Re: [isabelle] using identity for simplification with different type
On 15.07.2015 18:38, noam neer wrote:
> hi all,
> in the following theory lemma tl1 proves an identity which lemma tl2 tries
> to use.
> however the proof of tl2 fails (tl1's proof works fine.)
> I think the problem is that in tl1 the identity is between reals,
> while in tl2 it is between nats.
> am I correct, and is there a convenient way to use tl1 despite that?
Yes, you are correct and no, there is no convenient way.
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