Consier the fibration $\Omega K(\mathbb Q / \mathbb Z, n)\rightarrow K(\mathbb Z , n) \stackrel{f}{\rightarrow} K( \mathbb Q, n)$
The context is that this fibration is a crucial step in the proof of the rational hurewicz theorem in this paper:
< http://old.mfo.de/organisation/institute/klaus/HOMEPAGE/Publications/Publications/P13/preprint13.pdf>
(the last proof on page 7).
1) what is $f$
2) is this a special case of a fibration $\Omega K(G / N, n)\rightarrow K(N , n) \stackrel{f}{\rightarrow} K( G, n)$ where $G$ is an abelian group and $N$ is a subgroup of $G$.
3) how does this relate to the path fibration $\Omega K(\mathbb Z, n)\simeq K(\mathbb Z, n-1)\rightarrow PK(\mathbb Z , n) \stackrel{f}{\rightarrow} K( \mathbb Z, n)$