The fractal intersection conjecture

Let XX be an irreducible variety defined over a finitely generated field KK, and let FX(Kˉ)F\subset X(\bar K) be a fractal on XX. For a reduced subscheme ZZ of XX defined over KK, write Z(Kˉ)FZar\overline{Z(\bar K)\cap F}^{\,\mathrm{Zar}} for the Zariski closure of its intersection with FF.

The fractal intersection conjecture. The closure Z(Kˉ)FZar\overline{Z(\bar K)\cap F}^{\,\mathrm{Zar}} is a union of finitely many points and finitely many components BiB_i such that Bi(Kˉ)FB_i(\bar K)\cap F is a fractal in BiB_i for each ii.

This conjecture provides a common framework for the Manin–Mumford and Lang-type finiteness results for fractals. The source describes generalized Lang-type statements and several special cases as evidence, but gives no resolution of the conjecture itself.

Sources & referencesView supporting material

Primary source

Arash Rastegar, “Self-Similar Fractals and Arithmetic Dynamics”, arXiv:math/0404498 (2015).

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