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This article is part of the series Singular Boundary Value Problems for Ordinary Differential Equations.

Open Access Research Article

Existence of Solutions for Fractional Differential Inclusions with Antiperiodic Boundary Conditions

Bashir Ahmad1 and Victoria Otero-Espinar2*

Author Affiliations

1 Department of Mathematics, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia

2 Departamento de Análisis Matemático, Facultad de Matemáticas, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain

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Boundary Value Problems 2009, 2009:625347  doi:10.1155/2009/625347


The electronic version of this article is the complete one and can be found online at: http://www.boundaryvalueproblems.com/content/2009/1/625347


Received:21 January 2009
Revisions received:6 March 2009
Accepted:18 March 2009
Published:4 May 2009

© 2009 The Author(s)

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

We study the existence of solutions for a class of fractional differential inclusions with anti-periodic boundary conditions. The main result of the paper is based on Bohnenblust- Karlins fixed point theorem. Some applications of the main result are also discussed.

1. Introduction

In some cases and real world problems, fractional-order models are found to be more adequate than integer-order models as fractional derivatives provide an excellent tool for the description of memory and hereditary properties of various materials and processes. The mathematical modelling of systems and processes in the fields of physics, chemistry, aerodynamics, electro dynamics of complex medium, polymer rheology, and so forth, involves derivatives of fractional order. In consequence, the subject of fractional differential equations is gaining much importance and attention. For details and examples, see [114] and the references therein.

Antiperiodic boundary value problems have recently received considerable attention as antiperiodic boundary conditions appear in numerous situations, for instance, see [1522].

Differential inclusions arise in the mathematical modelling of certain problems in economics, optimal control, and so forth. and are widely studied by many authors, see [2327] and the references therein. For some recent development on differential inclusions, we refer the reader to the references [2832].

Chang and Nieto [33] discussed the existence of solutions for the fractional boundary value problem:

(11)

In this paper, we consider the following fractional differential inclusions with antiperiodic boundary conditions

(12)

where denotes the Caputo fractional derivative of order , Bohnenblust-Karlin fixed point theorem is applied to prove the existence of solutions of (1.2).

2. Preliminaries

Let denote a Banach space of continuous functions from into with the norm Let be the Banach space of functions which are Lebesgue integrable and normed by

Now we recall some basic definitions on multivalued maps [34, 35].

Let be a Banach space. Then a multivalued map is convex (closed) valued if is convex (closed) for all The map is bounded on bounded sets if is bounded in for any bounded set of (i.e., . is called upper semicontinuous (u.s.c.) on if for each the set is a nonempty closed subset of , and if for each open set of containing there exists an open neighborhood of such that . is said to be completely continuous if is relatively compact for every bounded subset of If the multivalued map is completely continuous with nonempty compact values, then is u.s.c. if and only if has a closed graph, that is, imply In the following study, denotes the set of all nonempty bounded, closed, and convex subset of . has a fixed point if there is such that

Let us record some definitions on fractional calculus [8, 11, 13].

Definition 2.1.

For a function the Caputo derivative of fractional order is defined as

(21)

where denotes the integer part of the real number and denotes the gamma function.

Definition 2.2.

The Riemann-Liouville fractional integral of order for a function is defined as

(22)

provided the right-hand side is pointwise defined on

Definition 2.3.

The Riemann-Liouville fractional derivative of order for a function is defined by

(23)

provided the right-hand side is pointwise defined on

In passing, we remark that the Caputo derivative becomes the conventional derivative of the function as and the initial conditions for fractional differential equations retain the same form as that of ordinary differential equations with integer derivatives. On the other hand, the Riemann-Liouville fractional derivative could hardly produce the physical interpretation of the initial conditions required for the initial value problems involving fractional differential equations (the same applies to the boundary value problems of fractional differential equations). Moreover, the Caputo derivative for a constant is zero while the Riemann-Liouville fractional derivative of a constant is nonzero. For more details, see [13].

For the forthcoming analysis, we need the following assumptions:

(A1)let be measurable with respect to for each , u.s.c. with respect to for a.e. , and for each fixed the set is nonempty,

(A2)for each there exists a function such that for each with , and

(24)

where depends on For example, for we have and hence If then is not finite.

