categories - Category Theory list
 help / color / mirror / Atom feed
From: tholen@mathstat.yorku.ca
To: categories@mta.ca
Subject: Re: Categories and functors, query
Date: Mon,  8 Sep 2008 20:55:48 -0400	[thread overview]
Message-ID: <E1KcsEy-0000He-Gp@mailserv.mta.ca> (raw)

Quoting Walter Tholen <tholen@mathstat.yorku.ca>:

> definition was arrived at without having to leave the universe. With the
> definition of category (and functor and natural transformation)
> Eilenberg and Moore had to do a lot more than just repeating at the
> monoid level what Brandt did at the group level! In my view their big

OOPS -- "Moore" should read "Mac Lane", of course. (Sorry, Saunders!) W.




             reply	other threads:[~2008-09-09  0:55 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-09-09  0:55 tholen [this message]
  -- strict thread matches above, loose matches on Subject: below --
2008-09-11  9:05 R Brown
2008-09-11  0:20 Toby Bartels
2008-09-09 22:22 jim stasheff
2008-09-09 22:05 jim stasheff
2008-09-09 10:53 Nikita Danilov
2008-09-08 16:00 Walter Tholen
2008-09-08 12:50 Michael Barr
2008-09-08  1:25 Dana Scott
2008-09-07 21:33 R Brown
2008-09-06 10:48 Johannes Huebschmann

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=E1KcsEy-0000He-Gp@mailserv.mta.ca \
    --to=tholen@mathstat.yorku.ca \
    --cc=categories@mta.ca \
    /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).