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Newton polyhedra and the Bergman kernel
Authors:Joe?Kamimoto  author-information"  >  author-information__contact u-icon-before"  >  mailto:joe@math.kyushu-u.ac.jp"   title="  joe@math.kyushu-u.ac.jp"   itemprop="  email"   data-track="  click"   data-track-action="  Email author"   data-track-label="  "  >Email author
Affiliation:(1) Faculty of Mathematics, Kyushu University, Fukuoka, 812-8581, Japan;(2) Fachbereich Mathematik, Universität-Gesamthochschule Wuppertal, Ganßstraße 20, D-42097 Wuppertal, Germany(From Oct. 2003 to Sept. 2004)
Abstract:The purpose of this paper is to study singularities of the Bergman kernel at the boundary for pseudoconvex domains of finite type from the viewpoint of the theory of singularities. Under some assumptions on a domain OHgr in Copf n+1 , the Bergman kernel B(z) of OHgr takes the form near a boundary point p: $$ B(z)= frac{Phi(w,rho)}{rho^{2+2/d_F} (log(1/rho))^{m_F-1}}, $$ where (w,rgr) is some polar coordinates on a nontangential cone Lambda with apex at p and rgr means the distance from the boundary. Here PHgr admits some asymptotic expansion with respect to the variables rgr1/ m and log(1/rgr) as rgrrarr0 on Lambda. The values of d F >0, m F Zopf+ and mNopf are determined by geometrical properties of the Newton polyhedron of defining functions of domains and the limit of PHgr as rgrrarr0 on Lambda is a positive constant depending only on the Newton principal part of the defining function. Analogous results are obtained in the case of the Szegö kernel. Mathematics Subject Classification (2000):32A25, 32A36, 32T25, 14M25.
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