A three by three Pascal matrix representations of the generalized Fibonacci and Lucas sequences

In this study, a matrix $R_{v}$ is defined, and two closed form expressions of the matrix $R_{v}^{n}$, for an integer $n\geq 1$, are evaluated by the matrix functions in matrix theory. These expressions satisfy a connection between the generalized Fibonacci and Lucas numbers with the Pascal matrices. Thus, two representations of the matrix $R_{v}^{n}$ and various forms of matrix $(R_{v}+q\triangle I)^{n}$ are studied in terms of the generalized Fibonacci and Lucas numbers and binomial coefficients. By modifying results of $2\times 2$ matrix representations given in the references of our study, we give various $3\times 3$ matrix representations of the generalized Fibonacci and Lucas sequences. Many combinatorial identities are derived asapplications.

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  • [1] H. Belbachir and F. Bencherif, Linear recurrent sequences and powers of a square matrix, Integers, 6 (A12), 2006.
  • [2] H. Belbachir and F. Bencherif, Sums of product of generalized Fibonacci and Lucas numbers, Ars Combin. 110, 33–43, 2013.
  • [3] H. Belbachir and L. Szalay, Fibonacci and Lucas Pascal triangles, Hacet. J. Math. Stat. 45 (5), 1343–1354, 2016.
  • [4] G. Cerda-Morales, On generalized Fibonacci and Lucas numbers by matrix methods, Hacet. J. Math. Stat. 42 (2), 173–179, 2013.
  • [5] Z. Čerin, Alternating sums of Fibonacci products, Atti Semin. Mat. Fis. Univ. Modena Reggio Emilia, 53 (2), 331–344, 2005.
  • [6] Z. Čerin, Properties of odd and even terms of the Fibonacci sequence, Demons. Math. 39 (1), 55–60, 2006.
  • [7] Z. Čerin, Sums of squares and products of Jacobsthal numbers, J. Integer Seq. 10 (7), Art. 2.5, 1–15, 2007.
  • [8] Z. Čerin, Sums of products of generalized Fibonacci and Lucas numbers, Demons. Math. 42 (2), 247–258, 2009.
  • [9] Z. Čerin and G.M. Gianella, On sums of squares of Pell-Lucas numbers, Integers, 6 (A15), 1–16, 2006.
  • [10] Z. Čerin and G.M. Gianella, On sums of Pell numbers, Acc. Sc. Torino-Atti Sc. Fis. 141, 23–31, 2007.
  • [11] N.J. Higham, Functions of matrices. Theory and computation, Society for Industrial and Applied Mathematics, Philadelphia, 2008.
  • [12] N. Irmak and M. Alp, Some identities for generalized Fibonacci and Lucas sequences, Hacet. J. Math. Stat. 42 (4), 331–338, 2013.
  • [13] F. Koken, The Representations of the Fibonacci and Lucas matrices, Iranian J. Sci. Tech., Trans. A: Sci. 43 2443–2448, 2019.
  • [14] F. Koken and D. Bozkurt, On Lucas numbers by the matrix method, Hacet. J. Math. Stat. 39 (4), 471–475, 2010.
  • [15] J. Mc Laughlin, Combinatorial identities deriving from the n-th power of 2x2 matrix, Integers, A19 (4), 1–15, 2004.
  • [16] J. Mc Laughlin and B. Sury, Powers of matrix and combinatorial identities, Integers A13 (5), 1–9, 2005.
  • [17] R. Liu and A.YZ. Wang, Sums of products of two reciprocal Fibonacci numbers, Adv. Difference Equ. 136, 1–26, 2016.
  • [18] E. Lucas, Théorie des fonctions numériques simplement périodiques, Amer. J. Math. 1, 184–240, 1878.
  • [19] R.S. Melham, Lucas sequences and functions of a 3-by-3 matrix, Fibonacci Quart. 37 (2), 111–116, 1999.
  • [20] J.R. Silvester, Fibonacci properties by matrix methods, Math. Gaz. 63 (425), 188–191, 1979.
  • [21] S. Vajda, Fibonacci, Lucas Numbers, and the Golden Section. Theory and Applica- tions. Ellis Horwood Ltd., Chichester; Halsted Press, New York, 1989.
  • [22] A.A. Wani, G.P.S. Rathore, V.H. Badshah and K. Sisodiya, Two-by-two matrix repre- sentation of a generalized Fibonacci sequence, Hacet. J. Math. Stat. 47 (3), 637–648, 2018.
  • [23] Z. Zhang, The linear algebra of the generalized Pascal matrix, Linear Algebra Appl. 250, 51–60, 1997.