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Partially supported by NSF grant DMS89-96210
Partially supported by NSF grant DMS8701318-01
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Eliashberg, Y., Ratiu, T. The diameter of the symplectomorphism group is infinite. Invent Math 103, 327–340 (1991). https://doi.org/10.1007/BF01239516
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DOI: https://doi.org/10.1007/BF01239516