[Merged by Bors] - chore: Reduce scope of LinearOrderedCommGroupWithZero

Archive/Imo/Imo1988Q6.lean

@@ -3,7 +3,6 @@ Copyright (c) 2019 Johan Commelin. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Johan Commelin
 -/
-import Mathlib.Algebra.Order.WithZero
 import Mathlib.Data.Nat.Prime
 import Mathlib.Data.Rat.Defs
 import Mathlib.Order.WellFounded
@@ -220,7 +219,7 @@ theorem imo1988_q6 {a b : ℕ} (h : a * b + 1 ∣ a ^ 2 + b ^ 2) :
   · -- Show that the claim is true if a = b.
     intro x hx
     suffices k ≤ 1 by
-      rw [Nat.le_add_one_iff, le_zero_iff] at this
+      rw [Nat.le_add_one_iff, Nat.le_zero] at this
       rcases this with (rfl | rfl)
       · use 0; simp
       · use 1; simp
@@ -298,7 +297,7 @@ example {a b : ℕ} (h : a * b ∣ a ^ 2 + b ^ 2 + 1) : 3 * a * b = a ^ 2 + b ^
           assumption_mod_cast
   · -- Show the base case.
     intro x y h h_base
-    obtain rfl | rfl : x = 0 ∨ x = 1 := by rwa [Nat.le_add_one_iff, le_zero_iff] at h_base
+    obtain rfl | rfl : x = 0 ∨ x = 1 := by rwa [Nat.le_add_one_iff, Nat.le_zero] at h_base
     · simp at h
     · rw [mul_one, one_mul, add_right_comm] at h
       have y_dvd : y ∣ y * k := dvd_mul_right y k

Archive/Imo/Imo2013Q5.lean

@@ -163,7 +163,7 @@ theorem fixed_point_of_gt_1 {f : ℚ → ℝ} {x : ℚ} (hx : 1 < x)
       (x : ℝ) + (a ^ N - x : ℚ) ≤ f x + (a ^ N - x : ℚ) := by gcongr; exact H5 x hx
       _ ≤ f x + f (a ^ N - x) := by gcongr; exact H5 _ h_big_enough
   have hxp : 0 < x := by positivity
-  have hNp : 0 < N := by by_contra! H; rw [le_zero_iff.mp H] at hN; linarith
+  have hNp : 0 < N := by by_contra! H; rw [Nat.le_zero.mp H] at hN; linarith
   have h2 :=
     calc
       f x + f (a ^ N - x) ≤ f (x + (a ^ N - x)) := H2 x (a ^ N - x) hxp (by positivity)

Counterexamples/LinearOrderWithPosMulPosEqZero.lean

@@ -5,7 +5,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Johan Commelin, Damiano Testa, Kevin Buzzard
 -/
 import Mathlib.Algebra.Order.Monoid.Defs
-import Mathlib.Algebra.Order.Monoid.WithZero.Defs
+import Mathlib.Algebra.Order.Monoid.WithZero
 
 #align_import linear_order_with_pos_mul_pos_eq_zero from "leanprover-community/mathlib"@"328375597f2c0dd00522d9c2e5a33b6a6128feeb"
 

Counterexamples/ZeroDivisorsInAddMonoidAlgebras.lean

@@ -92,7 +92,7 @@ theorem zero_divisors_of_torsion {R A} [Nontrivial R] [Ring R] [AddMonoid A] (a
     · intro b hb b0
       rw [single_pow, one_pow, single_eq_of_ne]
       exact nsmul_ne_zero_of_lt_addOrderOf' b0 (Finset.mem_range.mp hb)
-    · simp only [(zero_lt_two.trans_le o2).ne', Finset.mem_range, not_lt, le_zero_iff,
+    · simp only [(zero_lt_two.trans_le o2).ne', Finset.mem_range, not_lt, Nat.le_zero,
         false_imp_iff]
     · rw [single_pow, one_pow, zero_smul, single_eq_same]
   · apply_fun fun x : R[A] => x 0

Mathlib.lean

@@ -434,8 +434,7 @@ import Mathlib.Algebra.Order.Monoid.ToMulBot
 import Mathlib.Algebra.Order.Monoid.TypeTags
 import Mathlib.Algebra.Order.Monoid.Units
 import Mathlib.Algebra.Order.Monoid.WithTop
-import Mathlib.Algebra.Order.Monoid.WithZero.Basic
-import Mathlib.Algebra.Order.Monoid.WithZero.Defs
+import Mathlib.Algebra.Order.Monoid.WithZero
 import Mathlib.Algebra.Order.Monovary
 import Mathlib.Algebra.Order.Nonneg.Field
 import Mathlib.Algebra.Order.Nonneg.Floor
@@ -464,7 +463,6 @@ import Mathlib.Algebra.Order.Sub.WithTop
 import Mathlib.Algebra.Order.Support
 import Mathlib.Algebra.Order.ToIntervalMod
 import Mathlib.Algebra.Order.UpperLower
-import Mathlib.Algebra.Order.WithZero
 import Mathlib.Algebra.Order.ZeroLEOne
 import Mathlib.Algebra.PEmptyInstances
 import Mathlib.Algebra.PUnitInstances

