Tilted-unduloid conjecture for the spherical-helicoid deformation

Let H>12H>\frac{1}{2}, let c(0,1]c\in(0,1], and let fcf^c be the spherical helicoid under consideration. Define

h1:=fc(,0),h2α:=fc(,α),h_1:=f^c(\cdot,0),\qquad h_2^\alpha:=f^c(\cdot,\alpha),

for αI\alpha\in I, and let M(h1,h2α)\mathcal{M}(h_1,h_2^\alpha) denote the relevant set of embedded minimal annuli bounded by these curves. Let α0\alpha_0 be the exceptional parameter, and let Σα~\widetilde{\Sigma^\alpha} denote the sister surface in H2×R\mathbb{H}^2\times\mathbb{R}.

Tilted-unduloid conjecture. For every αI{α0}\alpha\in I\setminus\{\alpha_0\}, there exists ΣαM(h1,h2α)\Sigma^\alpha\in\mathcal{M}(h_1,h_2^\alpha) such that Σα~\widetilde{\Sigma^\alpha} extends to a tilted unduloid in H2×R\mathbb{H}^2\times\mathbb{R}.

The conjecture extends the perturbative existence result proved in the paper, which establishes the conclusion only for parameters sufficiently close to the exceptional value. The source gives no resolution for all αI{α0}\alpha\in I\setminus\{\alpha_0\} together.

Sources & referencesView supporting material

Primary source

Miroslav Vržina, “On the existence problem for tilted unduloids in H^2”, arXiv:1702.02761 (2017).

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