Ohkawa’s theorem: There is a set of Bousfield classes

Dwyer, William; Palmieri, John

doi:10.1090/S0002-9939-00-05669-0

Ohkawa’s theorem: There is a set of Bousfield classes
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by William G. Dwyer and John H. Palmieri PDF

Proc. Amer. Math. Soc. 129 (2001), 881-886 Request permission

Abstract:

We give a simple proof of Ohkawa’s theorem, that there is a set of Bousfield classes. The proof leads us to consider the partially ordered set of Ohkawa classes, especially as it compares to the partially ordered set of Bousfield classes.

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