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Sam Nead
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This three-manifold can also be constructed by taking a genus two surface $S$, crossing with the interval $I$ to get $S \times I$, and attaching a pair of one-handles both of which connect $S \times \{0\}$ to $S \times \{1\}$. Applying the Klein combination theorem gives infinitely many complete hyperbolic metrics on the result.

Sam Nead
  • 28.2k
  • 5
  • 72
  • 133