<p>Let <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11425_2023_2402_Article_IEq1.gif" Format="GIF" Height="21" Rendition="HTML" Resolution="72" Type="Linedraw" Width="60" /> </InlineMediaObject> <EquationSource Format="TEX">\(\{D_{i}\}_{i=1}^{n+1}\)</EquationSource> <EquationSource Format="MATHML"><math display="block"> <mo fence="false" stretchy="false">{</mo> <msub> <mi>D</mi> <mrow> <mi>i</mi> </mrow> </msub> <msubsup> <mo fence="false" stretchy="false">}</mo> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <mrow> <mi>n</mi> <mo>+</mo> <mn>1</mn> </mrow> </msubsup> </math></EquationSource> </InlineEquation> be <i>n</i> + 1 hypersurfaces in ℙ<sup><i>n</i></sup>(ℂ) with total degrees <InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11425_2023_2402_Article_IEq2.gif" Format="GIF" Height="23" Rendition="HTML" Resolution="72" Type="Linedraw" Width="151" /> </InlineMediaObject> <EquationSource Format="TEX">\(\sum\nolimits_{i=1}^{n+1}\deg D_{i}\geqslant n+2\)</EquationSource> <EquationSource Format="MATHML"><math display="block"> <msubsup> <mo movablelimits="false">∑</mo> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <mrow> <mi>n</mi> <mo>+</mo> <mn>1</mn> </mrow> </msubsup> <mi>deg</mi> <msub> <mi>D</mi> <mrow> <mi>i</mi> </mrow> </msub> <mo>⩾</mo> <mi>n</mi> <mo>+</mo> <mn>2</mn> </math></EquationSource> </InlineEquation>, in general position and satisfying a generic geometric condition: every <i>n</i> hypersurfaces intersect only at smooth points, and their intersections are transversal. For every algebraically nondegenerate entire holomorphic curve <i>f</i>: ℂ → ℙ<sup><i>n</i></sup>(ℂ), we establish a Second Main Theorem: <Equation ID="Equ1"> <MediaObject> <ImageObject Color="BlackWhite" FileRef="11425_2023_2402_Article_Equ1.gif" Format="GIF" Height="51" Rendition="HTML" Resolution="72" Type="Linedraw" Width="141" /> </MediaObject> <EquationSource Format="TEX">\(\sum_{i=1}^{n+1}\delta_{f}(D_{i})&lt;n+1,\)</EquationSource> <EquationSource Format="MATHML"><math display="block"> <munderover> <mo>∑</mo> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <mrow> <mi>n</mi> <mo>+</mo> <mn>1</mn> </mrow> </munderover> <msub> <mi>δ</mi> <mrow> <mi>f</mi> </mrow> </msub> <mo stretchy="false">(</mo> <msub> <mi>D</mi> <mrow> <mi>i</mi> </mrow> </msub> <mo stretchy="false">)</mo> <mo>&lt;</mo> <mi>n</mi> <mo>+</mo> <mn>1</mn> <mo>,</mo> </math></EquationSource> </Equation> expressed as a defect inequality in Nevanlinna theory. This result provides the first example in the literature of a Second Main Theorem for <i>n</i> + 1 general hypersurfaces in ℙ<sup><i>n</i></sup>(ℂ) with optimal total degrees.</p>

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Entire holomorphic curves into ℙn(ℂ) intersecting n + 1 general hypersurfaces

  • Zhangchi Chen,
  • Dinh Tuan Huynh,
  • Ruiran Sun,
  • Song-Yan Xie

摘要

Let \(\{D_{i}\}_{i=1}^{n+1}\) { D i } i = 1 n + 1 be n + 1 hypersurfaces in ℙn(ℂ) with total degrees \(\sum\nolimits_{i=1}^{n+1}\deg D_{i}\geqslant n+2\) i = 1 n + 1 deg D i n + 2 , in general position and satisfying a generic geometric condition: every n hypersurfaces intersect only at smooth points, and their intersections are transversal. For every algebraically nondegenerate entire holomorphic curve f: ℂ → ℙn(ℂ), we establish a Second Main Theorem: \(\sum_{i=1}^{n+1}\delta_{f}(D_{i})<n+1,\) i = 1 n + 1 δ f ( D i ) < n + 1 , expressed as a defect inequality in Nevanlinna theory. This result provides the first example in the literature of a Second Main Theorem for n + 1 general hypersurfaces in ℙn(ℂ) with optimal total degrees.