2026/04/23

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2026-04-23 19:43:04 +0000merijn(~merijn@host-cl.cgnat-g.v4.dfn.nl) merijn
2026-04-23 19:40:27 +0000 <Comstar> no magmas?
2026-04-23 19:38:19 +0000 <monochrom> One hour later I realized "oh so you're going to define N as the free monoid on the singleton set".
2026-04-23 19:37:38 +0000 <monochrom> A math prof was teaching an intro number theory course. I heard from students that he began with monoids. I asked him why, he said "because I don't like the Peano axioms".
2026-04-23 19:37:37 +0000 <haskellbridge> <ijouw> generalizing peano numbers: instance (Monoid a) => Num [a]
2026-04-23 19:37:34 +0000layline_(~layline@149.154.26.56) (Textual IRC Client: www.textualapp.com)
2026-04-23 19:36:35 +0000 <monochrom> which brings me to...
2026-04-23 19:36:10 +0000 <monochrom> More precisely, for each type T, [T]'s foldr is catamorphisms for [T]. Now let T=() for Peano naturals. :)
2026-04-23 19:35:42 +0000 <Comstar> folds/foldable and stuff