Talk:Phase semantics
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== Preliminaries: relations and closures == |
== Preliminaries: relations and closures == |
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| + | ===References=== |
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I think everything I write in the preliminaries can be found in Birkhoff, "Lattice theory". Can anyone check? (I don't think I have easy access to a copy. |
I think everything I write in the preliminaries can be found in Birkhoff, "Lattice theory". Can anyone check? (I don't think I have easy access to a copy. |
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-- [[User:Pierre Hyvernat|Pierre Hyvernat]] 11:22, 8 February 2009 (UTC) |
-- [[User:Pierre Hyvernat|Pierre Hyvernat]] 11:22, 8 February 2009 (UTC) |
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| + | ===Notation=== |
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| + | The refinement calculus people use the relation in the reverse order: what I write <math>\langle R\rangle</math>, they write <math>\langle R^\sim\rangle</math>. (The same is true of <math>[R]</math>.) I find it confusing, and since this is hardly "standard" notation one way or the other, I don't think this is important... |
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| + | -- [[User:Pierre Hyvernat|Pierre Hyvernat]] 11:27, 8 February 2009 (UTC) |
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Revision as of 13:27, 8 February 2009
Preliminaries: relations and closures
References
I think everything I write in the preliminaries can be found in Birkhoff, "Lattice theory". Can anyone check? (I don't think I have easy access to a copy.
In particular, I think xR was written 
, with the relation R being implicit.
If so, we should add a reference to that.
-- Pierre Hyvernat 11:22, 8 February 2009 (UTC)
Notation
The refinement calculus people use the relation in the reverse order: what I write 
, they write 
. (The same is true of [R].) I find it confusing, and since this is hardly "standard" notation one way or the other, I don't think this is important...
-- Pierre Hyvernat 11:27, 8 February 2009 (UTC)
