
pmid: 30137730
pmc: PMC6010513
Nous énonçons et prouvons de nouvelles inégalités généralisées de type Lyapunov et de type Hartman pour un problème de valeur limite conforme d'ordre $ \alpha \in (1,2] $ avec des non-linéarités mixtes de la forme $ $ \bigl(\ mathbf{T}_{\ alpha} ^{a} x\bigr) (t)+r_{1}(t) \bigl\ vert x(t)\ bigr\ vert ^{\eta -1}x(t)+r_{2}(t)\bigl\vert x(t) \bigr\vert ^{ \delta -1}x(t)=g(t), \quad t\in (a,b), $$ satisfaisant les conditions limites de Dirichlet $x(a)=x(b)=0 $ , où $r_{1}$ , $r_{2}$ et g sont des fonctions intégrables à valeur réelle, et les non-linéarités satisfont les conditions $ 0<\eta <1<\delta <2 $ . De plus, les inégalités de type Lyapunov et de type Hartman sont obtenues lorsque la dérivée conformable $ \mathbf{T}_{\alpha} ^{a}$ est remplacée par une dérivée conformable séquentielle $ \mathbf{T}_{\alpha} ^{a} \circ \mathbf{T}_{\alpha }^{a}$ , $ \alpha \in (1/2,1]$ . Les fonctions potentielles $r_{1}$ , $r_{2}$ ainsi que le terme de forçage g ne nécessitent aucune restriction de signe. Les inégalités obtenues généralisent certains résultats existants dans la littérature.
Declaramos y probamos nuevas desigualdades generalizadas de tipo Lyapunov y de tipo Hartman para un problema de valor límite conformable de orden $\alpha \in (1,2]$ con no linealidades mixtas de la forma $$ \bigl(\mathbf{T}_{\alpha} ^{a} x\bigr) (t)+r_{1}(t) \bigl\vert x(t) \bigr\vert ^{\eta -1}x(t)+r_{2}(t)\bigl\vert x(t) \bigr\vert ^{ \delta -1}x(t)=g(t), \quad t\in (a,b), $$ satisfaciendo las condiciones límite de Dirichlet $x(a)=x(b)=0 $ , donde $r_{1}$ , $r_{2}$ y g son funciones integrables de valor real, y las no linealidades satisfacen las condiciones $ 0<\eta <1<\delta <2 $ . Además, las desigualdades de tipo Lyapunov y de tipo Hartman se obtienen cuando la derivada conformable $\mathbf{T}_{\alpha} ^{a}$ se reemplaza por una derivada conformable secuencial $\mathbf{T}_{\alpha }^{a} \circ \mathbf{T}_{\alpha }^{a}$ , $\alpha \in (1/2,1]$ . Las funciones potenciales $r_{1}$ , $r_{2}$, así como el término forzado g, no requieren restricciones de signo. Las desigualdades obtenidas generalizan algunos resultados existentes en la literatura.
We state and prove new generalized Lyapunov-type and Hartman-type inequalities for a conformable boundary value problem of order $\alpha \in (1,2]$ with mixed non-linearities of the form $$ \bigl(\mathbf{T}_{\alpha }^{a} x\bigr) (t)+r_{1}(t) \bigl\vert x(t) \bigr\vert ^{\eta -1}x(t)+r_{2}(t)\bigl\vert x(t) \bigr\vert ^{ \delta -1}x(t)=g(t), \quad t\in (a,b), $$ satisfying the Dirichlet boundary conditions $x(a)=x(b)=0$ , where $r_{1}$ , $r_{2}$ , and g are real-valued integrable functions, and the non-linearities satisfy the conditions $0<\eta <1<\delta <2$ . Moreover, Lyapunov-type and Hartman-type inequalities are obtained when the conformable derivative $\mathbf{T}_{\alpha }^{a}$ is replaced by a sequential conformable derivative $\mathbf{T}_{\alpha }^{a} \circ \mathbf{T}_{\alpha }^{a}$ , $\alpha \in (1/2,1]$ . The potential functions $r_{1}$ , $r_{2}$ as well as the forcing term g require no sign restrictions. The obtained inequalities generalize some existing results in the literature.
نصرح ونثبت تفاوتات جديدة معممة من نوع Lyapunov ونوع Hartman لمشكلة قيمة حدودية متوافقة من أجل $\alpha \in (1,2 ]$ مع عدم خطية مختلطة من النموذج $$\ bigl(\ mathbf{T} _{\ alpha }^{ a} x\ bigr) (t)+r _{ 1 }( t)\ bigl\ vert x(t)\ bigr\ vert ^{\ eta -1}x(t )+r _{ 2 }( t)\ bigl\ vert x (t)\ bigr\vert x(t)\ bigr\vert ^{\delta -1}x(t )=g(t), \quad t\in (a,b), $$ الوفاء بشروط حدود Dirichlet $x(a )=x(b )=0 $ , where $r _{ 1}, $r _{ 2}, and real - valueble functions, and the nonlinities the nonear t\ in (a, b)\ dela <1 $< 2. علاوة على ذلك، يتم الحصول على متباينات من نوع ليابونوف ونوع هارتمان عند استبدال المشتق المتوافق $\mathbf{T} _{\ alpha }^{ a }$ بمشتق متسلسل متوافق $\mathbf{T} _{\ alpha }^{ a}\ circ \mathbf{T} _{\ alpha }^{ a }$, $\alpha \in (1/2,1 ]$ . لا تتطلب الوظائف المحتملة $r _{ 1 }$ و $r _{ 2 }$ بالإضافة إلى مصطلح الإجبار g أي قيود على اللافتات. تعمم أوجه عدم المساواة التي تم الحصول عليها بعض النتائج الحالية في الأدبيات.
conformable derivative, Fractional ordinary differential equations, Conformable matrix, Green’s function, Integro-Differential Equations, Theory and Applications of Fractional Differential Equations, Mathematical analysis, Quantum mechanics, Conformable derivative, Sturm-Liouville theory, Fractional derivatives and integrals, QA1-939, Differential inequalities involving functions of a single real variable, FOS: Mathematics, Lyapunov inequality, Boundary value problem, Biology, Anomalous Diffusion Modeling and Analysis, Lyapunov function, Ecology, Research, Applied Mathematics, Physics, Hartman inequality, Pure mathematics, mixed nonlinearities, Green's function, Applied mathematics, Nonlocal Partial Differential Equations and Boundary Value Problems, Boundary Value Problems, Inequality, boundary value problem, Modeling and Simulation, FOS: Biological sciences, Physical Sciences, Nonlinear system, Mixed non-linearities, Type (biology), Mathematics
conformable derivative, Fractional ordinary differential equations, Conformable matrix, Green’s function, Integro-Differential Equations, Theory and Applications of Fractional Differential Equations, Mathematical analysis, Quantum mechanics, Conformable derivative, Sturm-Liouville theory, Fractional derivatives and integrals, QA1-939, Differential inequalities involving functions of a single real variable, FOS: Mathematics, Lyapunov inequality, Boundary value problem, Biology, Anomalous Diffusion Modeling and Analysis, Lyapunov function, Ecology, Research, Applied Mathematics, Physics, Hartman inequality, Pure mathematics, mixed nonlinearities, Green's function, Applied mathematics, Nonlocal Partial Differential Equations and Boundary Value Problems, Boundary Value Problems, Inequality, boundary value problem, Modeling and Simulation, FOS: Biological sciences, Physical Sciences, Nonlinear system, Mixed non-linearities, Type (biology), Mathematics
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