A note on triangulated monads and categories of module spectra

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  • Sanders

    Submitted manuscript, 125 KB, PDF document

  • Ivo Dell'Ambrogio
  • Beren Sanders
Consider a monad on an idempotent complete triangulated category with the property that its Eilenberg–Moore category of modules inherits a triangulation. We show that any other triangulated adjunction realizing this monad is ‘essentially monadic’, i.e. becomes monadic after performing the two evident necessary operations of taking the Verdier quotient by the kernel of the right adjoint and idempotent completion. In this sense, the monad itself is ‘intrinsically monadic’. It follows that for any highly structured ring spectrum, its category of homotopy (aka naïve) modules is triangulated if and only if it is equivalent to its category of highly structured (aka strict) modules.
Original languageEnglish
JournalComptes Rendus Mathématique
Volume356
Issue number8
Pages (from-to)839-842
Number of pages5
ISSN1631-073X
DOIs
Publication statusPublished - 2018

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