2024/12/29

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2024-12-29 04:11:00 +0100 <haskellbridge> <thirdofmay18081814goya> i.e. any work that can done by a type, as an indexing type, will be the same as can be done by either "Finite n" or the type of natural numbers
2024-12-29 04:10:30 +0100prasad(~Thunderbi@c-73-75-25-251.hsd1.in.comcast.net) (Ping timeout: 260 seconds)
2024-12-29 04:08:43 +0100 <haskellbridge> <thirdofmay18081814goya> there is no type that can carry more information as an indexing type***
2024-12-29 04:08:25 +0100 <haskellbridge> <thirdofmay18081814goya> there is no type that can carry more information that either "Finite n" or "Nat", so I think it is a good starting point
2024-12-29 04:07:49 +0100 <haskellbridge> <thirdofmay18081814goya> well
2024-12-29 04:07:23 +0100 <haskellbridge> <thirdofmay18081814goya> thinking about specifically the case where the indexes are given by "Finite n"
2024-12-29 04:07:18 +0100merijn(~merijn@128-137-045-062.dynamic.caiway.nl) (Ping timeout: 265 seconds)
2024-12-29 04:05:34 +0100op_4(~tslil@user/op-4/x-9116473) op_4
2024-12-29 04:05:03 +0100op_4(~tslil@user/op-4/x-9116473) (Remote host closed the connection)
2024-12-29 04:02:45 +0100merijn(~merijn@128-137-045-062.dynamic.caiway.nl) merijn
2024-12-29 04:00:27 +0100notzmv(~umar@user/notzmv) notzmv
2024-12-29 04:00:07 +0100 <haskellbridge> <thirdofmay18081814goya> we want there to be a strict ordering in the indexing type/sort right?
2024-12-29 03:59:50 +0100 <haskellbridge> <thirdofmay18081814goya> hm
2024-12-29 03:52:52 +0100merijn(~merijn@128-137-045-062.dynamic.caiway.nl) (Ping timeout: 252 seconds)
2024-12-29 03:45:04 +0100notzmv(~umar@user/notzmv) (Ping timeout: 265 seconds)
2024-12-29 03:44:53 +0100merijn(~merijn@128-137-045-062.dynamic.caiway.nl) merijn
2024-12-29 03:32:16 +0100merijn(~merijn@128-137-045-062.dynamic.caiway.nl) (Ping timeout: 252 seconds)
2024-12-29 03:27:53 +0100 <Leary> This is clearer when looking at a corresponding indexed applicative: `unit :: f i i (); fuse :: f i j a -> f j k b -> f i k (a, b)`
2024-12-29 03:27:51 +0100merijn(~merijn@128-137-045-062.dynamic.caiway.nl) merijn
2024-12-29 03:24:00 +0100 <Leary> thirdofmay: The Atkey indexed monad has two indices for the same reason `Category` arrows do; its bind performs a kind of composition. Simple examples include the indexed writer monad, which writes category arrows rather than monoids, and the indexed state monad which has distinct types for the initial and final state.
2024-12-29 03:16:33 +0100merijn(~merijn@128-137-045-062.dynamic.caiway.nl) (Ping timeout: 246 seconds)
2024-12-29 03:12:10 +0100merijn(~merijn@128-137-045-062.dynamic.caiway.nl) merijn
2024-12-29 03:11:41 +0100 <lambdabot> Consider it noted.
2024-12-29 03:11:40 +0100 <Leary> @tell prsteele https://play.haskell.org/saved/J7bdQ5zn
2024-12-29 03:06:24 +0100peterbecich(~Thunderbi@syn-047-229-123-186.res.spectrum.com) (Ping timeout: 265 seconds)
2024-12-29 03:04:56 +0100thatonelutenist(8216c46202@2a03:6000:1812:100::fb3) thatonelutenist
2024-12-29 03:03:11 +0100euleritian(~euleritia@dynamic-176-006-135-074.176.6.pool.telefonica.de)
2024-12-29 03:00:21 +0100merijn(~merijn@128-137-045-062.dynamic.caiway.nl) (Ping timeout: 276 seconds)
2024-12-29 02:55:47 +0100comonad(~comonad@p200300d027182d00bcfd40be9d94d2dc.dip0.t-ipconnect.de)
2024-12-29 02:54:07 +0100Square(~Square@user/square) (Ping timeout: 264 seconds)
2024-12-29 02:54:03 +0100comonad(~comonad@p200300d0270bcb00d2bd35ff80c069c9.dip0.t-ipconnect.de) (Ping timeout: 244 seconds)
2024-12-29 02:53:02 +0100merijn(~merijn@128-137-045-062.dynamic.caiway.nl) merijn
2024-12-29 02:52:22 +0100euleritian(~euleritia@dynamic-176-006-135-074.176.6.pool.telefonica.de) (Ping timeout: 252 seconds)
2024-12-29 02:47:33 +0100machinedgod(~machinedg@d108-173-18-100.abhsia.telus.net) (Ping timeout: 248 seconds)
2024-12-29 02:44:58 +0100peterbecich(~Thunderbi@syn-047-229-123-186.res.spectrum.com) peterbecich
2024-12-29 02:39:49 +0100merijn(~merijn@128-137-045-062.dynamic.caiway.nl) (Ping timeout: 265 seconds)
2024-12-29 02:37:53 +0100acidjnk_new3(~acidjnk@p200300d6e7283f42bc4ebb891d7561a4.dip0.t-ipconnect.de) (Ping timeout: 248 seconds)
2024-12-29 02:36:55 +0100 <hololeap> ok I think I see what you mean
2024-12-29 02:35:06 +0100merijn(~merijn@128-137-045-062.dynamic.caiway.nl) merijn
2024-12-29 02:32:11 +0100 <ncf> i.e. applicative functors are monoids in the category of endofunctors *with Day convolution as the monoidal product*
2024-12-29 02:31:34 +0100 <ncf> well that doesn't tell you which monoidal structure you put on it
2024-12-29 02:31:29 +0100 <hololeap> (I barely understand this stuff so don't take me too seriously)
2024-12-29 02:30:10 +0100 <hololeap> isn't that usually just referred to as "the category of endofunctors"
2024-12-29 02:28:29 +0100 <ncf> i.e. the endomorphism monoidal category on Set in the bicategory of categories
2024-12-29 02:27:24 +0100 <ncf> composition of endofunctors
2024-12-29 02:27:14 +0100 <ncf> with composition as the monoidal product
2024-12-29 02:26:37 +0100 <hololeap> "with composition" seems like it would be redundant. isn't that implied by it being a category?
2024-12-29 02:25:55 +0100Smiles(uid551636@id-551636.lymington.irccloud.com) Smiles
2024-12-29 02:23:42 +0100 <ncf> (the one that monads are just monoids in)
2024-12-29 02:23:31 +0100 <ncf> i guess the one-sentence definition of an indexed monad is "category enriched in the monoidal category of endofunctors with composition"