From: jim stasheff <jds@math.upenn.edu>
To: Dusko Pavlovic <Dusko.Pavlovic@comlab.ox.ac.uk>,
categories <categories@mta.ca>
Subject: Re: String diagrams, adjunction and autonomous categories.
Date: Sat, 04 Sep 2010 12:44:37 -0400 [thread overview]
Message-ID: <E1Os2y0-0006f1-Eq@mlist.mta.ca> (raw)
In-Reply-To: <E1Ort80-000892-Te@mlist.mta.ca>
On 9/3/10 9:38 PM, Dusko Pavlovic
> speaking of coherence in closed categories, i was always under the
> impression that kelly and maclane, while writing their 1971 JPAA paper,
> and the later one (1979?) secretly drew string diagrams on the side, and
> then translated them into categorical diagrams. at least for
> counterexamples, this works. and in the kelly-laplaza paper about
> compact/autonomous categories: the free construction is expressed in
> terms
> of strings, but i guess at the time it was easier to describe them in
> words, than to wait for the publisher to typeset your stings for you.
In the earlier 60s, it wasn't conceivable to include even tree diagrams
in anything to be published
hence my inidicial approach to the formulas for A_\infty structures
jim
[For admin and other information see: http://www.mta.ca/~cat-dist/ ]
next prev parent reply other threads:[~2010-09-04 16:44 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-31 5:06 John Baez
2010-09-02 18:23 ` Michael Shulman
2010-09-04 1:38 ` Dusko Pavlovic
2010-09-04 16:44 ` jim stasheff [this message]
-- strict thread matches above, loose matches on Subject: below --
2010-09-06 16:20 André Joyal
2010-09-03 7:07 John Baez
2010-09-06 2:05 ` Peter Selinger
2010-08-29 5:48 David Leduc
2010-08-30 2:31 ` Micah Blake McCurdy
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