Proves Powell's conjecture that the Goeritz group for genus g≥3 Heegaard splittings of S³ is generated by four elements, using the topological minimality of the Heegaard surface.
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A proof of Powell's conjecture on the Goeritz group of $S^3$
Proves Powell's conjecture that the Goeritz group for genus g≥3 Heegaard splittings of S³ is generated by four elements, using the topological minimality of the Heegaard surface.