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Commit 2021-07-29 15:02 a4f16538

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feat(ring_theory): Dedekind domains have invertible fractional ideals (#8396) This PR proves the other side of the equivalence is_dedekind_domain → is_dedekind_domain_inv, and uses this to provide a comm_group_with_zero (fractional_ideal A⁰ K) instance. Co-Authored-By: Ashvni ashvni.n@gmail.com Co-Authored-By: Filippo A. E. Nuccio filippo.nuccio@univ-st-etienne.fr

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