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Results tagged with at.algebraic-topology
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user 16750
Homotopy theory, homological algebra, algebraic treatments of manifolds.
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"homotopy sphere" assumption in Poincare Conjecture
For 3-dim Poincare Conjecture, the assumption is 'simply connected'.
I am wondering whether simply connectedness assumption in 3-dim implies the same homotopy groups as the 3-sphere?
or If we switch …
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