Boundary localization conjecture for sweepouts in domains with corners

Let ΩRn\Omega\subset\mathbb{R}^n be a connected domain with piecewise smooth boundary having θ\theta-corners, where θ(0,π)\theta\in(0,\pi). Fix η>0\eta>0. For all pp0(Ω)p\geq p_0(\Omega), r(0,r0(Ω))r\in(0,r_0(\Omega)), and δ>0\delta>0, let F:XpZk(Ω,Ω;Z2)F:X^p\rightarrow\mathcal{Z}_k(\Omega,\partial\Omega;\mathbb{Z}_2) be a continuous map with no concentration of mass. Boundary localization conjecture. There should exist F:XIk(cl(Ωr);Z2)F':X\rightarrow I_k(\operatorname{cl}(\Omega_r);\mathbb{Z}_2) such that

  1. F(x)\partial F'(x) is a continuous δ\delta-localized family in Zk1(Ωr;Z2)\mathcal{Z}_{k-1}(\partial\Omega_r;\mathbb{Z}_2);
  2. F(F(x)Ωr,F(x))<η\mathcal{F}(F(x)\llcorner\Omega_r,F'(x))<\eta;
  3. M(F(x))M(F(x))+M(F(x))rp1n1+C(Ω)M(Ω)kn1pnk1n1\operatorname{\textbf{M}}(F'(x))\leq\operatorname{\textbf{M}}(F(x))+\frac{\operatorname{\textbf{M}}(F(x))}{r}p^{-\frac{1}{n-1}}+C(\Omega)\operatorname{\textbf{M}}(\partial\Omega)^{\frac{k}{n-1}}p^{\frac{n-k-1}{n-1}};
  4. M(F(x))c(Ω)(M(F(x))r+pnkn1)\operatorname{\textbf{M}}(\partial F'(x))\leq c(\Omega)\left(\frac{\operatorname{\textbf{M}}(F(x))}{r}+p^{\frac{n-k}{n-1}}\right).

Moreover, if FF is a pp-sweepout of Ω\Omega, then F\partial F' is a pp-sweepout of Ωr\partial\Omega_r by (k1)(k-1)-cycles. This is the technical conjecture used in the Weyl-law proof; it permits a small interior perturbation and imposes no concentration of mass.

Sources & referencesView supporting material

Primary source

Larry Guth and Yevgeny Liokumovich, “Parametric inequalities and Weyl law for the volume spectrum”, arXiv:2202.11805 (2025).

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