English

Analytic subvarieties with many rational points

Algebraic Geometry 2008-11-20 v1 Number Theory

Abstract

We give a generalization of the classical Bombieri--Schneider--Lang criterion in transcendence theory. We give a local notion of LGLG--germ, which is similar to the notion of EE-- function and Gevrey condition, and which generalize (and replace) the condition on derivatives in the theorem quoted above. Let KCK\subset \Bbb C be a number field and XX a quasi--projective variety defined over KK. Let γ ⁣:MX\gamma\colon M\to X be an holomorphic map of finite order from a parabolic Riemann surface to XX such that the Zariski closure of the image of it is strictly bigger then one. Suppose that for every pX(K)γ(M)p\in X(K)\cap\gamma(M) the formal germ of MM near PP is an LGLG-- germ, then we prove that X(K)γ(M)X(K)\cap\gamma(M) is a finite set. Then we define the notion of conformally parabolic Kh\"aler varieties; this generalize the notion of parabolic Riemann surface. We show that on these varieties we can define a value distribution theory. The complementary of a divisor on a compact Kh\"aler manifold is conformally parabolic; in particular every quasi projective variety is. Suppose that AA is conformally parabolic variety of dimension mm over C\Bbb C with Kh\"aler form ω\omega and γ ⁣:AX\gamma\colon A\to X is an holomorphic map of finite order such that the Zariski closure of the image is strictly bigger then mm. Suppose that for every pX(K)γ(A)p\in X(K)\cap \gamma (A), the image of AA is an LGLG--germ. then we prove that there exists a current TT on AA of bidegree (1,1)(1,1) such that ATωm1\int_AT\wedge\omega^{m-1} explicitly bounded and with Lelong number bigger or equal then one on each point in γ1(X(K))\gamma^{-1}(X(K)). In particular if AA is affine γ1(X(K))\gamma^{-1}(X(K)) is not Zariski dense.

Keywords

Cite

@article{arxiv.0811.3195,
  title  = {Analytic subvarieties with many rational points},
  author = {Carlo Gasbarri},
  journal= {arXiv preprint arXiv:0811.3195},
  year   = {2008}
}

Comments

44 pages. Submitted

R2 v1 2026-06-21T11:43:25.412Z