From: Aaron Gray <aaronngray.lists@gmail.com>
To: Andreas Rossberg <rossberg@mpi-sws.org>
Cc: "François Pottier" <francois.pottier@inria.fr>, caml-list@inria.fr
Subject: Re: [Caml-list] coinductive data types
Date: Tue, 30 Aug 2022 18:01:20 +0100 [thread overview]
Message-ID: <CANkmNDesNdg0wjBjK+NMRnbk5Ush5O3O5Dg0Aa1fdLHBiPNCBw@mail.gmail.com> (raw)
In-Reply-To: <2C890C66-F8F7-402C-B88E-587C3E21DE89@mpi-sws.org>
On Tue, 30 Aug 2022 at 17:46, Andreas Rossberg <rossberg@mpi-sws.org> wrote:
>
> Hi François,
>> I’m curious why you would categorise iso-recursive types as nominal. I have always considered them structural as well, since two structurally matching iso-recursive type expressions are still deemed equivalent. That matters in so far as it makes them modular in a way that true nominal types are not.
>
> Iso-recursive types would only behave like nominal in the degenerate case where all type definitions occurring in the entire program (across module boundaries) are tied into a single grand iso-recursive knot, I think.
Are there any founding papers or books on isorecursive and
equirecursive typing ?
Aaron
next prev parent reply other threads:[~2022-08-30 17:01 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-29 15:43 Aaron Gray
2022-08-30 7:24 ` François Pottier
2022-08-30 11:11 ` Xavier Leroy
2022-08-30 12:33 ` Aaron Gray
2022-08-31 1:21 ` Jacques Garrigue
[not found] ` <11E3A59A-BD33-4EC0-9FAD-711A1EACA35E@gmail.com>
2022-08-31 3:22 ` Aaron Gray
2022-09-01 12:13 ` Jacques Garrigue
2022-08-30 12:37 ` Aaron Gray
2022-08-30 13:57 ` Nate Foster
2022-08-30 15:27 ` Aaron Gray
2022-08-30 15:47 ` François Pottier
2022-08-30 16:32 ` Aaron Gray
2022-08-31 8:19 ` François Pottier
2022-08-30 16:45 ` Andreas Rossberg
2022-08-30 17:01 ` Aaron Gray [this message]
2022-08-30 18:20 ` Nate Foster
2022-08-31 8:25 ` François Pottier
2022-08-31 8:46 ` Peter Thiemann
2022-08-31 9:41 ` Andreas Rossberg
2022-08-31 13:49 ` François Pottier
2022-08-31 15:40 ` Peter Thiemann
2022-08-31 16:44 ` Andreas Rossberg
2022-08-31 15:55 ` Basile Clement
2022-08-31 18:42 ` Andreas Rossberg
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