Abstract
The present paper is devoted to the existence of solution for the Hybrid differential inclusions of the second type. Here, we present the inclusion problem with two multi-valued maps. In addition, it is considered with nonlocal integral boundary condition , where is a multi-valued map. Relative compactness of the set in is used to justify the condensing condition for some created operators. Fixed point theorems connected with the weak compactness manner is utilized to explore the results throughout this paper.
Keywords:
hybrid fractional inclusion; existence and uniqueness; compactness and noncompactness; multi-operators; multi-condition MSC:
26A33; 34A08; 34A12
1. Introduction
Among of a large amount contributions dedicated to study the existence and uniqueness of solution for Hybrid differential equations and inclusions with one multi-valued map, it is worth mentioning the works of Dhage [1,2], Dhage and Lakishmikantham [3] that focused on fixed point theorems to Hybrid operators and their applications. For such example, Ahmad et al. [4] explore the solvability for first and second type of Hybrid equations and inclusions with one multi-valued map.
In fractional analysis field, we focus on studying and improving the solvability of some fractional differential problems with various conditions. For instance, in [5], we studied the existence results to the conjugate fractional differential inclusion type without continuity and compactness conditions which is not studied before. The guideline in this work is the monotonicity of multi-valued operators. In [6], the main results are devoted to three sides of generalization: the first is of antiperiodic, periodic, and almost periodic solutions. The second is the generalization of infinite countable system of fractional differential equation into inclusion type. The last one is the generalization of fractional differential operators with the Mittag-Leffler kernel. The authors in [7] were coming with a specific general formula of fractional differential equations and inclusions and they called this formula by equi-inclusion problem. Furthermore, it should be noted that Alzabut et al. [8] worked great to investigate the novel solvability techniques on the generalized -Caputo fractional inclusion boundary problem. It is also interesting to draw the attention to the work presented by Etemad et al. [9] on the fractional Caputo-Hadamard inclusion problem with sum boundary value conditions by using approximate endpoint property. Continuously, we consider the following Hybrid fractional differential inclusion associated with multi-valued maps Z and E.
where , denotes the Caputo-Fabrizio time-fractional derivative, is a given integrable bounded real valued function. That is: For all there exists a nondecreasing function such that
Recently, Kamenskii et al. [10] studied one kind of the fractional inclusions satisfying the nonlocal boundary condition provided that is a given multi-valued map. The idea here is to improve the boundary condition into the nonlocal integral boundary condition of the form , where is a given multi-valued map. It means that the unknown function is probably starting from varied places.
The diversity of boundary conditions provides many ways to obtain different results. This fact draws the attention to investigate some results the hybrid fractional differential inclusion (1) under the nonlocal integral condition
where denotes the normalization constant depending on using to define the corresponding integral, and is a multi-valued map.
Admittedly, the integral boundary conditions have various applications in chemical engineering, thermoplasticity, underground water flow, and population dynamics. Mias [11] studied the finite difference parabolic equation methods which used nonlocal boundary conditions (specially integral conditions) to model radiowave propagation over electrically large domains. These methods require the computation of time consuming spatial convolution integrals. Erofeenko [12] justified some results on boundary value problems with integral boundary conditions for the modeling of magnetic fields in cylindrical film shells. Arara and Benchohra [13] have focused on the behavior of fuzzy solution for boundary value problem with integral boundary conditions. In fact, boundary value problems involving integral boundary conditions have received considerable attention in recent years.
As far as we know, fractional calculus and its theorems and applications have strong impacts, getting many different results in a lot of modeling, and they are able to make changes to them. A huge number of contributors have been paying attention to some applications for the fractional differentiations and integrations. For example, Salem et al. studied Langevin equations in different situations according to the diversity of conditions (see [14,15,16,17,18]). In the inclusion field, there are some great literatures like the ones in [5,6,7,8,9,19].
For a long time, Krasonleskii Hybrid fixed point theorem and its extensions and generalizations play extremely roles to provide the sufficient conditions for the solvability to the mixed types of nonlinear differential and integral equations and inclusions (see [20,21,22,23] and the references therein).
It should be noted that Caputo-Fabrizio time-fractional derivative is mainly used to study the new fractional modeling with its amazing property (nonsingular kernels). It attracted the interest of the scientific society and numerous articles to skip analyzes of fractional derivatives with weakly singular memories of Riemann-Liouville and Caputo type [24]. In recent years, phenomena modelings have been dissipated by CF-derivative into the new ones that began after the seminal work of Caputo and Fabrizio [25]. On the other side, it is worth noting that the condensing and contraction conditions basically have a relationship with the measure of noncompactness sets. In our knowledge, non-compactness gives the concept of the lack of compactness for the given sets or multi-valued operators.
