Essential maps exist from 𝐵𝑈 to 𝐶𝑜𝑘𝑒𝑟𝐽

Feshbach, Mark

doi:10.1090/S0002-9939-1986-0840642-5

Essential maps exist from $B\textrm {U}$ to $\textrm {Coker} J$
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Proc. Amer. Math. Soc. 97 (1986), 539-545 Request permission

Abstract:

We show that $[{\text {BU,coker}} J] \ne 0$ but that there are no infinite loop maps from BU to coker $J$. The proofs involve the Segal conjecture.

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