Room P3.10, Mathematics Building Instituto Superior Técnicohttps://tecnico.ulisboa.pt

Roméo Leylekian
Roméo Leylekian, GFM - Instituto Superior Técnico

I will construct an example of a bounded planar domain with one single hole for which the nodal line of a second Dirichlet eigenfunction is closed and does not touch the boundary. This shows that Payne's nodal line conjecture can at most hold for simply-connected domains in the plane.