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arXiv math/0305392math.DS
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二维不动点子空间中的分歧

Bifurcation in two-dimensional fixed point subspaces

P. C. Matthews

摘要:

研究了具有二维不动点子空间和非零二次项的稳定子群的对称分支。一般来说,有一个或三个分支的解决方案,和五个定性不同的相图,提供了两个非简并条件得到满足。条件也推导出确定的五个可能的相图发生,给定的二次项的系数。结果被应用到具有球对称性的分支问题,其中有六个不可约表示,其中具有立方对称性的解的子空间是二维的。在每种情况下,解决方案的数量和他们的稳定性。

英文摘要:

Bifurcation with symmetry is considered in the case of an isotropy subgroup with a two-dimensional fixed point subspace and non-zero quadratic terms. In general, there are one or three branches of solutions, and five qualitatively different phase portraits, provided that two non-degeneracy conditions are satisfied. Conditions are also derived to determine which of the five possible phase portraits occurs, given the coefficients of the quadratic terms. The results are applied to the problem of bifurcation with spherical symmetry, where there are six irreducible representations for which the subspace of solutions with cubic symmetry is two-dimensional. In each case, the number of solutions and their stability is found.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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