Spahn
codensity monad (Rev #2, changes)

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It is not necessary for a functor to have an adjoint to canonically associate a monad to it. The codensity monad of a functor FF (if it exists) is the right Kan extension of FF along itself.

References

  • Tom Leinster,
    • where do monads come from?, post to the nacfé, n-Café,web
    • codensity and the ultrafilter monad, arXiv:1209.3606

Revision on October 19, 2018 at 08:32:33 by Todd Trimble?. See the history of this page for a list of all contributions to it.