Timeline for Reference request: Algebras over monoid objects in a monoidal category [duplicate]
Current License: CC BY-SA 4.0
11 events
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Dec 3 at 20:48 | history | closed |
Peter LeFanu Lumsdaine Daniele Tampieri gmvh CommunityBot |
Duplicate of The change-of-monoid adjunction between categories of modules induced by a morphism of monoids | |
Dec 3 at 20:45 | vote | accept | ari rosenfield | ||
Dec 3 at 10:21 | history | became hot network question | |||
Dec 3 at 9:24 | comment | added | Vladimir Dotsenko | It is certainly mentioned matter-of-factly as completely well known in "Coequalizers in categories of algebras" of Linton (link.springer.com/chapter/10.1007/BFb0083082). One may argue that this is already in "Functorial semantics of algebraic theories" of Lawvere (pnas.org/doi/abs/10.1073/pnas.50.5.869), though of course there it is mentioned (as obvious) for equational algebraic theories only. | |
S Dec 3 at 9:02 | history | suggested | J. W. Tanner |
added ref tag
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Dec 3 at 8:29 | answer | added | varkor | timeline score: 6 | |
Dec 3 at 8:13 | review | Close votes | |||
Dec 3 at 20:57 | |||||
Dec 3 at 7:57 | comment | added | Peter LeFanu Lumsdaine | This was asked last year under different terminology: The change-of-monoid adjunction between categories of modules induced by a morphism of monoids. (Though if you just want the monad case, that’s a bit more specific and might be out there somewhere else.) | |
Dec 3 at 4:45 | comment | added | Qiaochu Yuan | That phrasing is a little ambiguous; it seems clearer to say that pullback along $\phi$ defines a functor from $T$-algebras to $S$-algebras, etc. Even in familiar examples there may be more than one candidate for $\phi$, e.g. there are two homomorphisms from the monoid monad to the ring monad, corresponding to addition and multiplication. | |
Dec 3 at 4:39 | review | Suggested edits | |||
S Dec 3 at 9:02 | |||||
Dec 3 at 1:46 | history | asked | ari rosenfield | CC BY-SA 4.0 |