C. Lefter

activity

20212024

collaborators

3 papers

math.AP2024

Reaction-diffusion systems in annular domains: source stability estimates with boundary observations

Catalin-George Lefter, Elena-Alexandra Melnig

We consider systems of reaction-diffusion equations coupled in zero order terms, with general homogeneous boundary conditions in domains with a particular geometry (annular type do…

math.AP2022

A Liouville type result and quantization effects on the system $- Δ u = u J^{'} (1 - ∣ u ∣^{2})$ for a potential convex near zero

U. De Maio, R. Hadiji, C. Lefter +1

We consider a Ginzburg-Landau type equation in $R^{2}$ of the form $- Δ u = u J^{'} (1 - ∣ u ∣^{2})$ with a potential function $J$ satisfying weak conditions allowing for example a zero of in…

math.AP2021

Internal controllability of parabolic systems with star and tree like couplings

Catalin-George Lefter, Elena-Alexandra Melnig

We consider systems of parabolic equations coupled in zero order terms in a star-like or a tree-like shape, with an internal control acting in only one of the equations. We obtain…

Reaction-diffusion systems in annular domains: source stability estimates with boundary observations

A Liouville type result and quantization effects on the system −Δu=uJ′(1−∣u∣2) for a potential convex near zero

Internal controllability of parabolic systems with star and tree like couplings

A Liouville type result and quantization effects on the system $- Δ u = u J^{'} (1 - ∣ u ∣^{2})$ for a potential convex near zero