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Room P3.10, Mathematics Building
Roméo Leylekian, GFM - Instituto Superior Técnico
Payne's nodal line conjecture fails on doubly-connected planar domains
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.