[Merged by Bors] - feat: Order on the localization #3567
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Match leanprover-community/mathlib#18724 and leanprover-community/mathlib#18846 [`group_theory.monoid_localization`@`1f0096e6caa61e9c849ec2adbd227e960e9dff58`..`13b8e258f14bffb5def542aa78b803b0b80541aa`](https://leanprover-community.github.io/mathlib-port-status/file/group_theory/monoid_localization?range=1f0096e6caa61e9c849ec2adbd227e960e9dff58..13b8e258f14bffb5def542aa78b803b0b80541aa)
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| @[to_additive] | ||
| theorem mk_left_injective (b : s) : Injective fun a => mk a b := fun c d h => by | ||
| have : Nonempty s := ⟨b⟩ -- porting note: Needed to add this `have` |
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Do you know why? Did we misport a lemma and add this hypothesis unecessarily?
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No, I cannot find the lemma that uses it. It might be a matter of instance unification, again.
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I think we're missing the fact that submonoids are inhabited (with 1) Nope, that's not it: lean3 can't find that either.
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In Lean3 this finds has_one.nonempty
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No fix in sight, then?
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I think TC search just times out before it finds it
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bors merge Thanks! |
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Match leanprover-community/mathlib#18724 and leanprover-community/mathlib#18846 Co-authored-by: Eric Wieser <wieser.eric@gmail.com>
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Match leanprover-community/mathlib#18724 and leanprover-community/mathlib#18846 Co-authored-by: Eric Wieser <wieser.eric@gmail.com>
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Match leanprover-community/mathlib#18724 and leanprover-community/mathlib#18846 Co-authored-by: Eric Wieser <wieser.eric@gmail.com>
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Match leanprover-community/mathlib#18724 and leanprover-community/mathlib#18846 Co-authored-by: Eric Wieser <wieser.eric@gmail.com>
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Match leanprover-community/mathlib#18724 and leanprover-community/mathlib#18846
group_theory.monoid_localization@1f0096e6caa61e9c849ec2adbd227e960e9dff58..13b8e258f14bffb5def542aa78b803b0b80541aa