The Main Conjecture on rational points near curved manifolds

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Let M⊆Rn\mathscr{M}\subseteq\mathbb{R}^n be a compact manifold of dimension mm and co-dimension c=n−mc=n-m. Let NM(δ,Q)\mathrm{N}_{\mathscr{M}}(\delta,Q) denote the relevant counting function for rational points within distance δ\delta of M\mathscr{M} and of height at most QQ. If M\mathscr{M} satisfies proper curvature conditions, then there exists a constant cM>0c_{\mathscr{M}}>0 such that

NM(δ,Q)∼cMδcQm+1(Q→∞)\mathrm{N}_{\mathscr{M}}(\delta,Q)\sim c_{\mathscr{M}}\delta^{c}Q^{m+1}\qquad(Q\rightarrow\infty)

for every fixed ϵ>0\epsilon>0, uniformly in the range

δ∈(Qϵ−1c,1/2).\delta\in(Q^{\epsilon-\frac{1}{c}},1/2).

Main Conjecture. The stated asymptotic holds under the proper curvature conditions above. This is presented as a basic open-ended conjecture motivated by the expected random distribution of rational points near manifolds; the precise curvature conditions remain to be determined.

References

Primary source

Rajula Srivastava and Niclas Technau, “Density of Rational Points Near Flat/Rough Hypersurfaces”, arXiv:2305.01047 (2024).

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