[isabelle-dev] Syntax for lattice operations?

Florian Haftmann florian.haftmann at informatik.tu-muenchen.de
Thu Mar 10 11:13:29 CET 2016


> What would be the objective of this change?

Mainly to get rid of those brittle (no_)notation declarations scattered
over various theories.  Organizing syntax through library theories does
not quite work out.

	Florian

> 
>> On 10 Mar 2016, at 10:00, Florian Haftmann <florian.haftmann at informatik.tu-muenchen.de> wrote:
>>
>> Hi all,
>> 		
>> traditionally, syntax for lattice operations (⊓ ⊔ ⊥ ⊤ etc.) has been
>> kept in a separate library theory, to allow use of that quite generic
>> notation for unforeseen applications.
>>
>> Meanwhile however all those operations to which that syntax is attached
>> to are members of syntactic type classes.  It could be worth to attempt
>> to make that syntax standard, using funny subscripts or similar for the
>> more exotic cases.
>>
>> Cheers,
>> 	Florian
>>
>> -- 
> 
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