Averaged moment inequality for conformal-centroid compact continua

Let KCK\subset\mathbb{C} be compact and connected, with logarithmic capacity cap(K)=1\operatorname{cap}(K)=1, 0K0\in K, and conformal centroid at the origin. Let gg be the Green's function of KcK^c with pole at infinity, let L=[2,2]L=[-2,2], and let J(r,K)=rRI(t,K)dttJ(r,K)=\int_r^R I(t,K)\,\frac{dt}{t}, where I(r,K)=12πππg(reiθ)dθI(r,K)=\frac{1}{2\pi}\int_{-\pi}^{\pi}g(re^{i\theta})\,d\theta. Averaged moment conjecture. For every R2R\geq2,

J(r,K)J(r,L),r[0,R].J(r,K)\leq J(r,L),\qquad r\in[0,R].

This is proposed as an averaged substitute for the moment inequality that holds under symmetry but fails under the weaker conformal-centroid condition; its status is not resolved in the source.

Sources & referencesView supporting material

Primary source

A. Baernstein, R. S. Laugesen and I. E. Pritsker, “Moment inequalities for equilibrium measures in the plane”, arXiv:math/0702456 (2007).

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