>>790
>君達は、なんで きちんと文献を読み込んで議論しないんだ？
>文献の読み込みができないんでしょ？ 数学文献イップスだろ？ オチコボレさんたちｗ　（＾＾

ホイヨ
よめ！ｗ　；ｐ）

https://en.wikipedia.org/wiki/Bousfield_class
Bousfield class
In algebraic topology, the Bousfield class of, say, a spectrum X is the set of all (say) spectra Y whose smash product with X is zero:
X⊗Y=0. Two objects are Bousfield equivalent if their Bousfield classes are the same.
The notion applies to module spectra and in that case one usually qualifies a ring spectrum over which the smash product is taken.
See also
Bousfield localization

https://en.wikipedia.org/wiki/Spectrum_(topology)
Spectrum (topology)

https://en.wikipedia.org/wiki/Smash_product
Smash product

https://ja.wikipedia.org/wiki/%E3%82%B9%E3%83%9E%E3%83%83%E3%82%B7%E3%83%A5%E7%A9%8D
スマッシュ積