# On 2D Inverse Problems/Schrodinger equation

The conductivity equation ${\displaystyle \Delta _{\gamma }u=\nabla \cdot (\gamma \nabla u)=0}$
is equivalent to: ${\displaystyle (\Delta -q)(u{\sqrt {\gamma }})=0}$
for potential ${\displaystyle q={\frac {\Delta {\sqrt {\gamma }}}{\sqrt {\gamma }}}}$