Here, we present some solvability results for one kind of hybrid inclusions subject to two multi-operators. These results are in case of satisfying nonlocal integral condition involving multi-valued map. The solution of the problem (1) and (2) is assumed in the Banach space while Caputo-Fabrizio time-fractional derivative and integral are well-defined for the functions (Hilbert space).
The reminder is organized to start first with a basic hypothesis presented in the next section. Then, the existence results are observed in the third section into two cases. Compactness case endowed with the variant of a fixed point theorem of O’Regan under slightly weaker condition is shown first. After that, we focus on noncompactness case via Leray-Schauder nonlinear alternatives type theorem. This theorem is associated with the multi-valued version of Krasnoselskii fixed point theorem and justified with the sum of two multi-valued operators in a Banach space. In section four, we explore some applications of adopted results. Finally, section five is formed as a conclusion of main illustrated facts in the present paper.
2. Basic Hypotheses
Ordinarily in this section, we present some basic acquaintances for the assumed Banach space, basics in fractional calculus, Multi-valued mapping and operators, condensing and contraction conditions, compactness and basics of the measure of noncompactness sets and some lemmas and fixed point theorems.
2.1. Setting of Banach Space
Here, we give some facts and properties of the Banach space that sculpt the area of solutions in case of existence. Let
be a Banach space introduced with the norm
Then, we can get the following facts.
Definition 1
([26]). Given Ω to be an open subset of the real number set , and k and ρ are non-negative integers. Then,
- (a)
- The separable Banach space is defined as followswhere is the ordinary derivative of order ρ.
- (b)
- In particular, the Hilbert Banach space is confirmed by if we are taking Hence,
Theorem 1
([26]). Adopt such that . Then, the inequalities thereafter hold
- (i)
- Holder Inequality. If and , then and
- (ii)
- Minkowski Inequality. If , then and
- (iii)
- Imbedding Theorem. If Ω has a finite positive measure and , then and
- (iv)
2.2. Fractional Calculus
Several scientific fields are actually affected by fractional calculus. Due to that, researchers have used this science as a generalization of ordinary calculus in order to get great results and applications (see for example [24,27] and the references therein). Of the utmost importance, we need to talk about some basic hypothesis from fractional calculus [4,28,29] that support our results.
Definition 2
(Riemann-Liouville Integral). For the real order , the Riemann-Liouville fractional integral of a piecewise continuous function is defined by
Definition 3
(Caputo Derivative). The fractional derivative of order α for n-times differentiable map g is defined in Caputo sense by
Caputo-Fabrizio derivative [30,31] is investigated by interchanging the singular kernel by nonsingular kernel in Caputo derivative. For the order , the CF-derivative is endowed with the normalization constant map to get the following formula
Definition 4
(Caputo-Fabrizio Derivative). CF-derivative for the order and is given by
Definition 5
(Caputo-Fabrizio Integral). For the order and , CF-integral is presented by
Lemma 1
([30,31]). Let and be CF-integral and CF-derivative of order . Then, for , the facts come below hold
- 1.
- ,
- 2.
- 3.
Lemma 2.
Let and be the Banach space endowed with the norm
Then, we have the inequality
Proof.
For and , we have
which explains that
This means that the proof is completed. □
2.3. Basics in Multi-Valued Maps
Some important precursors to the fractional differential inclusions formed by the multi-valued properties are brought in this subsection. These facts are confirmed in [32,33].
Let and be two Banach spaces. A multi-valued map is said to be a convex (closed) if for every , then is convex (closed). In addition, it is completely continuous if is relatively compact for every .
The map A is said to be upper semi-continuous if for each closed subset is closed subset of E. That means if the set is open for all open sets . It is lower semi-continuous if for each open subset is an open subset of E. By other ward, A seems to be lower semi-continuous as long as the set is open for all open sets .
A map is presented to be measurable multi-valued if for every the function is measurable function.
Adopt A to be completely continuous function with nonempty compact values. Then, it is upper semi-continuous if and only if its graph is closed: The graph is said to be closed if , then implies that .
Definition 6.
A multi-valued map is called a Caratheodory if for all and , we have
- (1)
- is measurable,
- (2)
- is upper semi-continuous.
In addition of the assumptions (1) and (2), the map A is - Caratheodory if for each there exists satisfying and and non-decreasing map Ł for which:
for all .
