导致奇异吸引子的圈上的异维相切
Heterodimensional tangencies on cycles leading to strange attractors
摘要:
本文研究了两参数三维单同态族的异维圈,其中某些元素包含两个不同指标的鞍点的稳定流形和非稳定流形的非退化异维切线,并证明了这类单同态可以用另一个与其中一个鞍点有二次同宿切线的元素很好地逼近.此外,它示出的切线展开一般关于家庭。这个结果与Viana中的一些定理相结合,我们发现了在异维循环中任意靠近原元的奇异吸引子。
英文摘要:
In this paper, we study heterodimensional cycles of two-parameter families of 3-dimensional diffeomorphisms some element of which contains nondegenerate heterodimensional tangencies of the stable and unstable manifolds of two saddle points with different indexes, and prove that such diffeomorphisms can be well approximated by another element which has a quadratic homoclinic tangency associated to one of these saddle points. Moreover, it is shown that the tangency unfolds generically with respect to the family. This result together with some theorem in Viana, we detect strange attractors appeared arbitrarily close to the original element with the heterodimensional cycle.
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