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

Florian Haftmann florian.haftmann at informatik.tu-muenchen.de
Thu Sep 25 16:23:54 CEST 2014

> 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*.



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