[isabelle-dev] Numeral simplification: neg and iszero

[Florian Haftmann]

Hi Brian,

> Is there any good reason why the constants "neg" and "iszero" (defined
> in Int.thy) are needed anymore?

if there is a chance to get rid of those, go ahead and try.  Perhaps
they play a role for numerals and natural numbers, but this is just a
suspicion.

Cheers
	Florian

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