1 citations · 1 across the 2 of their papers we have counts for
2 papers
math.FA2010★ 1 cited
Perturbations of embedded eigenvalues for the planar bilaplacian
Gianne Derks, Sara Maad Sasane, Bjorn Sandstede
Operators on unbounded domains may acquire eigenvalues that are embedded in the essential spectrum. Determining the fate of these embedded eigenvalues under small perturbations of…
math.FA2010
Persistence of embedded eigenvalues
Shmuel Agmon, Ira Herbst, Sara Maad Sasane
We consider conditions under which an embedded eigenvalue of a self-adjoint operator remains embedded under small perturbations. In the case of a simple eigenvalue embedded in cont…