Six-pattern conjecture for lens surgeries on the Poincare homology sphere

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Let Σ(2,3,5)\Sigma(2,3,5) be the Poincare homology sphere, let K⊂Σ(2,3,5)K\subset\Sigma(2,3,5) be a knot, and suppose

L(p,q)=Σ(2,3,5)p(K).L(p,q)=\Sigma(2,3,5)_p(K).

For h∈H(p,K)h\in\mathcal{H}(p,K), where H(p,K)\mathcal{H}(p,K) is the set defined in the source, six-pattern conjecture. Either one of the following six patterns holds:

  1. L(p,q)=L(54ℓ2+15ℓ+1,27ℓ2+21ℓ+3)L(p,q)=L(54\ell^2+15\ell+1,27\ell^2+21\ell+3) for ℓ∈Z∖{0}\ell\in\mathbb{Z}\setminus\{0\};
  2. L(p,q)=L(54ℓ2+39ℓ+7,27ℓ2+33ℓ+9)L(p,q)=L(54\ell^2+39\ell+7,27\ell^2+33\ell+9) for ℓ∈Z∖{0}\ell\in\mathbb{Z}\setminus\{0\};
  3. L(p,q)=L(69ℓ2+17ℓ+1,46ℓ2+19ℓ+2)L(p,q)=L(69\ell^2+17\ell+1,46\ell^2+19\ell+2) for ℓ∈Z∖{0}\ell\in\mathbb{Z}\setminus\{0\};
  4. L(p,q)=L(69ℓ2+29ℓ+3,46ℓ2+27ℓ+4)L(p,q)=L(69\ell^2+29\ell+3,46\ell^2+27\ell+4) for ℓ∈Z∖{0}\ell\in\mathbb{Z}\setminus\{0\};
  5. 3.21≤h2/p≤3.613.21\leq h^2/p\leq 3.61;
  6. 1.15≤h2/p≤1.281.15\leq h^2/p\leq 1.28.

This is a rough conjecture based on the plotted data for lens surgeries on the Poincare homology sphere. The source does not establish the conjecture or provide a resolution status.

References

Primary source

Motoo Tange, “Lens spaces given from L-space homology 3-spheres”, arXiv:0709.0141 (2007).

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