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A three-manifold is a space that locally looks like Euclidean three-dimensional space

7 votes
1 answer
224 views

Balanced presentation of the fundamental group of a Seifert fiber space

Is there any readily available reference for a balanced presentation of the fundamental group in terms of the classifying invariants of an arbitrary Seifert fibered space? I can't find it, and the usu …
lemon314's user avatar
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7 votes
1 answer
356 views

Virtually large groups of small rank (related to 3-manifolds)

Edited 25.05.21: the assumptions of the question were incorrect, but as the discussion may be helpful for future MOnauts, I'll strike my mistakes and add clearly marked explanations afterwards. I am l …
lemon314's user avatar
  • 323