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arxiv: 0808.1176 · v1 · submitted 2008-08-08 · 🧮 math.GT

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The maximal number of exceptional Dehn surgeries

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keywords exceptionalmaximalnumberdehnsurgeriescalculationcombinationcomputer-assisted
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We prove two conjectures of C. Gordon. We show that the maximal number of exceptional Dehn surgeries on a 1-cusped hyperbolic 3-manifold is 10, and that the maximal intersection number between exceptional slopes is 8. The proof uses a combination of new geometric techniques and a rigorous computer-assisted calculation.

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