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Theorem counterexample.units_int.one_ne_neg_one

Modification history

2023-05-30 23:18
counterexamples/direct_sum_is_internal.lean
chore(archive + counterexamples): namespaces imo, theorems_100, counterexample, plus three more (#19129) …
Added counterexample.units_int.one_ne_neg_oneView on Github →