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From: peasthope@shaw.ca
To: categories@mta.ca
Subject: Re: abstraction of notation from sets.
Date: Wed, 24 Feb 2010 08:30:47 -0800	[thread overview]
Message-ID: <E1NkdWi-0004nC-CW@mailserv.mta.ca> (raw)

Mikael,

> ... $a \in C_0$, with the rationale that a category is
> a graph (consisting of vertices C_0 and edges C_1), ...

So
"$a \in C_0$" = "a is an object in C"
and
"$f \in C_1$" = "f is a map in C"
would be acceptable to some readers?

Thanks,         ... Peter E.





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             reply	other threads:[~2010-02-24 16:30 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-02-24 16:30 peasthope [this message]
2010-02-25 19:23 ` Toby Bartels
  -- strict thread matches above, loose matches on Subject: below --
2010-02-24  0:43 peasthope
2010-02-24 14:39 ` Johannes Huebschmann
2010-02-24 15:59 ` Mikael Vejdemo-Johansson
2010-02-24 16:46 ` Aleks Kissinger
2010-02-25  7:17 ` Partha Pratim Ghosh
2010-02-25 18:26   ` Michael Shulman
2010-02-26 18:53     ` Richard Garner
2010-02-27 23:20       ` Paul Levy
2010-02-28 21:30 ` Vaughan Pratt

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