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# Questions

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### Knot security (When to trust your life with a knot)

sep 19 at 8:04 Arnab 20317

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### Best known Margulis constants?

apr 12 12 at 3:38 Ian Agol 24.3k13486

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0
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### Group presentations with few relations and undecidable word problem

sep 17 at 6:07 bb 1,20159

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### Can bilipschitz models of hyperbolic 3-manifolds be made effective?

oct 29 at 4:39 unknown (google) 2858

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### Hyperbolic structures on $S\times\mathbb{R}$

jun 5 12 at 18:16 Lee Mosher 6,1091926

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### Unknotting tunnels in surface bundles

dec 1 10 at 6:22 MathOverflow 123

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### Are compact submanifolds of “S X (0,1)” with one boundary component handlebodies, where S is a closed surface?

mar 6 10 at 19:11 Charlie Frohman 2,395515

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### Do you know how to construct a compact hyperbolic 3-manifold with three or four totally geodesic boundary components?

may 20 10 at 13:21 Roberto Frigerio 1,849614

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### Is a simple loop in a spine of a strongly irreducible Heegaard splitting primitive in the fundamental group?

jun 13 10 at 15:33 Ian Agol 24.3k13486

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