#### The Neumann problem on a torus

###### Ponente(s): Zeinab Ashtab Ashtab

###### Harmonic functions defined in a torus in three-space may be
represented in a series of special functions known as toroidal
harmonics. Using this representation we describe how to solve the
Neumann problem, which is to find a harmonic function with
a prescribed normal derivative on the boundary of the torus.