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math.AP2025

Positive solutions of elliptic systems with superlinear nonlinearities on the boundary

Shalmali Bandyopadhyay, Maya Chhetri, Briceyda Delgado +2

We consider elliptic systems with superlinear and subcritical boundary conditions and a bifurcation parameter as a multiplicative factor. By combining the rescaling method with deg…

math.AP2025

Existence results for quasimonotone elliptic systems with growth up to critical exponents

Shalmali Bandyopadhyay, Briceyda B. Delgado, Nsoki Mavinga +1

We establish the existence of weak solutions of coupled systems of elliptic partial differential equations with quasimonotone nonlinearities in the differential equation and on the…

math.AP2025

Nonresonance for problems involving -Laplacian equations with nonlinear perturbations

Emer Lopera, Nsoki Mavinga, Diana Sanchez

We study the solvability of -Laplacian problems with nonlinear reaction terms and non-homogeneous Neumann boundary conditions. First, we provide a complete description of th…

math.AP2025

Regularity and explicit estimates for a class of nonlinear elliptic systems

Maya Chhetri, Nsoki Mavinga, Rosa Pardo

We use De Giorgi-Nash-Moser iteration scheme to establish that weak solutions to a coupled system of elliptic equations with critical growth on the boundary are in . M…

math.AP2024

An interpolation approach to a priori estimates for elliptic problems with nonlinearity on the boundary

Maya Chhetri, Nsoki Mavinga, Rosa Pardo

We establish an explicit $L^\infty(\Om)$ a priori estimate for weak solutions to subcritical elliptic problems with nonlinearity on the boundary, in terms of the powers of their $H…

math.AP2021

Bifurcation and Multiplicity Results for Elliptic Problems with Subcritical Nonlinearity on the Boundary

Shalmali Bandyopadhyay, Maya Chhetri, Briceyda B. Delgado +2

We consider an elliptic problem with nonlinear boundary condition involving nonlinearity with superlinear and subcritical growth at infinity and a bifurcation parameter as a factor…