11月16日(木) 15:30 -- 17:00 田沼 一実(大阪教育大学) ``局所化された Dirichlet to Neumann map による導電係数 およびその法線方向微分係数の同時再構成公式'' <Abstarct> We consider the problem of determining conductivity of an isotropic, static conductive medium from the measurements of the electric potential on the boundary and the corresponding current flux across that boundary, that is, from the Dirichlet to Neumann map. We give an explicit formula which reconstructs directly the normal derivative of the conductivity at the point on the boundary from the localized Dirichlet to Neumann map around that point. (Joint work with Gen Nakamura)