Geometry and Spectra of Closed Extensions of Elliptic Cone Operators
Juan B. Gil, Thomas Krainer, Gerardo A. Mendoza · Canadian Journal of Mathematics · 2007
Abstract We study the geometry of the set of closed extensions of index 0 of an elliptic differential cone operator and its model operator in connection with the spectra of the extensions, and we give a necessary and sufficient condition for the existence of rays of minimal growth for such operators.