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rgnrmllbrg
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Map from homotopy sphere with lifting property induces surjections on homotopy groups. Is it weak equivalence?
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Map from homotopy sphere with lifting property induces surjections on homotopy groups. Is it weak equivalence?
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Map from homotopy sphere with lifting property induces surjections on homotopy groups. Is it weak equivalence?
added 26 characters in body; edited title
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Map from homotopy sphere with lifting property induces surjections on homotopy groups. Is it weak equivalence?
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If $E$ maps onto a contractible space with contractible fibers, must $E$ be contractible?
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