Published online by Cambridge University Press: 20 November 2018
James gave an integral homotopy decomposition of $\sum \Omega \sum X$, Hilton-Milnor one for
$\Omega (\sum X\,\vee \,\sum Y)$, and Cohen-Wu gave
$p$-local decompositions of
$\Omega \sum X$ if
$X$ is a suspension. All are natural. Using idempotents and telescopes we show that the James and Hilton-Milnor decompositions have analogues when the suspensions are replaced by coassociative
$\text{co-}H$ spaces, and the Cohen-Wu decomposition has an analogue when the (double) suspension is replaced by a coassociative, cocommutative
$\text{co-}H$ space.