نتایج جستجو برای: generalized fractional derivatives

تعداد نتایج: 323879  

Journal: :Mathematics 2022

The synchronization problem for impulsive fractional-order Cohen–Grossberg neural networks with generalized proportional Caputo fractional derivatives changeable lower limit at any point of impulse is studied. We consider the cases when control input acting continuously as well it instantaneously times. defined global Mittag–Leffler a generalization exponential synchronization. obtained some su...

Journal: :Thermal Science 2022

In this study, the meshless collocation approach is used to determine numerical solution generalized time-fractional Gardner equation. The Crank-Nicolson technique approximate space derivatives, whereas Caputo derivative of fractional order first time derivative. solutions, which show method?s efficacy and accuracy, are pro?vided discussed. shows that our method effective in producing extremely...

Journal: :international journal of nonlinear analysis and applications 0
samad mohseni kolagar department of mathematics, faculty of mathematical sciences, university of mazandaran, babolsar, iran ghasem a. afrouzi department of mathematics, faculty of mathematical sciences, university of mazandaran, babolsar, iran armin hadjian department of mathematics, faculty of basic sciences, university of bojnord, p.o. box 1339, bojnord 94531, iran

in this paper, under appropriate oscillating behaviours of the nonlinear term, we prove some multiplicity results for a class of nonlinear fractional equations. these problems have a variational structure and we find three solutions for them by exploiting an abstract result for smooth functionals defined on a reflexive banach space. to make the nonlinear methods work, some careful analysis of t...

Journal: :bulletin of the iranian mathematical society 0
k. maleknejad school of‎ ‎mathematics‎, ‎iran university of science & technology‎, ‎narmak‎, ‎tehran 16846 13114‎, ‎iran. k. nouri department of mathematics‎, ‎faculty of mathematics‎, ‎statistics‎ ‎and computer sciences‎, ‎semnan university‎, ‎p.o‎. ‎box 35195-363‎, ‎semnan‎, ‎iran. l. torkzadeh department of mathematics‎, ‎faculty of mathematics‎, ‎statistics‎ ‎and computer sciences‎, ‎semnan university‎, ‎p.o‎. ‎box 35195-363‎, ‎semnan‎, ‎iran.

in this paper we apply hybrid functions of general block-pulse‎ ‎functions and legendre polynomials for solving linear and‎ ‎nonlinear multi-order fractional differential equations (fdes)‎. ‎our approach is based on incorporating operational matrices of‎ ‎fdes with hybrid functions that reduces the fdes problems to‎ ‎the solution of algebraic systems‎. ‎error estimate that verifies a‎ ‎converge...

Journal: :iranian journal of numerical analysis and optimization 0
hadi rezazadeh hossein aminikhah amir hossein refahi sheikhani

‎ in this paper, we investigate stability analysis of fractional differential systems equipped with the conformable fractional derivatives. some stability conditions of fractional differential systems are proposed by applying the fractional exponential function and the fractional laplace transform. moreover, we check the stability of conformable fractional lotka-volterra system with the multi-st...

Journal: :Axioms 2021

A fractional model of the Hopfield neural network is considered in case application generalized proportional Caputo derivative. The stability analysis this used to show reliability processed information. An equilibrium defined, which generally not a constant (different than ordinary derivatives and Caputo-type derivatives). We define exponential Mittag–Leffler equilibrium. For this, we extend s...

Journal: :Mathematics 2023

In this article, a high-order time-stepping scheme based on the cubic interpolation formula is considered to approximate generalized Caputo fractional derivative (GCFD). Convergence order for (4−α), where α(0<α<1) of GCFD. The local truncation error also provided. Then, we adopt developed establish difference solution advection–diffusion equation with Dirichlet boundary conditions. Furthe...

Journal: :Foundations 2022

In this paper, we give new Simpson’s type integral inequalities for the class of functions whose derivatives absolute values are s-convex via generalized proportional fractional integrals. Some results in literature particular cases our results.

Journal: :Mathematics 2022

The symmetry group method is applied to study a class of time-fractional generalized porous media equations with Riemann–Liouville fractional derivatives. All point groups and the corresponding optimal subgroups are determined. Then, similarity reduction performed given equation some explicit solutions derived. asymptotic behaviours for also discussed. Through concept nonlinear self-adjointness...

Journal: :Applied sciences 2021

The use of non-local operators, defining Riemann–Liouville or Caputo derivatives, is a very useful tool to study problems involving non-conventional diffusion problems. case electric circuits, ruled by non-integer derivatives capacitors with fractional dielectric permittivity, fairly natural frame relevant applications. We techniques, generalized exponential obtain suitable solutions for this t...

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