Abstract
In this paper, by using lower bounds for linear forms in logarithms of algebraic numbers and the theory of continued fractions, we find all Fibonacci numbers that appear in generalized Pell sequences. Some interesting estimations involving generalized Pell numbers, that we believe are of independent interest, are also deduced. This paper continues a previous work that searched for Fibonacci numbers in the Pell sequence.
This work was supported by Projects VRI ID 4689 (University of Cauca) and Colciencias 110371250560.
Acknowledgement
We thank the reviewer for his/her thorough review and highly appreciate the comments and suggestions, which significantly contributed to improving the quality of the publication. J. J. B. was supported in part by Projects VRI ID 4689 (University of Cauca) and Colciencias 110371250560. J. L. H thanks the University of Cauca for support during his Ph.D. studies.
(Communicated by Milan Paštéka)
References
[1] Alekseyev, M. A.: On the intersections of Fibonacci, Pell, and Lucas numbers, Integers 11 (2011), 239–259.10.1515/integ.2011.021Search in Google Scholar
[2] Baker, A.—Davenport, H.: The equations 3x2 – 2 = y2and 8x2 – 7 = z2, Quart. J. Math. Oxford Ser. (2) 20 (1969), 129–137.10.1093/qmath/20.1.129Search in Google Scholar
[3] Bennett, M.—Pintér, Á.: Intersections of recurrence sequences, Proc. Amer. Math. Soc. 143(6) (2015), 2347–2353.10.1090/S0002-9939-2015-12499-9Search in Google Scholar
[4] Bravo, E. F.—Bravo, J. J.: Coincidences in generalized Lucas sequences, Fibonacci Quart. 52(4) (2014), 296–306.Search in Google Scholar
[5] Bravo, J. J.—Gómez, C. A.—Luca, F.: Powers of two as sums of two k-Fibonacci numbers, Miskolc Math. Notes 17(1) (2016), 85–100.10.18514/MMN.2016.1505Search in Google Scholar
[6] Bravo, J. J.—Herrera, J. L.—Luca, F.: On a generalization of the Pell sequence, Math. Bohemica (2020), https://doi.org/10.21136/MB.2020.0098-19.Search in Google Scholar
[7] Bravo, J. J.—Luca, F.: Coincidences in generalized Fibonacci recurrences, J. Number Theory 133 (2013), 2121–2137.10.1016/j.jnt.2012.11.006Search in Google Scholar
[8] Dujella, A.—Pethő, A.: A generalization of a theorem of Baker and Davenport, Quart. J. Math. Oxford Ser. (2) 49(195) (1998), 291–306.10.1093/qmathj/49.3.291Search in Google Scholar
[9] Kiliç, E.: The Binet formula, sums and representations of generalized Fibonacci p-numbers, European J. Combin. 29 (2008), 701–711.10.1016/j.ejc.2007.03.004Search in Google Scholar
[10] Kiliç, E.: On the usual Fibonacci and generalized order-k Pell numbers, Ars Combin. 88 (2008), 33–45.Search in Google Scholar
[11] Kiliç, E.—Taşci, D.: The generalized binet formula, representation and sums of the generalized order-k Pell numbers, Taiwanese J. Math. 10(6) (2006), 1661–1670.10.11650/twjm/1500404581Search in Google Scholar
[12] Koshy, T.: Fibonacci and Lucas Numbers with Applications. Pure and Applied Mathematics, Wiley–Interscience Publications, New York, 2001.10.1002/9781118033067Search in Google Scholar
[13] Koshy, T.: Pell and Pell-Lucas Numbers with Applications, Springer, New York, 2014.10.1007/978-1-4614-8489-9Search in Google Scholar
[14] Marques, D.: The proof of a conjecture concerning the intersection of k-generalized Fibonacci sequences, Bull. Brazilian Math. Soc. 44 (2013), 455–468.10.1007/s00574-013-0021-ySearch in Google Scholar
[15] Matveev, E. M.: An explicit lower bound for a homogeneous rational linear form in the logarithms of algebraic numbers, II, Izv. Ross. Akad. Nauk Ser. Mat. 64(6) (2000), 125–180; translation in Izv. Math. 64(6) (2000), 1217–1269.10.1070/IM1998v062n04ABEH000190Search in Google Scholar
[16] Mignotte, M.: Intersection des images de certaines suites récurrentes linéaires, Theoret. Comput. Sci. 7(1) (1978), 117–122 (in French).10.1016/0304-3975(78)90043-9Search in Google Scholar
[17] Noe, T. D.—Post, J. V.: Primes in Fibonacci n-step and Lucas n-step sequences, J. Integer Seq. 8 (2005), Article 05.4.4.Search in Google Scholar
© 2020 Mathematical Institute Slovak Academy of Sciences
Articles in the same Issue
- Regular papers
- Monadic pseudo BE-algebras
- Quadruple construction of decomposable double MS-algebras
- Fibonacci numbers in generalized Pell sequences
- Solutions of a generalized markoff equation in Fibonacci numbers
- Root separation for polynomials with reducible derivative
- Quadratic refinements of Young type inequalities
- Sharp bounds for the Toader mean of order 3 in terms of arithmetic, quadratic and contraharmonic means
- Integration with respect to deficient topological measures on locally compact spaces
- Differential subordinations and Pythagorean means
- Analogs of Hayman’s Theorem and of logarithmic criterion for analytic vector-valued functions in the unit ball having bounded L-index in joint variables
- Unbounded oscillation of fourth order functional differential equations
- Oscillation criteria for a class of nonlinear discrete fractional order equations with damping term
- Entropy as an integral operator: Erratum and modification
- Unital topology on a unital l-group
- On the topological complexity of Grassmann manifolds
- Properties and methods of estimation for a bivariate exponentiated Fréchet distribution
- Existence and Hyers-Ulam stability results for a class of fractional order delay differential equations with non-instantaneous impulses
- Two semigroup rings associated to a finite set of meromorphic functions
Articles in the same Issue
- Regular papers
- Monadic pseudo BE-algebras
- Quadruple construction of decomposable double MS-algebras
- Fibonacci numbers in generalized Pell sequences
- Solutions of a generalized markoff equation in Fibonacci numbers
- Root separation for polynomials with reducible derivative
- Quadratic refinements of Young type inequalities
- Sharp bounds for the Toader mean of order 3 in terms of arithmetic, quadratic and contraharmonic means
- Integration with respect to deficient topological measures on locally compact spaces
- Differential subordinations and Pythagorean means
- Analogs of Hayman’s Theorem and of logarithmic criterion for analytic vector-valued functions in the unit ball having bounded L-index in joint variables
- Unbounded oscillation of fourth order functional differential equations
- Oscillation criteria for a class of nonlinear discrete fractional order equations with damping term
- Entropy as an integral operator: Erratum and modification
- Unital topology on a unital l-group
- On the topological complexity of Grassmann manifolds
- Properties and methods of estimation for a bivariate exponentiated Fréchet distribution
- Existence and Hyers-Ulam stability results for a class of fractional order delay differential equations with non-instantaneous impulses
- Two semigroup rings associated to a finite set of meromorphic functions