From: Galchin Vasili <vngalchin@yahoo.com>
To: categories@mta.ca
Subject: Category of Heyting Algebras
Date: Tue, 11 Feb 2003 13:48:17 -0800 (PST) [thread overview]
Message-ID: <20030211214817.55877.qmail@web12203.mail.yahoo.com> (raw)
Hello,
I have some questions about the category whose objects are Heyting
algebras and whose arrows are Heyting algebra homomorphims.
1) Does this category possess a subobject classifier?
2) Is this category a CCC?
3) Is this category a topos?
It would really be neat if 3) was true because of all kinds of
self-reference or infinite regression, e.g. it's Omega would be an
internal Heyting algebra, but my guess is "no" to all three.
Regards, Bill Halchin
next reply other threads:[~2003-02-11 21:48 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-02-11 21:48 Galchin Vasili [this message]
2003-02-12 17:03 ` Prof. Peter Johnstone
2003-02-14 3:32 ` Robin Cockett
2003-02-12 17:20 ` Robert McGrail
2003-02-12 19:31 ` Toby Bartels
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