The Carleman contraction mapping method for quasilinear elliptic equations with over-determined boundary data

Abstract

We propose a globally convergent numerical method to compute solutions to a general class of quasi-linear PDEs with both Neumann and Dirichlet boundary conditions. Combining the quasi-reversibility method and a suitable Carleman weight function, we define a map of which fixed point is the solution to the PDE under consideration. To find this fixed point, we define a recursive sequence with an arbitrary initial term using the same manner as in the proof of the contraction principle. Applying a Carleman estimate, we show that the sequence above converges to the desired solution. On the other hand, we also show that our method delivers reliable solutions even when the given data are noisy. Numerical examples are presented.

References in corpus (6)

• Time reversal in thermoacoustic tomography - an error estimate
• The gradient descent method for the convexification to solve boundary value problems of quasi-linear PDEs and a coefficient inverse problem
• Carleman estimates and the contraction principle for an inverse source problem for nonlinear hyperbolic equation
• Numerical viscosity solutions to Hamilton-Jacobi equations via a Carleman estimate and the convexification method
• A Carleman-based numerical method for quasilinear elliptic equations with over-determined boundary data and applications
• Carleman contraction mapping for a 1D inverse scattering problem with experimental time-dependent data

Cited by in corpus (2)

• Determining initial conditions for nonlinear hyperbolic equations with time dimensional reduction and the Carleman contraction
• A global approach for the inverse scattering problem using a Carleman contraction map