The finiteness conjecture for large Fatou components of polynomials
The finiteness conjecture for large Fatou components of polynomials
Let be a polynomial, and let a Fatou component mean a connected component of the Fatou set of . For , measure diameters in the usual Euclidean metric on . Finiteness conjecture. For every , there are at most finitely many Fatou components of with diameters greater than . This conjecture proposes that Fatou components of a polynomial become uniformly small apart from finitely many exceptions at every positive scale; the surrounding discussion highlights difficulties caused by irrationally neutral cycles and Cremer points, and no resolution is supplied here.
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Sources & referencesView supporting material
Primary source
Jinsong Zeng, “Most Fatou and Julia components are small for polynomials”, arXiv:2507.08471 (2025).
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