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From: Gaucher Philippe <Philippe.Gaucher@pps.jussieu.fr>
To: categories@mta.ca
Subject: right adjoint by forgetting relational symbols
Date: Wed, 15 Oct 2008 12:03:23 +0200	[thread overview]
Message-ID: <E1Kq4kY-0005L5-Ub@mailserv.mta.ca> (raw)

Dear all,

I need some references for this problem. Suppose we have a locally
presentable category C axiomatized by a limits theory T, so C=Mod(T).
Let us forget some relational symbols in T and all axioms containing these
relational symbols. One obtains a theory T'. There is a forgetful functor
Mod(T) --> Mod(T'). Does this functor have always a right adjoint ? If not,
what conditions must we add ?

Thanks in advance. pg.




             reply	other threads:[~2008-10-15 10:03 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-15 10:03 Gaucher Philippe [this message]
2008-10-16 10:19 Gaucher Philippe
2008-10-16 22:05 Ross Street

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