Wilkie's conjecture on rational points in the exponential real field

Let XRnX\subseteq\mathbb{R}^n be definable in the o-minimal structure Rexp\mathbb{R}_{\exp}, and let XalgX^{\mathrm{alg}} be the union of all semi-algebraic curves contained in XX. Define

Xtrans=XXalg.X^{\mathrm{trans}}=X\setminus X^{\mathrm{alg}}.

For q=a/bQq=a/b\in\mathbb{Q} with gcd(a,b)=1\gcd(a,b)=1, let H(q)=max(a,b)H(q)=\max(|a|,|b|), extend HH to tuples by taking the maximum of the coordinate heights, and set

X(Q,H)={xXQnH(x)H}.X(\mathbb{Q},H)=\{x\in X\cap\mathbb{Q}^n\mid H(x)\leq H\}.

Wilkie's conjecture. There exist constants c=c(X)c=c(X) and d=d(X)d=d(X) such that, for every HNH\in\mathbb{N} with H>eH>e,

Xtrans(Q,H)clog(H)d.\left|X^{\mathrm{trans}}(\mathbb{Q},H)\right|\leq c\log(H)^d.

This conjecture predicts a polylogarithmic refinement of the Pila--Wilkie counting bound for sets definable in Rexp\mathbb{R}_{\exp}, replacing the general bound cHϵcH^\epsilon. It is presented as conjectural in the source, and no resolution is supplied here.

Sources & referencesView supporting material

Primary source

Siegfried Van Hille, “Mild parametrizations of power-subanalytic sets”, arXiv:2105.04918 (2021).

Additional references

2 papers in this index state this conjecture (2019–2021). The statement above is taken from the most recent of them; the others are arXiv:1901.00562.

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