Inverse problems for the perturbed polyharmonic operator with coefficients in Sobolev spaces with non-positive order
Inverse problems for the perturbed polyharmonic operator with coefficients in Sobolev spaces with non-positive order
复制标题
非正序 Sobolev 空间系数的摄动多调和算子的反演问题
DOI:
--
复制
发表时间:
2015
期刊:
影响因子:
--
通讯作者:
Yernat M Assylbekov
中科院分区:
文献类型:
--
作者:
Yernat M Assylbekov
We show that the knowledge of the Dirichlet-to-Neumann map on the boundary of a bounded open set in R n , n ≥ 3 , for the perturbed polyharmonic operator ( − Δ ) m + A · D + q , m ≥ 2 , with 2 n > m , A ∈ W − m − 2 2 , 2 n m and q ∈ W − m 2 , 2 n m , determines the potentials A and q in the set uniquely. The proof is based on a Carleman estimate with linear weights and with a gain of two derivatives and on the property of products of functions in Sobolev spaces.