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Efficient scheme for a category of variable-order optimal control problems based on the sixth-kind Chebyshev polynomials

open access: yesDemonstratio Mathematica
The main goal of the present study is to introduce an operational collocation scheme based on sixth-kind Chebyshev polynomials (SCPs) to solve a category of optimal control problems involving a variable-order dynamical system (VODS). To achieve this goal,
Sadri Khadijeh   +5 more
doaj   +1 more source

Fractional model of COVID-19 applied to Galicia, Spain and Portugal. [PDF]

open access: yesChaos Solitons Fractals, 2021
Ndaïrou F   +4 more
europepmc   +1 more source

Higher-order nonlocal multipoint q-integral boundary value problems for fractional q-difference equations with dual hybrid terms

open access: yesOpen Mathematics
In this article, we introduce and study a new class of higher-order fractional q-difference equations involving Riemann-Liouville q-derivatives with dual hybrid terms, supplemented with nonlocal multipoint q-integral boundary conditions. The existence of
Alsaedi Ahmed   +2 more
doaj   +1 more source

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