Mathematics – Complex Variables
Scientific paper
2009-10-28
Mathematics
Complex Variables
46 pages
Scientific paper
The purpose of this article is to consider two themes both of which emanate from and involve the Kobayashi and the Carath\'eodory metric. First we study the biholomorphic invariant introduced by B. Fridman on strongly pseudoconvex domains, on weakly pseudoconvex domains of finite type in $\mathbf C^2$ and on convex finite type domains in $\mathbf C^n$ using the scaling method. Applications include an alternate proof of the Wong-Rosay theorem, a characterization of analytic polyhedra with noncompact automorphism group when the orbit accumulates at a singular boundary point and a description of the Kobayashi balls on weakly pseudoconvex domains of finite type in $ \mathbf{C}^2$ and convex finite type domains in $ \mathbf{C}^n $ in terms of Euclidean parameters. Second a version of Vitushkin's theorem about the uniform extendability of a compact subgroup of automorphisms of a real analytic strongly pseudoconvex domain is proved for $C^1$-isometries of the Kobayashi and Carath\'eodory metrics on a smoothly bounded strongly pseudoconvex domain.
Mittal Prachi
Verma Kaushal
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