Definition 2.4 ([16, 33]).

A function is a solution of the problem (1.2) if there exists a function such that a.e. on and

(25)

which, in terms of Green's function , can be expressed as

(26)

where

(27)

Here, we remark that the Green's function for takes the form (see [22])

(28)

Now we state the following lemmas which are necessary to establish the main result of the paper.

Lemma 2.5 (Bohnenblust-Karlin [36]).

Let be a nonempty subset of a Banach space , which is bounded, closed, and convex. Suppose that is u.s.c. with closed, convex values such that and is compact. Then G has a fixed point.

Lemma 2.6 ([37]).

Let be a compact real interval. Let be a multivalued map satisfying and let be linear continuous from then the operator is a closed graph operator in

3. Main Result

Theorem 3.1.

Suppose that the assumptions and are satisfied, and

(31)

Then the antiperiodic problem (1.2) has at least one solution on

Proof.

To transform the problem (1.2) into a fixed point problem, we define a multivalued map as

(32)

Now we prove that satisfies all the assumptions of Lemma 2.6, and thus has a fixed point which is a solution of the problem (1.2). As a first step, we show that is convex for each For that, let Then there exist such that for each we have

(33)

Let Then, for each we have

(34)

Since is convex ( has convex values), therefore it follows that

In order to show that is closed for each let be such that in Then and there exists a such that

(35)

As has compact values, we pass onto a subsequence to obtain that converges to in Thus, and

(36)

Hence

Next we show that there exists a positive number such that where Clearly is a bounded closed convex set in for each positive constant If it is not true, then for each positive number , there exists a function with and

(37)

On the other hand, in view of , we have

(38)

where we have used the fact that

(39)

Dividing both sides of (3.8) by and taking the lower limit as , we find that which contradicts (3.1). Hence there exists a positive number such that

Now we show that is equicontinuous. Let with Let and then there exists such that for each we have

(310)

Using (3.8), we obtain

(311)

Obviously the right-hand side of the above inequality tends to zero independently of as Thus, is equicontinuous.

As satisfies the above assumptions, therefore it follows by Ascoli-Arzela theorem that is a compact multivalued map.

Finally, we show that has a closed graph. Let and We will show that By the relation we mean that there exists such that for each

(312)

Thus we need to show that there exists such that for each

(313)

Let us consider the continuous linear operator so that

(314)

Observe that

(315)

Thus, it follows by Lemma 2.6 that is a closed graph operator. Further, we have Since therefore, Lemma 2.6 yields

(316)

Hence, we conclude that is a compact multivalued map, u.s.c. with convex closed values. Thus, all the assumptions of Lemma 2.6 are satisfied and so by the conclusion of Lemma 2.6, has a fixed point which is a solution of the problem (1.2).

Remark 3.2.

If we take where is a continuous function, then our results correspond to a single-valued problem (a new result).

Applications

As an application of Theorem 3.1, we discuss two cases in relation to the nonlinearity in (1.2), namely, has (a) sublinear growth in its second variable (b) linear growth in its second variable (state variable). In case of sublinear growth, there exist functions such that for each In this case, For the linear growth, the nonlinearity satisfies the relation for each In this case and the condition (3.1) modifies to In both the cases, the antiperiodic problem (1.2) has at least one solution on

Examples

(a) We consider and in (1.2). Here, Clearly satisfies the assumptions of Theorem 3.1 with (condition (3.1). Thus, by the conclusion of Theorem 3.1, the antiperiodic problem (1.2) has at least one solution on

(b) As a second example, let be such that and in (1.2). In this case, (3.1) takes the form As all the assumptions of Theorem 3.1 are satisfied, the antiperiodic problem (1.2) has at least one solution on

Acknowledgments

The authors are grateful to the referees for their valuable suggestions that led to the improvement of the original manuscript. The research of V. Otero-Espinar has been partially supported by Ministerio de Educacion y Ciencia and FEDER, Project MTM2007-61724, and by Xunta de Galicia and FEDER, Project PGIDIT06PXIB207023PR.

