In this paper we show that Greiner's results on boundary perturbation can be obtained systematically and partially generalised by applying additive perturbation theorems to appropriate operator matrices.
Submitted July 2, 2004. Published August 6, 2004.
Math Subject Classifications: 47D06, 35K05, 93B28, 93C05.
Key Words: Boundary value problems; boundary perturbation; strongly continuous semigroups; operator matrices.
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| Gregor Nickel |
Auf der Morgenstelle 10
D-72076 Tubingen, Germany
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