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math.FA2023
M-Accretivity via Boundary Systems
Sascha Trostorff
We consider skew-symmetric operators on a Hilbert space and study m-accretive restrictions of their negative adjoints. Using the theory of boundary systems, we provide a full chara…
math.FA2023
A Note on Some Non-Local Boundary Conditions and their Use in Connection with Beltrami Fields
Rainer Picard, Sascha Trostorff
We consider two operators between two Hilbert spaces satisfying and and inspect extensions and $B…