Fuzzy two point boundary value problem with linear system
Abstract
In this manuscript we present two different methods of solving second order linear differential equation that have fuzzy boundary conditions. First, by taking each fuzzy boundary point of the fuzzy boundary value problem (FBVP) as the fuzzy initial point, we will obtain two separate fuzzy initial value problems (FIVPs). Second, we solve each of these FIVP using the system of differential equations. We provide fuzzy solutions for this system based on an extension of the classical solution via Zadeh's Extension Principle. We present an example in order to compare the proposed solution.
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References
P. Diamond and P. Kloeden, Metric spaces of fuzzy sets World Scientific. Singapore: World Scientific, 1994.
H. G. Citil, Comparisons of the exact and the approximate solutions of second-order fuzzy linear boundary value problems. Miskolc Mathematical Notes, 20 (2), 823–837, (2019).
O. Kaleva, Fuzzy differential equations. Fuzzy sets and systems, 24 (3), 301–317, (1987).
T. Allahviranloo and K. Khalilpour, A numerical method for two-point fuzzy boundary value problems. World Applied Sciences Journal, 13 (10), 2137–2147, (2011).
G. Anastassiou, Handbook of analytic - computational methods in applied mathematics. BocaRaton: Chapman and Hall/CRC, 2000.
B. Bede and L. Stefanini, Generalized differentiability of fuzzy-valued functions. Fuzzy Sets and Systems, 230, 119–141, (2013).
W. E. Boyce and R. C. DiPrima, Elementary Differential Equations and Boundary Value Problems. John Wiley and Sons, 2009.
T. Ceylan and N. Altını¸sık,Eigenvalue problem with fuzzy coefficients of boundary conditions. Scholars Journal of Physics, Mathematics and Statistics, 5 (2), 187–192, (2018).
L. C. de Barros, R. C. Bassanezi, and W. A. Lodwick, A first Course in Fuzzy Logic, Fuzzy Dynamical Systems , and Biomathematics: Theory and applications. London: Springer Cham, 2017.
N. Gasilov, S. E. Amrahov, and A. G. Fatullayev, Solution of linear differential equations with fuzzy boundary values. Fuzzy Sets and Systems, 257, 169-183, (2013).
L. T. Gomes, L. C. de Barros, and B. Bede, Fuzzy Differential Equations in Various Approaches. London: Springer Cham, 2015.
H. G. Citil and N. Altını¸sık, On the eigenvalues and the eigenfunctions of the sturm-liouville fuzzy boundary value problem. J. Math. Comput. Sci., 7 (4), 786–805, (2017).
H. G. Citil, The Problem with Fuzzy Eigenvalue Parameter in One of the Boundary Conditions. An International Journal of Optimization and Control: Theories and Applications, 10(2), 159-165, (2020).
H. G. Citil, Comparison Results of Linear Differential Equations with Fuzzy Boundary Values, Journal of Science and Arts, 1(42), 33-48, (2018).
H. G. Citil and N. Altını¸sık,The examination of eigenvalues and eigenfunctions of the sturm-liouville fuzzy problem according to boundary conditions. International Journal of Mathematical Combinatorics, 1, 51–60, (2018).
A. Kandel and W. J. Byatt, Fuzzy differential equations, Proceedings of the International Conference on Cybernetics and Society. Tokyo, Japan, 1213–1216, (1978).
A. Khastan and J. J. Nieto, A boundary value problem for second order fuzzy differential equations. Fuzzy sets and systems, 72 (9-10), 3583–3593, (2010).
G. J. Klir and B. Yuan, Fuzzy Sets and Fuzzy Logic. New Jersey: Prentice Hall, 1995.
R. K. Nagle, E. B. Saff, and A. D. Snider, Fundamentals of Differential Equations and Boundary Value Problems. Pearson, 2017.
M. L. Puri and D. A. Ralescu,Differentials of fuzzy functions, Journal of Mathematical Analysis and Applications. 91 (2), 552–558, (1983).
I. Sadeqi, M. Moradlou, and M. Salehi, On approximate cauchy equation in felbin’s type fuzzy normed linear spaces. Iranian Journal of Fuzzy Systems, 10 (3), 2013, (2013).
L. Stefanini and B. Bede, Generalized hukuhara differentiability of interval-valued functions and interval differential equations. Nonlinear Analysis: Theory, Methods and Applications, 71 (3-4), 1311–1328, (2009).
E. C. Titchmarsh, Eigenfunction expansions associated with second-order differential equations I. 2nd edn. London: Oxford University Press, 1962.
D. S. Watkins, Fundamentals of Matrix Computations. New York: John Wiley and Sons, 2004.
L. A. Zadeh, The concept of a linguistic variable and its application to approximate reasoning-iii. Information Sciences, 8 (3), 199–249, (1975).
M. Hukuhara, Integration des applications mesurables dont la valeur est un compact convexe, Funkcialaj Ekvacioj. 10 (3), 205-223, (1967).
M. T. Mizukoshi and L. C. de Barros and Y. Chalco-Cano and H Roman-Flores and R. C. Bassanezi, Fuzzy differential equations and the extension principle. Information Sciences, 177, 3627-3635, (2007).
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