# Spahn codensity monad

References

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

## References

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

Last revised on October 19, 2018 at 08:32:33. See the history of this page for a list of all contributions to it.