Abstract
We solve numerically the side Cauchy problem for a 1-D parabolic equation. The initial condition is unknown. This is an ill-posed problem. The main difference with previous results is that our equation is quasilinear, whereas known publications on this topic work only with linear PDEs. The key idea is to minimize a weighted Tikhonov functional with the Carleman Weight Function (CWF) in it. Roughly, given a reasonable bounded set of any size in a reasonable Hilbert space, one can choose the parameter of the CWF in such a way that this functional becomes strictly convex on that set.
Funding source: Army Research Laboratory
Award Identifier / Grant number: W911NF-15-1-0233
Funding source: Army Research Office
Award Identifier / Grant number: W911NF-15-1-0233
Funding source: Office of Naval Research
Award Identifier / Grant number: N00014-15-1-2330
Funding source: Russian Foundation for Basic Research
Award Identifier / Grant number: 14-01-00182-a
Funding statement: The work of the first author was supported by US Army Research Laboratory and US Army Research Office grant W911NF-15-1-0233 and by the Office of Naval Research grant N00014-15-1-2330. The work of the 4th author was supported by grant 14-01-00182-a of Russian Foundation for Basic Research.
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Articles in the same Issue
- Frontmatter
- Inverse problem about two-spectra for finite Jacobi matrices with zero diagonal
- Shape and parameter reconstruction for the Robin transmission inverse problem
- Inverse source problem based on two dimensionless dispersion-current functions in 2D evolution transport equations
- On the null space of a class of Fredholm integral equations of the first kind
- Numerical solution of an elliptic 3-dimensional Cauchy problem by the alternating method and boundary integral equations
- Reconstruction of local volatility for the binary option model
- Determination of finite difference coefficients for the acoustic wave equation using regularized least-squares inversion
- Numerical solution of an ill-posed Cauchy problem for a quasilinear parabolic equation using a Carleman weight function
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Articles in the same Issue
- Frontmatter
- Inverse problem about two-spectra for finite Jacobi matrices with zero diagonal
- Shape and parameter reconstruction for the Robin transmission inverse problem
- Inverse source problem based on two dimensionless dispersion-current functions in 2D evolution transport equations
- On the null space of a class of Fredholm integral equations of the first kind
- Numerical solution of an elliptic 3-dimensional Cauchy problem by the alternating method and boundary integral equations
- Reconstruction of local volatility for the binary option model
- Determination of finite difference coefficients for the acoustic wave equation using regularized least-squares inversion
- Numerical solution of an ill-posed Cauchy problem for a quasilinear parabolic equation using a Carleman weight function
- On a criterion for the solvability of one ill-posed problem for the biharmonic equation