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| Glavni autor: | |
|---|---|
| Format: | Preprint |
| Izdano: |
2020
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| Teme: | |
| Online pristup: | https://arxiv.org/abs/2011.10613 |
| Oznake: |
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- In 1980 J. Powell \cite{Po} proposed that five specific elements sufficed to generate the Goeritz group for any genus Heegaard splitting of the 3-sphere. Here we prove that a natural expansion of Powell's proposed generators, to include all eyeglass twists and all topological conjugates of Powell's generators does suffice.