[isabelle-dev] Numbers in Types

Amine Chaieb chaieb at in.tum.de
Wed Apr 2 10:51:50 CEST 2008

Thanks Florian for the Word Library Hint. Library/Numeral_Type by Brian 
is what I need.

I was wondering why it depends on InfiniteSet (ATP_Linkup is perfectly 
sufficient, I will commit it shortly).


PS: Can't we have metis at earlier stage than ATP_Linkup?. I have 
experienced many lemmas not proved by blast and auto but within seconds 
by metis.

Amine Chaieb wrote:
> Dear all,
> I would like Isabelle/HOL to parse types named by numerals (only natural 
> numbers). The type `4` should represent a type inhabited by exactely 4 
> elements. Generally The type n, for n a numeral positive integer 
> representation, the type `n` should represent a type with exactly $n$ 
> elements, where $n$ is the number encoded in n.
> Is there any chance to have this?
> Amine.
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