Simple-dynamics conjectures for Newton maps of real polynomial maps
Simple-dynamics conjectures for Newton maps of real polynomial maps
Let be a polynomial map of degree with distinct real roots . Let be its Newton map, its Julia set, its Fatou set, and the basin of attraction of .
Simple-dynamics conjectures. The following properties hold:
- is the countable union of wedge sums of a countable number of circles and of Cantor sets of circles of measure zero.
- has no wandering domains.
- The union of the basins of attraction has full Lebesgue measure.
- Every neighborhood of any point of contains points from at least two distinct basins of attraction.
- Unlike the holomorphic case:
- basins of attraction are not necessarily simply connected;
- immediate basins of attraction are not necessarily unbounded;
- can have interior points without being equal to the whole .
These are proposed as two-dimensional analogues of Barna's theorem and related one-dimensional results for real Newton maps. The supplied parser gives no evidence that these claims have been resolved.
Sources & referencesView supporting material
Primary source
Roberto De Leo, “Julia sets of Newton maps of real quadratic polynomial maps on the plane”, arXiv:1812.11595 (2019).
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