Very nice paper. Thanks Umair and Freek for the correction and link.

On Wed, 20 Feb 2019 21:08 Umair Siddique <umair....@gmail.com wrote:

>
> http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.107.1101&rep=rep1&type=pdf
>
> http://www.gilith.com/talks/tphols2001-subtypes.pdf
>
>
> - Umair
>
> On Wed, Feb 20, 2019 at 4:02 PM Freek Wiedijk <fr...@cs.ru.nl> wrote:
>
>> Hi Ramana,
>>
>> >I think this is exactly what is impossible to do in HOL:
>> >it is a logic of total functions.
>>
>> I think that in PVS you _can_ do something like that, right?
>> Using the predicate subtypes.  Even though PVS _also_
>> only has total functions.
>>
>> And I _think_ there was a paper once about how to mimic
>> predicate subtypes in HOL.  Does anyone remember the
>> reference?
>>
>> Freek
>>
>>
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>>
>
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