[isabelle-dev] NEWS: Lexically unsigned numerals for HOL

[Florian Haftmann]

> The situation involving ZF can go either way, as there are hardly any users.
> 
> How are negative integers written in ZF now? Can one still write #-3 or is it $- #3?

The first one.  Numerals in ZF are left as they are, *signed*.

	Florian

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