scholarly journals On weak solutions of random differential inclusions

1995 ◽  
Vol 8 (4) ◽  
pp. 393-396
Author(s):  
Mariusz Michta
Keyword(s):  
Probability Measure ◽  
Differential Inclusion ◽  
Weak Solutions ◽  
Differential Inclusions ◽  
Existence Of Solutions ◽  
Initial Condition ◽  
Set Valued Mapping ◽  
Nonempty Compact ◽  
Convex Subsets

In the paper we study the existence of solutions of the random differential inclusion x˙t∈G(t,xt)     P.1,t∈[0,T]-a.e.x0=dμ, where G is a given set-valued mapping value in the space Kn of all nonempty, compact and convex subsets of the space ℝn, and μ is some probability measure on the Borel σ-algebra in ℝn. Under certain restrictions imposed on F and μ, we obtain weak solutions of problem (I), where the initial condition requires that the solution of (I) has a given distribution at time t=0.

scholarly journals Existence Results for Differential Inclusions with Nonlinear Growth Conditions in Banach Spaces

2013 ◽  
Vol 2013 ◽  
pp. 1-7
Author(s):  
Messaoud Bounkhel
Keyword(s):  
Banach Space ◽  
Hilbert Spaces ◽  
Differential Inclusions ◽  
Existence Of Solutions ◽  
Growth Conditions ◽  
Existence Results ◽  
Nonlinear Growth ◽  
Upper Semicontinuous ◽  
Set Valued Mapping ◽  
Sweeping Processes

In the Banach space setting, the existence of viable solutions for differential inclusions with nonlinear growth; that is,ẋ(t)∈F(t,x(t))a.e. onI,x(t)∈S,∀t∈I,x(0)=x0∈S, (*), whereSis a closed subset in a Banach space𝕏,I=[0,T],(T>0),F:I×S→𝕏, is an upper semicontinuous set-valued mapping with convex values satisfyingF(t,x)⊂c(t)x+xp𝒦,∀(t,x)∈I×S, wherep∈ℝ, withp≠1, andc∈C([0,T],ℝ+). The existence of solutions for nonconvex sweeping processes with perturbations with nonlinear growth is also proved in separable Hilbert spaces.

scholarly journals Stieltjes Differential Inclusions with Periodic Boundary Conditions without Upper Semicontinuity

Mathematics ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 55
Author(s):  
Valeria Marraffa ◽  
Bianca Satco
Keyword(s):  
Boundary Conditions ◽  
Differential Inclusions ◽  
Periodic Boundary ◽  
Existence Of Solutions ◽  
Compact Convex ◽  
Upper Semicontinuity ◽  
Periodic Boundary Conditions ◽  
Set Valued Mapping ◽  
Periodic Problems ◽  
The Right

We are studying first order differential inclusions with periodic boundary conditions where the Stieltjes derivative with respect to a left-continuous non-decreasing function replaces the classical derivative. The involved set-valued mapping is not assumed to have compact and convex values, nor to be upper semicontinuous concerning the second argument everywhere, as in other related works. A condition involving the contingent derivative relative to the non-decreasing function (recently introduced and applied to initial value problems by R.L. Pouso, I.M. Marquez Albes, and J. Rodriguez-Lopez) is imposed on the set where the upper semicontinuity and the assumption to have compact convex values fail. Based on previously obtained results for periodic problems in the single-valued cases, the existence of solutions is proven. It is also pointed out that the solution set is compact in the uniform convergence topology. In particular, the existence results are obtained for periodic impulsive differential inclusions (with multivalued impulsive maps and finite or possibly countable impulsive moments) without upper semicontinuity assumptions on the right-hand side, and also the existence of solutions is derived for dynamic inclusions on time scales with periodic boundary conditions.

Near viability for fully nonlinear differential inclusions

2014 ◽  
Vol 12 (10) ◽  
Author(s):  
Irina Căpraru ◽  
Alina Lazu
Keyword(s):  
Differential Inclusion ◽  
Differential Inclusions ◽  
Existence Of Solutions ◽  
Null Controllability ◽  
Dissipative Operator ◽  
Nonlinear Case ◽  
Tangency Condition ◽  
Gronwall’S Lemma ◽  
Nonlinear Differential Inclusions ◽  
Near Viability

AbstractWe consider the nonlinear differential inclusion x′(t) ∈ Ax(t) + F(x(t)), where A is an m-dissipative operator on a separable Banach space X and F is a multi-function. We establish a viability result under Lipschitz hypothesis on F, that consists in proving the existence of solutions of the differential inclusion above, starting from a given set, which remain arbitrarily close to that set, if a tangency condition holds. To this end, we establish a kind of set-valued Gronwall’s lemma and a compactness theorem, which are extensions to the nonlinear case of similar results for semilinear differential inclusions. As an application, we give an approximate null controllability result.

scholarly journals On The Existence of Solutions for Nonlinear Differential Inclusions

2015 ◽  
Vol 61 (1) ◽  
pp. 195-208 ◽  
Author(s):  
Irina Căpraru ◽  
Aurelian Cernea
Keyword(s):  
Cauchy Problem ◽  
Banach Spaces ◽  
Differential Inclusion ◽  
Differential Inclusions ◽  
Existence Of Solutions ◽  
Existence Results ◽  
Nonlinear Differential Inclusions ◽  
Filippov Type

Abstract We consider a Cauchy problem for a nonlinear differential inclusion in separable and nonseparable Banach spaces under Filippov type assumptions and several existence results are obtained.

