In this work, by means of the generating function method and the De Moivre's formula, we derive some interesting combinatorial identities concerning trigonometric functions and Fibonacci/Lucas numbers. One of them confirms the formula proposed recently by Svinin (2022).
Citation: Yulei Chen, Yingming Zhu, Dongwei Guo. Combinatorial identities concerning trigonometric functions and Fibonacci/Lucas numbers[J]. AIMS Mathematics, 2024, 9(4): 9348-9363. doi: 10.3934/math.2024455
In this work, by means of the generating function method and the De Moivre's formula, we derive some interesting combinatorial identities concerning trigonometric functions and Fibonacci/Lucas numbers. One of them confirms the formula proposed recently by Svinin (2022).
[1] | Z. Akyuz, S. Halici, On some combinatorial identities involving the terms of generalized Fibonacci and Lucas sequences, Hacet. J. Math. Stat., 42 (2013), 431–435. |
[2] | L. Carlitz, A Fibonacci array, Fibonacci Quart., 1 (1963), 17–28. |
[3] | L. Comtet, Advanced Combinatorics: The Art of Finite and Infinite Expansions, Revised and enlarged edition, D. Reidel Publishing Company, Dordrecht, 1974. |
[4] | D. Guo, Summation formulae involving Stirling and Lah numbers, Forum Math., 32 (2020), 1407–1414. https://doi.org/10.1515/forum-2020-0108 doi: 10.1515/forum-2020-0108 |
[5] | D. Guo, W. Chu, Binomial Sums with Pell and Lucas Polynomials, Bull. Belg. Math. Soc. Simon Stevin, 28 (2021), 133–145. https://doi.org/10.36045/j.bbms.200525 doi: 10.36045/j.bbms.200525 |
[6] | D. Guo, W. Chu, Inverse Tangent Series Involving Pell and Pell-Lucas Polynomials, Math. Slovaca, 72 (2022), 869–884. https://doi.org/10.1515/ms-2022-0059 doi: 10.1515/ms-2022-0059 |
[7] | H. W. Gould, Combinatorial Identities: A Standardized Set of Tables Listing 500 Binomial Coefficient Summations, West Virginia, Morgantown Printing and Binding Co., 1972. |
[8] | T. Koshy, Fibonacci and Lucas Numbers with Applications, New York: Wiley, 2001. |
[9] | D. Merlini, R. Sprugnoli, M. C. Verri, The method of coefficients, Amer. Math. Monthly, 114 (2007), 40–57. https://doi.org/10.1080/00029890.2007.11920390 doi: 10.1080/00029890.2007.11920390 |
[10] | A. K. Svinin, Problem H-895, Fibonacci Quart., 60 (2022), P185. |
[11] | R. L. Graham, D. E. Knuth, O. Patashnik, Concrete Mathematics: A Foundation for Computer Science (2nd ed.), Addison–Wesley Publ. Company, Reading, Massachusetts, 1994. |