Fri, 21 Dec 2018 15:30:24 +0100 More naming of lemmas, cleanup of Abacus and NatBijection
Sebastiaan Joosten <sebastiaan.joosten@uibk.ac.at> [Fri, 21 Dec 2018 15:30:24 +0100] rev 291
More naming of lemmas, cleanup of Abacus and NatBijection
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