The alpha-limit conjecture for generic real polynomial maps

Let f:R2R2f:\mathbb{R}^2\to\mathbb{R}^2 be a generic polynomial map of degree n3n\geq3. A point of the Julia set JFJ_F of a rational map F:R2R2F:\mathbb{R}^2\to\mathbb{R}^2 is regular if some neighborhood UU has JFUJ_F\cap U as a connected 11-dimensional submanifold and contains points from two different basins. For a point xx, let αNf(x)\alpha_{N_f}(x) denote its alpha-limit set, and let NfN_f be the Newton map of ff.

Alpha-limit conjecture. There is some non-empty open subset Af(RP2)A\subset f(\mathbb{R}\mathrm{P}^2) such that αNf(x)\alpha_{N_f}(x) is equal to the set of non-regular points of the boundary of JNfJ_{N_f} for all xAx\in A.

This is one of the proposed two-dimensional analogues of Barna's simple-dynamics results for real Newton maps. The parser supplies no evidence that the conjecture has 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).

Additional references

2 papers in this index state this conjecture (2018). The statement above is taken from the most recent of them; the others are arXiv:1812.00270.

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