Multiwave Inverse Problems – MultiOnde

Inverse problems have been a very active field of mathematical and numerical research over the last decades, driven by many applications of important economic and societal impact. Im- proving medical imaging techniques or oil prospection methods, designing sensors at the molecular scale, predicting weather patterns, or determining the chemical composition of stars in distant galax- ies, all these fall in the realm of inverse problems. They are intrinsically difficult to solve: this fact is due in part to their very mathematical structure and to the effect that generally only partial data is available. In the last decade, new and exciting directions of research have emerged. On the one hand, the crossing of ideas from neighboring topics such as control theory, shape optimization or geometry has allowed substantial progress in analyzing and solving inverse problems. On the other hand, in an effort to increase the amount of information available for reconstruction, new imaging method- ologies have been invented, that use multi-physics modalities and apriori knowledge of the possible multiscale character of a medium. Our project focuses on multiwave inverse problems which is one of these promising new directions, where our team is at the forefront of international research.