Discussion of Homotopy Type Theory and Univalent Foundations
 help / color / mirror / Atom feed
From: andrej.bauer@andrej.com
To: Homotopy Type Theory <HomotopyTypeTheory@googlegroups.com>
Subject: Re: [HoTT] Question about the formal rules of cohesive homotopy type theory
Date: Tue, 15 Nov 2022 23:38:54 +0100	[thread overview]
Message-ID: <D66F4584-A005-4F69-8E75-E976E0FF9957@andrej.com> (raw)
In-Reply-To: <96f15467-49c9-43cc-8868-40b1bdf2162dn@googlegroups.com>

>  Does this also include the structural rules of type theory such as the substitution and weakening rules?

I would just like to point out that substutition and weakening typically are not part of the rules. They are shown to be admissible. In this spirit, the question should have been: what is the precise version of substitution and weakening (which is a special case of substitution) that is admissible in cohesive type theory?

With kind regards,

Andrej

-- 
You received this message because you are subscribed to the Google Groups "Homotopy Type Theory" group.
To unsubscribe from this group and stop receiving emails from it, send an email to HomotopyTypeTheory+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/HomotopyTypeTheory/D66F4584-A005-4F69-8E75-E976E0FF9957%40andrej.com.

  parent reply	other threads:[~2022-11-15 22:39 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-11-11 22:53 Madeleine Birchfield
2022-11-11 23:47 ` Michael Shulman
2022-11-15 22:38 ` andrej.bauer [this message]
2022-11-16  9:52   ` 'Thorsten Altenkirch' via Homotopy Type Theory
2022-11-17 13:36     ` Jon Sterling
2022-11-18  2:35       ` Michael Shulman
2022-11-18  6:19         ` Tom Hirschowitz
2022-11-18 10:58         ` Jon Sterling
2022-11-18 16:16           ` Michael Shulman
2022-11-18 16:22             ` Jon Sterling
2022-11-18 11:35         ` 'Thorsten Altenkirch' via Homotopy Type Theory
2022-11-18 12:47         ` Jon Sterling
2022-11-18 13:05           ` Jon Sterling
2022-11-18 16:25             ` Michael Shulman
2022-11-18 16:38               ` Jon Sterling
2022-11-18 16:56                 ` Michael Shulman
2022-11-18 16:59                   ` Jon Sterling
2022-11-18 17:14                     ` Michael Shulman
2022-12-01 14:40                       ` Andreas Nuyts
2022-12-01 15:54                         ` Jon Sterling
2022-12-01 15:57                           ` Andreas Nuyts
2022-12-01 16:09                             ` Andreas Nuyts
2022-12-01 18:00                         ` Michael Shulman
2022-11-18 14:21     ` andrej.bauer

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=D66F4584-A005-4F69-8E75-E976E0FF9957@andrej.com \
    --to=andrej.bauer@andrej.com \
    --cc=HomotopyTypeTheory@googlegroups.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).