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Poicare'sPoincaré's dodecahedral sphere is a counterexample to the original homological version of PoincarePoincaré conjecture.
Poicare's dodecahedral sphere is a counterexample to the original homological version of Poincare conjecture.
Poincaré's dodecahedral sphere is a counterexample to the original homological version of Poincaré conjecture.
