English

Cartan's Conjecture for Moving Hypersurfaces

Complex Variables 2018-07-06 v3

Abstract

Let ff be a holomorphic curve in Pn(C)\mathbb{P}^n({\mathbb{C}}) and let D={D1,,Dq}\mathcal{D}=\{D_1,\ldots,D_q\} be a family of moving hypersurfaces defined by a set of homogeneous polynomials Q={Q1,,Qq}\mathcal{Q}=\{Q_1,\ldots,Q_q\}. For j=1,,qj=1,\ldots,q, denote by Qj=i0++in=djaj,I(z)x0i0xninQ_j=\sum\limits_{i_0+\cdots+i_n=d_j}a_{j,I}(z)x_0^{i_0}\cdots x_n^{i_n}, where I=(i0,,in)Z0n+1I=(i_0,\ldots,i_n)\in\mathbb{Z}_{\ge 0}^{n+1} and aj,I(z)a_{j,I}(z) are entire functions on C{\mathbb{C}} without common zeros. Let KQ\mathcal{K}_{\mathcal{Q}} be the smallest subfield of meromorphic function field M\mathcal{M} which contains C{\mathbb{C}} and all aj,I(z)aj,I(z)\frac{a_{j,I'}(z)}{a_{j,I''}(z)} with aj,I(z)≢0a_{j,I''}(z)\not\equiv 0, 1jq1\le j\le q. In previous known second main theorems for ff and D\mathcal{D}, ff is usually assumed to be algebraically nondegenerate over KQ\mathcal{K}_{\mathcal{Q}}. In this paper, we prove a second main theorem in which ff is only assumed to be nonconstant. This result can be regarded as a generalization of Cartan's conjecture for moving hypersurfaces.

Keywords

Cite

@article{arxiv.1706.05896,
  title  = {Cartan's Conjecture for Moving Hypersurfaces},
  author = {Qiming Yan and Guangsheng Yu},
  journal= {arXiv preprint arXiv:1706.05896},
  year   = {2018}
}

Comments

We add a section of preliminaries on algebraic geometry over general fields, updated the information of the references, and we also add a Lemma 3.4 which was proved by Dethloff-Tran for the sake of completeness

R2 v1 2026-06-22T20:22:34.874Z