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Commit 2022-07-12 21:43 3543262a

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feat(ring_theory/bezout): Define Bézout rings. (#15091)

Estimated changes

Created src/ring_theory/bezout.lean

added theorem function.surjective.is_bezout

added theorem is_bezout.dvd_gcd

added def is_bezout.gcd

added theorem is_bezout.gcd_dvd_left

added theorem is_bezout.gcd_dvd_right

added theorem is_bezout.gcd_eq_sum

added theorem is_bezout.iff_span_pair_is_principal

added theorem is_bezout.span_gcd

added theorem is_bezout.tfae

added def is_bezout.to_gcd_domain

Modified src/ring_theory/noetherian.lean

added theorem is_noetherian_iff_fg_well_founded

added theorem submodule.fg_induction