Lack of null-controllability for the fractional heat equation and related equations

A Koenig - SIAM Journal on Control and Optimization, 2020 - SIAM
We consider the equation (\partial_t+ρ(-Δ))f(t,x)=1_ωu(t,x), x∈\mathbbR or \mathbbT. We
prove it is not null-controllable if ρ is analytic on a conic neighborhood of \mathbbR_+ and …

Control and numerical approximation of fractional diffusion equations

U Biccari, M Warma, E Zuazua - Handbook of Numerical Analysis, 2022 - Elsevier
The aim of this chapter is to give a broad panorama of the control properties of fractional
diffusive models from a numerical analysis and simulation perspective. We do this by …

Multiplicity of solutions for fractional -laplacian equations

R Abita, U Biccari - Journal of Elliptic and Parabolic Equations, 2023 - Springer
In this paper, we deal with the following elliptic-type problem (-Δ) q (·) s (·) u+ λ V u= α up (·)-
2 u+ β uk (·)-2 u in Ω, u= 0 in R n\Ω, where q (·): Ω¯× Ω¯→ R is a measurable function and s …

Multiplicity of solutions for fractional -Laplacian equations

A Rahmoune, U Biccari - arXiv preprint arXiv:2103.12600, 2021 - arxiv.org
In this paper, we deal with the following elliptic type problem $$\begin {cases}(-\Delta) _ {q
(.)}^{s (.)} u+\lambda Vu=\alpha\left\vert u\right\vert^{p (.)-2} u+\beta\left\vert u\right\vert^{k (.) …

Intelligent Classroom Note-taking Application Software with Higher Performance

L Zhuang - Scalable Computing: Practice and Experience, 2024 - scpe.org
In the process of multimedia teaching, it is common for learners to miss out on important
notes and fail to summarize and organize the course content in a timely manner, resulting in …

Control problems with fractional derivatives and nonlinearities

M Jolić, S Konjik, D Mitrović - IFAC-PapersOnLine, 2024 - Elsevier
This investigation is devoted to control problems that involve fractional derivatives and
nonlinearities. As in any control problem, the goal is to determine control that will govern the …

Control theory for nonlinear fractional dispersive systems

M Jolić, S Konjik, D Mitrović - arXiv preprint arXiv:2212.12692, 2022 - arxiv.org
We consider a terminal control problem for processes governed by a nonlinear system of
fractional ODEs. In order to show existence of the control, we first consider the linear …

A New Approach in Solving Fractional Nonlinear Control Problems

M Jolić, S Konjik, D Mitrović - 2023 International Conference on …, 2023 - ieeexplore.ieee.org
Motivated by the porous media equation as well as population dynamics models, we study a
nonlinear fractional system of differential equations and investigate a control problem for …