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Department of Applied Mathematics and Theoretical Physics

Buff and Cheritat proved the existence of quadratic polynomials with positive area Julia sets with irrationally indifferent fixed points. Their proof involves three types of renormalization theory; McMullen’s, Yoccoz’s and near-parabolic renormalization. We try to propose a toy model which only use the near-parabolic renormalization, which possibly produce an arithmetic condition for positive area.

Further information

Time:

21Jul
Jul 21st 2026
10:15 to 11:15

Speaker:

Mitsuhiro Shishikura (Kyoto University)

Series:

Isaac Newton Institute Seminar Series