46 resultados para Perturbation (Mathematics)
em QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast
Resumo:
A unitary operator V and a rank 2 operator R acting on a Hilbert space H are constructed such that V + R is hypercyclic. This answers affirmatively a question of Salas whether a finite rank perturbation of a hyponormal operator can be supercyclic.