Topological Structures in Two‐Parameter‐Dependent 2D Vector Fields
Topological Structures in Two‐Parameter‐Dependent 2D Vector Fields
复制标题
二参数相关二维向量场中的拓扑结构
DOI:
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发表时间:
2006
期刊:
影响因子:
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通讯作者:
H. Seidel
中科院分区:
文献类型:
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作者:
T. Weinkauf;H. Theisel;H. Hege;H. Seidel
In this paper we extract and visualize the topological skeleton of two‐parameter‐dependent vector fields. This kind of vector data depends on two parameter dimensions, for instance physical time and a scale parameter. We show that two important classes of local bifurcations – fold and Hopf bifurcations – build line structures for which we present an approach to extract them. Furthermore we show that new kinds of structurally stable local bifurcations exist for this data, namely fold‐fold and Hopf‐fold bifurcations. We present a complete classification of them. We apply our topological extraction method to analyze a number of two‐parameter‐dependent vector fields with different physical interpretations of the two additional dimensions.