The Resolvent of Closed Extensions of Cone Differential Operators

Details The Resolvent of Closed Extensions of Cone Differential Operators The Resolvent of Closed Extensions of Cone Differential Operators

2002-09-27

arxiv.org/abs/math/0209381v1

Mathematics

Analysis of PDEs

29 pages

Scientific paper

We study closed extensions A of an elliptic differential operator on a manifold with conical singularities, acting as an unbounded operator on a weighted L_p-space. Under suitable conditions we show that the resolvent (\lambda-A)^{-1} exists in a sector of the complex plane and decays like 1/|\lambda| as |\lambda| tends to infinity. Moreover, we determine the structure of the resolvent with enough precision to guarantee existence and boundedness of imaginary powers of A. As an application we treat the Laplace-Beltrami operator for a metric with straight conical degeneracy and describe domains yielding maximal regularity for the Cauchy problem \dot{u}-\Delta u=f, u(0)=0.

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