Ilman's asymptotic-end conjecture for embedded self-shrinkers

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Let Σ⊂R3\Sigma\subset\mathbb R^3 be a smooth complete embedded self-shrinker with at most quadratic area growth. An end is a connected component of Σ∖BR\Sigma\setminus B_R for sufficiently large RR. For a vector vjv_j, the associated self-shrinking cylinder is

{x:dist⁡(x,span⁡(vj))=2}.\left\{x: \operatorname{dist}(x,\operatorname{span}(v_j))=\sqrt{2}\right\}.

Ilman's asymptotic-end conjecture. There exists R>0R>0 such that Σ∖BR\Sigma\setminus B_R decomposes into a finite number of ends UjU_j, and for each jj either:

  • as λ⟶0+\lambda\longrightarrow 0+, λUj\lambda U_j converges locally smoothly to a cone CjC_j such that Cj∖{O}C_j\setminus\{O\} is smooth; or
  • there is a vector vjv_j such that, as τ⟶+∞\tau\longrightarrow +\infty, Uj−τvjU_j-\tau v_j converges to the cylinder
{x:dist⁡(x,span⁡(vj))=2}.\left\{x:\operatorname{dist}(x,\operatorname{span}(v_j))=\sqrt{2}\right\}.

All known examples and numerical evidence support this proposed classification of ends, but the conjecture remains open.

References

Primary source

Lu Wang, “Uniqueness of Self-similar Shrinkers with Asymptotically Conical Ends”, arXiv:1110.0450 (2011).

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