbers. In addition, we completely solve the considered Diophantine equation with the Pell sequence using the decimal base.

Abstract

Let $b$ be an integer such that $ b \geqslant2$. In this paper, we show that there are only finitely many repdigits in base $b$ which can be written as difference of two generalized Lucas numbers. In addition, we completely solve the considered Diophantine equation with the Pell sequence using the decimal base.

참고문헌 (15)

  1. M. G. Duman, "Padovan numbers as difference of two repdigits, Indian", Journal of Pure and Applied Mathematics (2023)[DOI]
  2. B. Faye, "Pell and Pell-Lucas numbers with only one distinct digit", Ann. Math. Inform, 45, pp.55~60 (2015)
  3. R. Keskin, "Repdigits as the difference of two Pell or Pell-Lucas numbers", Korean J. Math, 31(1), pp.63~73 (2023)
  4. B. Edjeou, "Pell and Pell-Lucas numbers as the difference of two repdigits", Afr. Mat, 34(4) (2023)
  5. Z. Siar, "Repdigits base b as the difference of two Fibonacci numbers", J. Math. Study, 55(1), pp.84~94 (2022)
  6. F. Luca, "Fibonacci and Lucas numbers with only one distinct digit", Port. Math, 57(02), pp.243~254 (2000)
  7. F. Erduvan, "Fibonacci and Lucas numbers as the difference of two repdigits", Rend. Circ. Mat. Palermo II, 71, pp.575~589 (2021)
  8. P. Ray, "Repdigits as difference of two Fibonacci or Lucas numbers", Mat. Stud, 56, pp.124~132 (2021)
  9. P. Ribenboim, "My Numbers, My Friends: Popular Lectures on Number Theory" (2000), Springer
  10. K. N. Ad´edji, "Padovan and Perrin Numbers as Products of Two Generalized Lucas Numbers", Arch. Math. (Brno), 59, pp.351~373 (2023)
  11. E. M. Matveev, "An explicit lower bound for a homogeneous rational linear form in logarithms of algebraic numbers II", Izv. Math, 64(6), pp.1217~1269 (2000)
  12. A. Baker, "The equations 3x2 − 2 = y2 and 8x2 − 7 = z2", Quart.J of Math. Ser, 20(2), pp.129~137 (1969)
  13. A. Dujella, "A generalization of a theorem of Baker and Davenport", Quart. J. Math. Oxford Ser, 49(3), pp.291~306 (1998)
  14. J.J. Bravo, "Powers of two as sums of two k-Fibonacci numbers", Miskolc Math. Notes, 17(1), pp.85~100 (2016)
  15. S. G. Sanchez, "Linear combinations of factorials and S-units in a binary recurrence sequence", Ann. Math. Qu´e, 38, pp.169~188 (2014)

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