| 书目名称 | Quadratic Differentials | | 编辑 | Kurt Strebel | | 视频video | | | 丛书名称 | Ergebnisse der Mathematik und ihrer Grenzgebiete. 3. Folge / A Series of Modern Surveys in Mathemati | | 图书封面 |  | | 描述 | A quadratic differential on aRiemann surface is locally represented by a ho lomorphic function element wh ich transforms like the square of a derivative under a conformal change of the parameter. More generally, one also allows for meromorphic function elements; however, in many considerations it is con venient to puncture the surface at the poles of the differential. One is then back at the holomorphic case. A quadratic differential defines, in a natural way, a field of line elements on the surface, with singularities at the critical points, i.e. the zeros and poles of the differential. The integral curves of this field are called the trajectories of the differential. A large part of this book is about the trajectory structure of quadratic differentials. There are of course local and global aspects to this structure. Be sides, there is the behaviour of an individual trajectory and the structure deter mined by entire subfamilies of trajectories. An Abelian or first order differential has an integral or primitive function is in general not single-valued. In the case of a quadratic on the surface, which differential, one first has to take the square root and then integrate. The l | | 出版日期 | Book 1984 | | 关键词 | Derivative; Extremale quasikonforme Abbildung; Meromorphic function; Quadratisches Differential; Riemann | | 版次 | 1 | | doi | https://doi.org/10.1007/978-3-662-02414-0 | | isbn_softcover | 978-3-642-05723-6 | | isbn_ebook | 978-3-662-02414-0Series ISSN 0071-1136 Series E-ISSN 2197-5655 | | issn_series | 0071-1136 | | copyright | Springer-Verlag Berlin Heidelberg 1984 |
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发表于 2025-3-21 17:41:53
