We prove that any two real-analytic critical circle maps with cubic critical point and the same irrational rotation number of bounded type are $C^{1+\alpha}$ conjugate for some $\alpha>0$.
CITATION STYLE
de Faria, E., & de Melo, W. (1999). Rigidity of critical circle mappings II. Journal of the American Mathematical Society, 13(2), 343–370. https://doi.org/10.1090/s0894-0347-99-00324-0
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