References

  1. Ahmad, B, Nieto, JJ: Existence results for nonlinear boundary value problems of fractional integrodifferential equations with integral boundary conditions. Boundary Value Problems. 2009, (2009)

  2. Ahmad, B, Sivasundaram, S: Existence and uniqueness results for nonlinear boundary value problems of fractional differential equations with separated boundary conditions. to appear in Dynamic Systems and Applications

  3. Ahmad, B, Nieto, JJ: Existence results for a coupled system of nonlinear functional differential equation with three-point boundary value problem. preprint

  4. Daftardar-Gejji, V, Bhalekar, S: Boundary value problems for multi-term fractional differential equations. Journal of Mathematical Analysis and Applications. 345(2), 754–765 (2008). Publisher Full Text OpenURL

  5. Erjaee, GH, Momani, S: Phase synchronization in fractional differential chaotic systems. Physics Letters A. 372(14), 2350–2354 (2008). Publisher Full Text OpenURL

  6. Gafiychuk, V, Datsko, B, Meleshko, V: Mathematical modeling of time fractional reaction-diffusion systems. Journal of Computational and Applied Mathematics. 220(1-2), 215–225 (2008). Publisher Full Text OpenURL

  7. Ibrahim, RW, Darus, M: Subordination and superordination for univalent solutions for fractional differential equations. Journal of Mathematical Analysis and Applications. 345(2), 871–879 (2008). Publisher Full Text OpenURL

  8. Kilbas, AA, Srivastava, HM, Trujillo, JJ: Theory and Applications of Fractional Differential Equations, North-Holland Mathematics Studies,p. xvi+523. Elsevier Science, Amsterdam, The Netherlands (2006)

  9. Ladaci, S, Loiseau, JJ, Charef, A: Fractional order adaptive high-gain controllers for a class of linear systems. Communications in Nonlinear Science and Numerical Simulation. 13(4), 707–714 (2008). Publisher Full Text OpenURL

  10. Lazarević, MP: Finite time stability analysis of fractional control of robotic time-delay systems. Mechanics Research Communications. 33(2), 269–279 (2006). Publisher Full Text OpenURL

  11. Podlubny, I: Fractional Differential Equations, Mathematics in Science and Engineering,p. xxiv+340. Academic Press, San Diego, Calif, USA (1999)

  12. Rida, SZ, El-Sherbiny, HM, Arafa, AAM: On the solution of the fractional nonlinear Schrödinger equation. Physics Letters A. 372(5), 553–558 (2008). Publisher Full Text OpenURL

  13. Samko, SG, Kilbas, AA, Marichev, OI: Fractional Integrals and Derivatives: Theory and Applications,p. xxxvi+976. Gordon and Breach, Yverdon, Switzerland (1993)

  14. Zhang, S: Existences of solutions for a boundary value problem of fractional order. Acta Mathematica Scientia. 26(2), 220–228 (2006). Publisher Full Text OpenURL

  15. Ahmad, B, Nieto, JJ: Existence and approximation of solutions for a class of nonlinear impulsive functional differential equations with anti-periodic boundary conditions. Nonlinear Analysis: Theory, Methods & Applications. 69(10), 3291–3298 (2008). PubMed Abstract | Publisher Full Text OpenURL

  16. Ahmad, B, Nieto, JJ: Existence of solutions for anti-periodic boundary value problems involving fractional differential equations via Leray-Schauder degree. preprint

  17. Chen, Y, Nieto, JJ, O'Regan, D: Anti-periodic solutions for fully nonlinear first-order differential equations. Mathematical and Computer Modelling. 46(9-10), 1183–1190 (2007). Publisher Full Text OpenURL

  18. Franco, D, Nieto, JJ, O'Regan, D: Anti-periodic boundary value problem for nonlinear first order ordinary differential equations. Mathematical Inequalities & Applications. 6(3), 477–485 (2003). PubMed Abstract | Publisher Full Text OpenURL

  19. Franco, D, Nieto, JJ, O'Regan, D: Existence of solutions for first order ordinary differential equations with nonlinear boundary conditions. Applied Mathematics and Computation. 153(3), 793–802 (2004). Publisher Full Text OpenURL

  20. Liu, B: An anti-periodic LaSalle oscillation theorem for a class of functional differential equations. Journal of Computational and Applied Mathematics. 223(2), 1081–1086 (2009). Publisher Full Text OpenURL

