Pointwise Weyl-law improvement for selected surfaces of revolution

Let SS\mathcal{S}\in\mathfrak{S}, and let KεK_\varepsilon be the set of points of S\mathcal{S} at distance at least ε\varepsilon from both poles. Let N(λ,x)N(\lambda,x) denote the pointwise eigenvalue counting function and let cW(x)c_W(x) be the local Weyl coefficient.

Pointwise Weyl-law improvement conjecture. There exists a quantifiable constant κ>0\kappa>0 such that, for every xKεx\in K_\varepsilon,

N(λ,x)=(2π)2cW(x)λ2+OS,ε(λ1κ).N(\lambda,x)=(2\pi)^{-2}c_W(x)\lambda^2+O_{\mathcal{S},\varepsilon}(\lambda^{1-\kappa}).

This predicts a polynomial improvement over the usual pointwise Weyl-law remainder on the specified surfaces, uniformly away from the poles. The authors state it as an expected consequence of their methods; no resolution is supplied.

Sources & referencesView supporting material

Primary source

Ambre Chabert, “Bounds for quasimodes with polynomially narrow bandwidth on surfaces of revolution”, arXiv:2502.00143 (2026).

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