Jointly scattered derivative conjecture for analytic compositions

Let IRI\subset\mathbb{R} be a compact interval and let kNk\in\mathbb{N}. For each i=1,,ki=1,\dots,k, let (ui,n)nN(u_{i,n})_{n\in\mathbb{N}} be a sequence of functions in C1(I,R)C^1(I,\mathbb{R}) whose derivatives ui,nu_{i,n}' are monotone for every ii and nn. Let f1,,fk:RRf_1,\dots,f_k:\mathbb{R}\to\mathbb{R} be analytic functions, and assume that for every aRa\in\mathbb{R} the sequences u1,n(a),,uk,n(a)u_{1,n}'(a),\dots,u_{k,n}'(a) are jointly scattered. Jointly scattered derivative conjecture. For almost every xRx\in\mathbb{R}, the sequence

(u1,n(f1(x)),,uk,n(fk(x)))nN\big(u_{1,n}(f_1(x)),\dots,u_{k,n}(f_k(x))\big)_{n\in\mathbb{N}}

is uniformly distributed in Tk\mathbb{T}^k. This is the second proposed way to avoid the counterexample in the preceding discussion; the paper gives no resolution.

Sources & referencesView supporting material

Primary source

Vitaly Bergelson and Joel Moreira, “Metric uniform distribution on analytic curves”, arXiv:2509.06909 (2025).

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.