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Article

Rigidity of critical circle maps

Pablo GuarinoIMPA, Rio de Janeiro, BrazilMarco MartensInstituto de Matemática e Estatística, Universidade Federal FluminenseWelington de MeloIMPA, Rio de Janeiro, Brazil
2018en
ABI

Abstract

We prove that any two C4 critical circle maps with the same irrational rotation number and the same odd criticality are conjugate to each other by a C1 circle diffeomorphism. The conjugacy is C1+α for a full Lebesgue measure set of rotation numbers.

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Cited by 30 references