Carleman estimates with two large parameters for second order operators and applications to elasticity with residual stress

Victor Isakov, and Nanhee Kim. "Carleman estimates with two large parameters for second order operators and applications to elasticity with residual stress." Applicationes Mathematicae 35.4 (2008): 447-465. <http://eudml.org/doc/279946>.

@article{VictorIsakov2008,
abstract = {We derive Carleman type estimates with two large parameters for a general partial differential operator of second order. The weight function is assumed to be pseudo-convex with respect to the operator. We give applications to uniqueness and stability of the continuation of solutions and identification of coefficients for the Lamé system of dynamical elasticity with residual stress. This system is anisotropic and cannot be principally diagonalized, but it can be transformed into an "upper triangular" form. The use of two large parameters is essential for obtaining our results without smallness assumptions on the residual stress. In the proofs we use the classical technique of differential quadratic forms combined with a special partitioning of these forms and demonstrating positivity of terms containing highest powers of the second large parameter.},
author = {Victor Isakov, Nanhee Kim},
journal = {Applicationes Mathematicae},
keywords = {inverse problems; continuation and prolongation of solutions; linear elasticity with initial stresses},
language = {eng},
number = {4},
pages = {447-465},
title = {Carleman estimates with two large parameters for second order operators and applications to elasticity with residual stress},
url = {http://eudml.org/doc/279946},
volume = {35},
year = {2008},
}

TY - JOUR
AU - Victor Isakov
AU - Nanhee Kim
TI - Carleman estimates with two large parameters for second order operators and applications to elasticity with residual stress
JO - Applicationes Mathematicae
PY - 2008
VL - 35
IS - 4
SP - 447
EP - 465
AB - We derive Carleman type estimates with two large parameters for a general partial differential operator of second order. The weight function is assumed to be pseudo-convex with respect to the operator. We give applications to uniqueness and stability of the continuation of solutions and identification of coefficients for the Lamé system of dynamical elasticity with residual stress. This system is anisotropic and cannot be principally diagonalized, but it can be transformed into an "upper triangular" form. The use of two large parameters is essential for obtaining our results without smallness assumptions on the residual stress. In the proofs we use the classical technique of differential quadratic forms combined with a special partitioning of these forms and demonstrating positivity of terms containing highest powers of the second large parameter.
LA - eng
KW - inverse problems; continuation and prolongation of solutions; linear elasticity with initial stresses
UR - http://eudml.org/doc/279946
ER -