arXivDaily arXiv每日学术速递 周一至周五更新
arXiv math/0003105math.DS
收藏

$({\mathbb C},0)$的解析芽和非解析芽的线性化

Linearization of analytic and non--analytic germs of diffeomorphisms of $({\mathbb C},0)$

T. Carletti, S. Marmi

摘要:

研究了单变量单同态芽线性化的Siegel中心问题。除了形式线性化和解析线性化的经典问题外,我们还给出了线性化属于某些在复合和导子下闭的超可微芽代数的充分条件,包括Gevrey类.在解析情形下,我们对J. C. Yoccoz关于经典优数级数法所得估计的最优性。在超可微的情况下,我们证明了Brjuno条件是足够的线性化属于同一类的芽。如果一个允许的线性化是不太经常比芽发现新的算术条件,弱于Brjuno条件。我们简要地讨论了我们的结果的最优性。

英文摘要:

We study Siegel's center problem on the linearization of germs of diffeomorphisms in one variable. In addition of the classical problems of formal and analytic linearization, we give sufficient conditions for the linearization to belong to some algebras of ultradifferentiable germs closed under composition and derivation, including Gevrey classes. In the analytic case we give a positive answer to a question of J.-C. Yoccoz on the optimality of the estimates obtained by the classical majorant series method. In the ultradifferentiable case we prove that the Brjuno condition is sufficient for the linearization to belong to the same class of the germ. If one allows the linearization to be less regular than the germ one finds new arithmetical conditions, weaker than the Brjuno condition. We briefly discuss the optimality of our results.

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。

↑