  21. Luo, Z, Shen, J, Nieto, JJ: Antiperiodic boundary value problem for first-order impulsive ordinary differential equations. Computers & Mathematics with Applications. 49(2-3), 253–261 (2005). PubMed Abstract | Publisher Full Text OpenURL

  22. Wang, K, Li, Y: A note on existence of (anti-)periodic and heteroclinic solutions for a class of second-order odes. Nonlinear Analysis: Theory, Methods & Applications. 70(4), 1711–1724 (2009). PubMed Abstract | Publisher Full Text OpenURL

  23. Abbasbandy, S, Nieto, JJ, Alavi, M: Tuning of reachable set in one dimensional fuzzy differential inclusions. Chaos, Solitons & Fractals. 26(5), 1337–1341 (2005). PubMed Abstract | Publisher Full Text OpenURL

  24. Chang, Y-K, Li, W-T, Nieto, JJ: Controllability of evolution differential inclusions in Banach spaces. Nonlinear Analysis: Theory, Methods & Applications. 67(2), 623–632 (2007). PubMed Abstract | Publisher Full Text OpenURL

  25. Frigon, M: Systems of first order differential inclusions with maximal monotone terms. Nonlinear Analysis: Theory, Methods & Applications. 66(9), 2064–2077 (2007). PubMed Abstract | Publisher Full Text OpenURL

  26. Nieto, JJ, Rodríguez-López, R: Euler polygonal method for metric dynamical systems. Information Sciences. 177(20), 4256–4270 (2007). Publisher Full Text OpenURL

  27. Smirnov, GV: Introduction to the Theory of Differential Inclusions, Graduate Studies in Mathematics,p. xvi+226. American Mathematical Society, Providence, RI, USA (2002)

  28. Chang, Y-K, Nieto, JJ: Existence of solutions for impulsive neutral integrodi-differential inclusions with nonlocal initial conditions via fractional operators. Numerical Functional Analysis and Optimization. 30(3-4), 227–244 (2009). Publisher Full Text OpenURL

  29. Chang, Y-K, Nieto, JJ, Li, W-S: On impulsive hyperbolic differential inclusions with nonlocal initial conditions. Journal of Optimization Theory and Applications. 140(3), 431–442 (2009). Publisher Full Text OpenURL

  30. Henderson, J, Ouahab, A: Fractional functional differential inclusions with finite delay. Nonlinear Analysis: Theory, Methods & Applications. 70(5), 2091–2105 (2009). PubMed Abstract | Publisher Full Text OpenURL

  31. Li, W-S, Chang, Y-K, Nieto, JJ: Existence results for impulsive neutral evolution differential inclusions with state-dependent delay. Mathematical and Computer Modelling. 49(9-10), 1920–1927 (2009). Publisher Full Text OpenURL

  32. Ouahab, A: Some results for fractional boundary value problem of differential inclusions. Nonlinear Analysis: Theory, Methods & Applications. 69(11), 3877–3896 (2008). PubMed Abstract | Publisher Full Text OpenURL

  33. Chang, Y-K, Nieto, JJ: Some new existence results for fractional differential inclusions with boundary conditions. Mathematical and Computer Modelling. 49(3-4), 605–609 (2009). Publisher Full Text OpenURL

  34. Deimling, K: Multivalued Differential Equations, de Gruyter Series in Nonlinear Analysis and Applications,p. xii+260. Walter de Gruyter, Berlin, Germany (1992)

  35. Hu, S, Papageorgiou, N: Handbook of Multivalued Analysis, Theory Mathematics and Its Applications, Kluwer Academic Publishers, Dordrecht, The Netherlands (1997)

  36. Bohnenblust, HF, Karlin, S: On a theorem of Ville. Contributions to the Theory of Games. Vol. I, Annals of Mathematics Studies, no. 24, pp. 155–160. Princeton University Press, Princeton, NJ, USA (1950)

  37. Lasota, A, Opial, Z: An application of the Kakutani-Ky Fan theorem in the theory of ordinary differential equations. Bulletin de l'Académie Polonaise des Sciences. Série des Sciences Mathématiques, Astronomiques et Physiques. 13, 781–786 (1965)