Cubic tangencies and hyperbolic diffeomorphisms
Cubic tangencies and hyperbolic diffeomorphisms
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三次切线和双曲微分同胚
DOI:
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发表时间:
1998
期刊:
影响因子:
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通讯作者:
F. Vuillemin
中科院分区:
文献类型:
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作者:
C. Bonatti;L. Díaz;F. Vuillemin
We show that the loss of hyperbolicity of an Anosov diffeomorphism of the torusT2 can be produced by a cubic tangency at a heteroclinic point. Such a first bifurcation is generic for 3-parameters families of diffeomorphisms. Our construction may also be applied to any basic set Λ of a surface diffeomorphism. Moreover, if the pointq of cubic tangency corresponds to a lateral point of Λ then the bifurcation is generic for two parameters. In this case the pointq may be a homoclinic intersection.