661 citations
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Showing 2008 · math.APShow all
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math.AP2008★ 5 cited
Approximation of the Semigroup generated by the Robin Laplacian in terms of the Gaussian Semigroup
Robin Nittka
For smooth bounded open sets in euclidean space, we construct corresponding contractive linear extension operators for the space of continuous functions which preserve regularity o…
math.AP2008★ 1 cited
Lattice Homomorphisms between Sobolev Spaces
Markus Biegert
We show that every vector lattice homomorphism between Sobolev spaces can be represented by a composition and a multiplication, that is, is of the form …