scholarly journals Relaxation Problems Involving Second-Order Differential Inclusions

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Adel Mahmoud Gomaa
Keyword(s):  
Control Theory ◽  
Boundary Conditions ◽  
Differential Inclusions ◽  
Compact Convex ◽  
Second Order ◽  
Nonempty Compact ◽  
Convex Subsets

We present relaxation problems in control theory for the second-order differential inclusions, with four boundary conditions,u¨(t)∈F(t,u(t),u˙(t))a.e. on[0,1];u(0)=0,  u(η)=u(θ)=u(1)and, withm≥3boundary conditions,u¨(t)∈F(t,u(t),u˙(t))a.e. on[0,1];  u˙(0)=0,  u(1)=∑i=1m-2‍aiu(ξi), where0<η<θ<1,0<ξ1<ξ2<⋯<ξm-2<1andFis a multifunction from[0,1]×ℝn×ℝnto the nonempty compact convex subsets ofℝn. We have results that improve earlier theorems.

scholarly journals Existence of solutions of functional differential inclusions

1992 ◽  
Vol 5 (4) ◽  
pp. 315-323
Author(s):  
A. Anguraj ◽  
K. Balachandran
Keyword(s):  
Fixed Point ◽  
Differential Inclusion ◽  
Existence Of Solutions ◽  
Integral Inclusion ◽  
Functional Differential Inclusion ◽  
Variation Of Parameters ◽  
Set Valued Mapping ◽  
Functional Differential ◽  
Variation Of Parameters Formula ◽  
Functional Differential Inclusions

We prove the existence of solutions of a functional differential inclusion. By using the variation of parameters formula we convert the functional differential inclusion into an integral inclusion and prove the existence of a fixed point of the set-valued mapping with the help of the Kakutani-Bohnenblust-Karlin fixed point theorem.

scholarly journals Existence of solutions of functional stochastic differential inclusions

2002 ◽  
Vol 33 (1) ◽  
pp. 25-34 ◽  
Author(s):  
P. Balasubramaniam
Keyword(s):  
Fixed Point ◽  
Differential Inclusion ◽  
Differential Inclusions ◽  
Existence Of Solutions ◽  
Analysis Approach ◽  
Point Analysis ◽  
Stochastic Differential Inclusions ◽  
Stochastic Differential Inclusion

In this paper, we prove the existence of solutions for functional stochastic differential inclusion via a fixed point analysis approach.

Optimal control of higher order differential inclusions with functional constraints

2020 ◽  
Vol 26 ◽  
pp. 37 ◽  
Author(s):  
Elimhan N. Mahmudov
Keyword(s):  
Optimal Control ◽  
Optimality Conditions ◽  
Differential Inclusion ◽  
Differential Inclusions ◽  
Higher Order ◽  
Second Order ◽  
Sufficient Optimality Conditions ◽  
Functional Constraints ◽  
Complementary Slackness ◽  
Complementary Slackness Conditions

The present paper studies the Mayer problem with higher order evolution differential inclusions and functional constraints of optimal control theory (PFC); to this end first we use an interesting auxiliary problem with second order discrete-time and discrete approximate inclusions (PFD). Are proved necessary and sufficient conditions incorporating the Euler–Lagrange inclusion, the Hamiltonian inclusion, the transversality and complementary slackness conditions. The basic concept of obtaining optimal conditions is locally adjoint mappings and equivalence results. Then combining these results and passing to the limit in the discrete approximations we establish new sufficient optimality conditions for second order continuous-time evolution inclusions. This approach and results make a bridge between optimal control problem with higher order differential inclusion (PFC) and constrained mathematical programming problems in finite-dimensional spaces. Formulation of the transversality and complementary slackness conditions for second order differential inclusions play a substantial role in the next investigations without which it is hardly ever possible to get any optimality conditions; consequently, these results are generalized to the problem with an arbitrary higher order differential inclusion. Furthermore, application of these results is demonstrated by solving some semilinear problem with second and third order differential inclusions.

Existence of solutions for a second order boundary value problem with the Clarke subdifferential

Filomat ◽  
2017 ◽  
Vol 31 (9) ◽  
pp. 2763-2771 ◽  
Author(s):  
Dalila Azzam-Laouir ◽  
Samira Melit
Keyword(s):  
Boundary Value Problem ◽  
Differential Inclusion ◽  
Existence Of Solutions ◽  
Boundary Value ◽  
Second Order ◽  
Clarke Subdifferential ◽  
Lipschitzian Function ◽  
The Clarke Subdifferential

In this paper, we prove a theorem on the existence of solutions for a second order differential inclusion governed by the Clarke subdifferential of a Lipschitzian function and by a mixed semicontinuous perturbation.

scholarly journals Existence of weak solutions to SPDEs with fractional Laplacian and non-Lipschitz coefficients

2021 ◽  
Author(s):  
Shohei Nakajima
Keyword(s):  
Partial Differential Equations ◽  
Differential Equations ◽  
Weak Solutions ◽  
Stochastic Partial Differential Equations ◽  
Fractional Laplacian ◽  
Existence Of Solutions ◽  
Partial Differential ◽  
Continuity Theorem ◽  
Existence Of Weak Solutions ◽  
One Dimensional

AbstractWe prove existence of solutions and its properties for a one-dimensional stochastic partial differential equations with fractional Laplacian and non-Lipschitz coefficients. The method of proof is eatablished by Kolmogorov’s continuity theorem and tightness arguments.

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