Re: [isabelle] calculational reasoning for transitive relations

Tried now and it works, including with all combinations: 
transtitivity of <o versus <=o, of <=o versus <o, of <=o versus =o, etc.

Thank you, that was easy.  :)

This database-driven customization style for Isabelle does marvels, I should 

more familiar with it.  

Best regards, 

----- Original Message ----
From: Brian Huffman <brianh at>
To: Andrei Popescu <uuomul at>
Cc: cl-isabelle-users at; Joachim Breitner 
<mail at>
Sent: Wed, September 22, 2010 8:35:59 PM
Subject: Re: [isabelle] calculational reasoning for transitive relations

On Wed, Sep 22, 2010 at 1:20 PM, Andrei Popescu <uuomul at> wrote:
> Joachim Breitner wrote:
>>> Also, it would be nice if the transitivity rules for <o, <=o, =o were
>>> set up to work with Isar’s "also... also... finally".
> Good point.  I actually though about this too, but did not investigate if it 
> possible.

I think all you need to do is declare the transitivity rules with the
[trans] attribute. Have either of you tried this?

- Brian

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