Complex Curves as Lines of Geometries

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• 作者：Olga Belova ; Josef Mikeš ; Karl Strambach
• 关键词：Complex curves ; Semiholomorphic Hjelmslev plane ; Grünwald spaces ; Shells of curves
• 刊名：Results in Mathematics
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：71
• 期：1-2
• 页码：145-165
• 全文大小：
• 刊物类别：Mathematics and Statistics
• 刊物主题：Mathematics, general;
• 出版者：Springer International Publishing
• ISSN：1420-9012
• 卷排序：71

文摘

We investigate Hjelmslev geometries \({\mathcal{H}}\) having a representation in a complex affine space \({\mathbb{C}^n}\) the lines of which are given by entire functions. If \({\mathcal{H}}\) has dimension 2 and the entire functions satisfy some injectivity conditions, then \({\mathcal{H}}\) is a substructure of the complex Laguerre plane. If the lines are geodesics with respect to a natural connection \({\nabla^{\circ}}\), then a detailed classification of them as well as of the corresponding geometries is obtained. Generalizations of complex Grünwald planes play a main role in the classification. Since in the considered geometries the set of lines is invariant under the translation group of \({\mathbb{C}^n}\), we classify all complex curves C in \({\mathbb{C}^n}\) given by entire functions as well as the connections \({\nabla^\circ}\) such that all images of C under the translation group of \({\mathbb C^n}\) consist of geodesics with respect to \({\nabla^{\circ}}\).