We prove that the singularities of a potential in the two and three dimensional Schrödinger equation are the same as the singularities of the Born approximation (Diffraction Tomography), obtained from backscattering inverse data, with an accuracy of $1/2^-$ derivative in the scale of $L^2$-based Sobolev spaces. The key point is the study of the smoothing properties of the quartic term in the Neumann-Born expansion of the scattering amplitude in 3D, together with a Leibniz formula for multiple scattering valid in any dimension.
Reconstruction for an inverse scattering problem with a Kerr type nonlinearity
Research Unit of Applied and Computational Mathematics, University of Oulu(奥卢大学应用与计算数学研究部);Department of Mathematics and Statistics, University of Helsinki(赫尔辛基大学数学与统计系);Department of Mathematics and Statistics, University of Jyväskylä(于韦斯屈莱大学数学与统计系)
Reconstruction via the intrinsic geometric structures of interior transmission eigenfunctions
Southern University of Science and Technology(南方科技大学);Inha University(仁荷大学);Hong Kong Baptist University(香港浸会大学);HKBU Institute of Research and Continuing Education(香港浸会大学研究与继续教育学院)
On a boundary integral solution of a lateral planar Cauchy problem in elastodynamics
Ivan Franko National University of Lviv(利沃夫伊万弗兰科国立大学);Aston University(阿斯顿大学);Johann Radon Institute for Computational and Applied Mathematics (RICAM), Austrian Academy of Sciences(奥地利科学院约翰·拉德纳计算与应用数学研究所)