1 citations · 3 across the 3 of their papers we have counts for
4 papers
On non-selfadjoint perturbations of infinite band Schrödinger operators and Kato method
L. Golinskii, S. Kupin
Let $ H_0=-\dd+V_0 $ be a multidimensional Schrödinger ope\-rator with a real-valued potential and infinite band spectrum, and be its non-selfadjoint perturbation defined…
Lower estimates near the origin for functional calculus on operator semigroups
I. Chalendar, J. Esterle, J. R. Partington
This paper provides sharp lower estimates near the origin for the functional calculus of a generator of an operator semigroup defined on the (strictly) positive real l…
Dichotomy results for norm estimates in operator semigroups
I. Chalendar, J. Esterle, J. R. Partington
This is a survey paper concerned with strongly continuous semigroups in a Banach algebra (often itself simply the algebra of bounded linear operators on a Banach space). These are…
Bounded cosine functions close to continuous scalar bounded cosine functions
Jean Esterle
Let be a cosine function in a unital Banach algebra. We show that if $sup\_{t\in R}\Vert C(t)-cos(t)\Vert \textless{} 2$ for some continuous scalar bounded cosi…