I can confirm that, at least that side is simple.

Tobias’ point about avoiding exponential blowup is important, though. Might 
still be too early to retire recdef entirely if it is substantially better for 
some kinds of definitions, esp if they are in use (I think the recdef in Simpl 
is one of these).

Cheers,
Gerwin

> On 09.06.2015, at 11:27, Thomas Sewell <thomas.sew...@nicta.com.au> wrote:
>
> I've had a quick scan over the NICTA repositories. It doesn't look like
> there are any live original uses of recdef. There are recdefs in a copy
> of Simpl-AFP, and in some backups of historical papers.
>
> Short summary, NICTA doesn't have any stakes in recdef.
>
> Cheers,
>    Thomas.
>
> On 08/06/15 06:13, Makarius wrote:
>> On Sat, 6 Jun 2015, Gerwin Klein wrote:
>>
>>>
>>>> On 06.06.2015, at 21:23, Makarius <makar...@sketis.net> wrote:
>>>>
>>>> (2) 'defer_recdef' which is unused in the directly visible Isabelle
>>>>   universe.  So it could be deleted today.
>>>>
>>>> This mailing list thread is an opportunity to point out dark matter
>>>> in the Isabelle universe, where 'defer_recdef' still occurs.
>>>> Otherwise I will remove it soon, lets say within 1-2 weeks.
>>>
>>> Unused in our part of the dark matter universe as well.
>>
>> The thread has shifted over to actual 'recdef'. Are there remaining
>> uses of 'recdef' in the NICTA dark matter?
>>
>> So far I always thought the remaining uses in HOL-Decision_Procs are
>> only a reminder that there are other important applications.
>>
>>
>>    Makarius


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