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Eric Wofsey
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This happens in spectra. By a theorem of Lin, there are no maps from the Eilenberg-MacLane spectra $H\mathbb{F}_p$ to finite spectra; the proof is an Adams spectral sequence computation using the fact that the Steenrod algebra is self-injective.

Eric Wofsey
  • 31.2k
  • 2
  • 115
  • 151