In the sense of W. Thurston here, there is 3 geometries in dimension 2 and there is 8 geometries in dimension 3.
Question: How many different geometries (in the sense of Thurston) do we have in dimension 4 ?
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Sign up to join this communityIn the sense of W. Thurston here, there is 3 geometries in dimension 2 and there is 8 geometries in dimension 3.
Question: How many different geometries (in the sense of Thurston) do we have in dimension 4 ?
The 4-dimensional geometries were classified in the unpublished thesis of Filipkiewicz, which is available here.