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RIGID ANALYTIC PICARD THEOREMS.

Authors :
Cherry, William
Ru, Min
Source :
American Journal of Mathematics. Aug2004, Vol. 126 Issue 4, p873-889. 17p.
Publication Year :
2004

Abstract

We prove a geometric logarithmic derivative lemma for rigid analytic mappings to algebraic varieties in characteristic zero. We use the lemma to give a new and simpler proof (at least in characteristic zero) of Berkovich's little Picard theorem, which says there are no nonconstant rigid analytic maps from the affine line to nonsingular projective curves of positive genus, and of Cherry's result that there are no nonconstant rigid analytic maps from the affine line to Abelian varieties. Furthermore, we use the lemma to prove new theorems of little and big Picard type for dominant mappings, in close analogy with Griffiths and King. For the little Picard type theorem, we prove that if X is a smooth projective variety with a simple normal crossings divisor D such that (X, D) has nonnegative logarithmic Kodaira dimension, then there are no dominant rigid analytic maps f from Am to X \ D. For the big Picard type theorem, we prove that if Y is a nonsingular rigid analytic space, E is an effective simple normal crossings divisor on Y, and if X is a smooth projective variety with a simple normal crossings divisor D such that (X, D) is of log-general type, then any dominant rigid analytic map f: Y \ E → X \ D extends to an analytic map from Y to X. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00029327
Volume :
126
Issue :
4
Database :
Academic Search Index
Journal :
American Journal of Mathematics
Publication Type :
Academic Journal
Accession number :
14190712
Full Text :
https://doi.org/10.1353/ajm.2004.0025