Asymptotic empirical-current conjecture for Fekete currents

From papers

Let ERnE\subset\mathbb{R}^n be a compact, non-pluripolar set, and let F(r)=F1,r,,FN(r),r\\{\mathcal F^{(r)}\\}=\\{\mathcal F^{1,r},\dots,\mathcal F^{N(r),r}\\} be an asymptotic sequence of currents with Fs,rAk(E)\mathcal F^{s,r}\in\mathscr{A}^k(E) for s=1,,N(r)s=1,\dots,N(r). Define its empirical current by

T(r):=1N(r)s=1N(r)Fs,r.T^{(r)}:=\frac{1}{N(r)}\sum_{s=1}^{N(r)}\mathcal F^{s,r}.

Asymptotic empirical-current conjecture. The total variation measures T(r)\lVert T^{(r)}\rVert converge to μE\mu_E in the weak^* topology of measures supported on EE. Moreover, if TS0k(E)T\in\mathscr{S}_0^k(E) is an accumulation point of T(r)\\{T^{(r)}\\} in D0,k(E)\mathscr{D}_{0,k}(E), then there is an orthonormal basis τ1,,τn\\{\tau_1,\dots,\tau_n\\} of Rn\mathbb{R}^n such that

T(ω)=1(nk)α=kω(x);τα1ταk,dμE.T(\omega)=\frac{1}{\binom{n}{k}}\sum_{|\alpha|=k}'\int \langle\omega(x);\tau_{\alpha_1}\wedge\dots\wedge\tau_{\alpha_k}\rangle\\,\mathrm{d}\mu_E.

The conjecture seeks the analogue for asymptotically Fekete currents of the known equidistribution of true and approximate Fekete points. The paper explains that existing results for Fekete currents require a restrictive form of the currents and therefore do not establish this stronger asymptotic statement; its resolution remains open.

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Sources & referencesView supporting material

Primary source

Ludovico Bruni Bruno and Federico Piazzon, “Sampling, approximation, and interpolation of differential forms by admissible integral k-meshes”, arXiv:2504.05266 (2025).

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