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Zbl 0653.53022
Osgood, B.; Phillips, R.; Sarnak, P.
Extremals of determinants of Laplacians. (English)
[J] J. Funct. Anal. 80, No.1, 148-211 (1988). ISSN 0022-1236

Let M be a compact Riemann surface with smooth boundary dM. Let $\Delta$ be the Laplacian with Dirichlet boundary condition. If $\{\lambda\sb n\}$ are the non-zero eigenvalues of $\Delta$, then the zeta function $\zeta (s,\Delta)=\sum\sb n\lambda\sb n\sp{-s}$ is holomorphic at $s=0$ and - $\zeta$ '(0,$\Delta)$ is the functional determinant. This is a non-local spectral invariant. A metric g on M is said to be uniform if (i) $dM=\emptyset$ and the metric g has constant curvature or (ii) dM$\ne \emptyset$ and g is flat. The authors show that the uniform metric minimizes ths inducing normal variation. Then structures are preserved by invariant, isometric infinitesimal variations.
[Y.Muto]

MSC 2000:: *53C20 Riemannian manifolds (global)
58J50 Spectral problems; spectral geometry; scattering theory

Keywords: Riemann surface; Laplacian; uniform metric; infinitesimal variations

Citations: Zbl 0653.53021

Cited in: Zbl 0963.58012 Zbl 0931.53035 Zbl 0679.42001 Zbl 0653.53021

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