Isn't for general spaces in addition to the rational equivalence of homotopy groups there a requirement to satisfy some condition on the Postnikov invariants as well ?
Ah, that could be. What I wrote applies to simply connected spaces (and I forgot to qualify this at the entry, but have now done so).
By the way, at simply connected space it used to say that a simply connected space has to be connected, too. I removed that clause, as I don't think it matches common usage of the term "simply connected".
]]>Isn't for general spaces in addition to the rational equivalence of homotopy groups there a requirement to satisfy some condition on the Postnikov invariants as well ? I have not looked into the subject for a while but this is what my old memory says.
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