2.4. Basics of Contraction and Condensing
Let and . Then, we define from [34,35] the measures of non-compactness sets and in and , respectively, as follows:
where and
where
Let and . Define the metrics
Then, it is interesting to have the following facts:
Definition 7
(Lipschitz Condition). Take as a normed space, and d be the metric map confirmed from the norm. Then, a multi-valued map is adopted as:
- (1)
- γ-Lipschitz if there exists such that:
- (2)
- a contraction if the first statement is held with .
Lemma 3.
Suppose that where Q is a real Banach space and β is the measure of noncompactness sets in Q. Then, the upcoming properties are all satisfied:
- 1.
- .
- 2.
- where and are the closure and convex sets, respectively, of A.
- 3.
- when .
- 4.
- where .
- 5.
- for all .
- 6.
- The map is contraction with constant k if and condensing if
- 7.
- If the map is Lipschitz contraction with constant k, then .
- 8.
- If is bounded, it followsfor all where . Furthermore, if W is equicontinuous on , then is continuous on and
- 9.
- If is bounded and equicontinuous, it follows
- 10.
- All equicontinuous and contraction maps are condensing maps.
- 11.
- Let be a Banach space, and Then, F is relatively compact in if and only if
- (i)
- for every rectangle the set is relatively compact in Σ
- (ii)
- for with , we have
2.5. Fixed Point Theorems and Some Basic Lemmas
Define the spaces
Then, we have the following Lemmas:
Proof.
Operating the CF-integral of order to both sides and applying Lemma 1-(I) lead to
This explains the Equation (6).
Lemma 5.
Taken Σ to be Banach space, is a Caratheodory multi-valued map and is a continuous and linear map. Then, the operator
such that is an operator with closed graph in .
Theorem 2
([36,37]). Assuming that Σ is a Banach space and are, respectively, open and closed subsets of Σ with . If is upper semi-continuous multi condensing mapping such that is bounded, then either
- (i)
- there exist such that , or
- (ii)
- there exists a fixed point .
Theorem 3
([36,37]). Assuming that Σ is a Banach space and Ω and are, respectively, open and closed subsets of Σ with . If are two multi-valued operators such that is bounded and:
- (a1)
- is contraction with constant k,
- (a2)
- is compact and upper semi-continuous,
then either
- (i)
- there exist such that , or
- (ii)
- there exists a fixed point . Hence, the inclusionhas a solution with .
3. Presented Results
Two cases are particularized in the actual section. One of them is endowed with compact hypothesis and the non-compactness is the way to present the other case.
3.1. Compactness Case
The upshot proved here follows the techniques of Theorem 2. For the sake of that, we first need to define some needed concepts.
Let be the multi-operator defined for every by the relation:
where
And define an open subset containing zero by:
Then, the next theorem is embraced.
Theorem 4.
In the vision of assuming that Z, E and Θ are all Caratheodory multi- maps subject to some conditions as come in after:
- satisfying there exist and non-decreasing function with
- satisfying there exist and non-decreasing function with
- satisfying there exist and non-decreasing function with
- There exist positive constants and and map such thatwhere , and
Lemma 6.
The set is relatively compact in .
Proof.
Using Lemma 3-(11), then we take
First, we prove that is relatively compact in . For all there exists such that . Thus,
which tends to that proves the boundedness.
To prove that is equicontinuous, we take such that . Whence
as , which shows the equicontinuity. Now, for , we have
This inequality, boundedness and equicontinuity hypotheses altogether prove the relatively compact in . □
Now, we ready to prove Theorem 4.
Proof of Theorem 4.
Due to Theorem 2, we need to prove that the multi-operator is required as convex, bounded, equicontinuous, upper semi-continuous and condensing in closed, bounded and convex subsets of .
- C1:
- should be convex. Let and which means that there exist, and in whichThese implyTakeimplieswhich the convexity of since , and are all convex.
- C2:
- must be bounded. Let . Then, there exist , and where defined in (10). By using Theorem 1, we getUsing the statement , we getHence,which drives by to
- C3:
- should be equicontinuous. For and , we see thattends to zero as .
- C4:
- has an upper semi-continuous graph. Here we are going through the algorithm of Lemma 5. So, take the linear operator given by (10). Suppose that , and . Claim that . In case of , there exist , and such that . Since is convergent and has a closed graph, then there exist , and such thatTaking makes that . Since is equicontinuous and has a closed graph, then it is an upper semi-continuous operator.
- C5:
3.2. Noncompactness Case
Under this case, the result is surveyed by assuming that the map
is a contraction in measure. To apply Theorem 3, spilt the multi-operator in (9) into two operators defined as
where
Theorem 5.
