On 17.05.2014 17:33, Florian Haftmann wrote: >> See now 376604d56b5 > http://isabelle.in.tum.de/reports/Isabelle/rev/376604d56b54 > > The changeset is misleading since it describes »- 1« as special case of > a numeral, which it is not (any longer) – it is just the canonical > representation of minus one. I considered it as special as "1" (as we don't have any rules to transform -1 to 1 in this context). What would you have preferred instead? Or is this about "-1" instead of "- 1"?
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