Let Z, E and Θ be Caratheodory maps satisfying and , respectively. Moreover, consider that the following assumptions hold
- The map Z is contraction in measure with constant Ł (for B is bounded set), we have
- For and Λ defined as in . There is a positive constant K such thatwhere and defined in .
Proof.
Let be an open bounded subset defined by (11) and and be defined by (12) and (13), respectively. Then, according to Theorem 3, we have
- A1:
- is convex. To explain that, let . It means that there exist for , respectively, in whichfor . These followwhich implies the convexity of since are all convex.
- A2:
- is bounded. Let . Then, by using the assumptions , we have
- A3:
- is closed. Backing to Lemma 5. Suppose that , and . Our aim is to prove that . In case that , then there exist , and in which . Since is convergent and has a closed graph. Then, there exist , and such thatTaking , leads to .
- A4:
- is a contraction in measure. For the sake of proving, we use the properties given in Lemmas 3 and 6. Thus,By , we get is a contraction in measure.
- B1:
- is convex. To explain that, let , then there exist for respectively in whichThese followwhich leads to the convexity of since is convex.
- B2:
- is bounded. Let , then by using we have
- B3:
- is equicontinuous. So, for and , we see that:which tends to zero uniformly as
- B4:
- is upper semi continuous. Here, we follow the algorithm of Lemma 5. Suppose that and . Claim that . In case that , then there exists where . Since is convergent and has a closed graph, then there existsTaking makes that . Since is equicontinuous and has a closed graph then, it is formed as upper semi-continuous operator.
It remains to show that the inclusion has a solution with . For that, conform the set as in (11) with:
3.3. Particular Case: Implicit Case
Corollary 1
( Compactness case). In case that and (identity map), the problem (1) becomes of implicit type. Hence, we have
Corollary 2
With nonlocal integral condition, there is a huge number of contributions on implicit fractional differential boundary value problem. For such examples, Borisut et al. [38] explored the solvability of the implicit fractional problem:
where is the Caputo fractional derivative of order is the Riemann-Liouville fractional integral of order p and f is continuous function. Vivek et al. [39] studied the following implicit problem
where is the Hilfer fractional derivative, and . Also, f is a given continuous function, is the left-sided Riemann-Liouville fractional integral of order are real numbers and are prefixed points satisfying . Sousa et al. [40] considered the implicit problem:
where is the − Hilfer fractional derivative, and . Also, f is a given continuous function, is the left-sided Riemann-Liouville fractional integral of order .
In fact, our work presents new extents for some kinds of hybrid operators that have solutions starting from one place into the ones having solutions starting from different places. The secret here is using the non-local integral condition endowed with multi-valued map instead of singular-valued map. Note that, the implicit problems given by Corollaries 1 and 2 have solutions with multi-beginnings while all three implicit problems above have solutions with a unique beginning.
4. Applications
The interesting thing in the analogy is giving related examples of required facts.
Example 1.
Consider the problem
in case that
with taking . Then, by using the fact for all and Lemma 2, we have
Therefore,
and finally,
which means that the assumptions and in Theorem 4 hold. We need to prove also that hold. For that, we need to calculate some values
Example 2.
Consider the problem (15), take defined, respectively, by (16) and (17) in Example 1 and
where , where . Then, as in Example 1, E and Θ are satisfying and , respectively, with
Now, for Z, we have
Due to that, hold with respect to it is easy to see that
In addition and by Lemma 3-(7), since we have
Thus, and if and only if which means that hold. For , take
5. Conclusions
The non-singularity of CF-fractional derivative’s kernel, the basic concepts of Hybrid fractional inclusion and the measure of noncompactness sets have strong effects on the investigated facts. The amazing thing is linking the fractional inclusions to nonlocal-integral condition involving multi-valued map. Applying the relatively compact theorem in gives direct answers for showing the condensing property of some needed operators. We always believe that every generalizations of theorems will make different and strong applications and extents into new fractional modeling.
Author Contributions
All authors contributed equally and significantly in writing this paper. All authors read and approved the final manuscript.
Funding
This project was funded by the Deanship of Scientific Research (DSR), King Abdulaziz University, Jeddah, Saudi Arabia, under grant no. (KEP-PhD-60-130-42). The authors, therefore, acknowledge with thanks DSR technical and financial support.
Institutional Review Board Statement
Not applicable.
Informed Consent Statement
Not applicable.
Data Availability Statement
Not applicable.
Conflicts of Interest
The authors declare that they have no competing of interests.
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