Mathlib/Algebra/Group/WithOne/Defs.lean

@@ -29,6 +29,10 @@ In Lean 3, we use `id` here and there to get correct types of proofs. This is re
 `WithOne` and `WithZero` are marked as `Irreducible` at the end of
 `Mathlib.Algebra.Group.WithOne.Defs`, so proofs that use `Option α` instead of `WithOne α` no
 longer typecheck. In Lean 4, both types are plain `def`s, so we don't need these `id`s.
+
+## TODO
+
+`WithOne.coe_mul` and `WithZero.coe_mul` have inconsistent use of implicit parameters
 -/
 
 

Mathlib/Algebra/Lie/Nilpotent.lean

@@ -134,7 +134,7 @@ variable (R L M)
 theorem antitone_lowerCentralSeries : Antitone <| lowerCentralSeries R L M := by
   intro l k
   induction' k with k ih generalizing l <;> intro h
-  · exact (le_zero_iff.mp h).symm ▸ le_rfl
+  · exact (Nat.le_zero.mp h).symm ▸ le_rfl
   · rcases Nat.of_le_succ h with (hk | hk)
     · rw [lowerCentralSeries_succ]
       exact (LieSubmodule.mono_lie_right _ _ ⊤ (ih hk)).trans (LieSubmodule.lie_le_right _ _)

Mathlib/Algebra/Lie/Solvable.lean

@@ -89,7 +89,7 @@ theorem derivedSeriesOfIdeal_add (k l : ℕ) : D (k + l) I = D k (D l I) := by
 theorem derivedSeriesOfIdeal_le {I J : LieIdeal R L} {k l : ℕ} (h₁ : I ≤ J) (h₂ : l ≤ k) :
     D k I ≤ D l J := by
   revert l; induction' k with k ih <;> intro l h₂
-  · rw [Nat.zero_eq, le_zero_iff] at h₂; rw [h₂, derivedSeriesOfIdeal_zero]; exact h₁
+  · rw [Nat.zero_eq, Nat.le_zero] at h₂; rw [h₂, derivedSeriesOfIdeal_zero]; exact h₁
   · have h : l = k.succ ∨ l ≤ k := by rwa [le_iff_eq_or_lt, Nat.lt_succ_iff] at h₂
     cases' h with h h
     · rw [h, derivedSeriesOfIdeal_succ, derivedSeriesOfIdeal_succ]

Mathlib/Algebra/Order/Field/Canonical/Defs.lean

@@ -5,7 +5,7 @@ Authors: Robert Lewis, Leonardo de Moura, Mario Carneiro, Floris van Doorn
 -/
 import Mathlib.Algebra.Order.Field.Defs
 import Mathlib.Algebra.Order.Ring.Canonical
-import Mathlib.Algebra.Order.WithZero
+import Mathlib.Algebra.Order.Monoid.WithZero
 
 #align_import algebra.order.field.canonical.defs from "leanprover-community/mathlib"@"fc2ed6f838ce7c9b7c7171e58d78eaf7b438fb0e"
 

Mathlib/Algebra/Order/Hom/Monoid.lean

@@ -5,7 +5,7 @@ Authors: Yaël Dillies
 -/
 import Mathlib.Algebra.GroupWithZero.Hom
 import Mathlib.Algebra.Order.Group.Instances
-import Mathlib.Algebra.Order.Monoid.WithZero.Defs
+import Mathlib.Algebra.Order.Monoid.WithZero
 import Mathlib.Order.Hom.Basic
 
 #align_import algebra.order.hom.monoid from "leanprover-community/mathlib"@"3342d1b2178381196f818146ff79bc0e7ccd9e2d"

Mathlib/Algebra/Order/Kleene.lean

@@ -249,9 +249,7 @@ theorem kstar_eq_one : a∗ = 1 ↔ a ≤ 1 :=
     fun h ↦ one_le_kstar.antisymm' <| kstar_le_of_mul_le_left le_rfl <| by rwa [one_mul]⟩
 #align kstar_eq_one kstar_eq_one
 
-@[simp]
-theorem kstar_zero : (0 : α)∗ = 1 :=
-  kstar_eq_one.2 zero_le_one
+@[simp] lemma kstar_zero : (0 : α)∗ = 1 := kstar_eq_one.2 (zero_le _)
 #align kstar_zero kstar_zero
 
 @[simp]

Mathlib/Algebra/Order/Monoid/ToMulBot.lean

@@ -3,7 +3,7 @@ Copyright (c) 2016 Jeremy Avigad. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Jeremy Avigad, Leonardo de Moura, Mario Carneiro, Johannes Hölzl
 -/
-import Mathlib.Algebra.Order.Monoid.WithZero.Defs
+import Mathlib.Algebra.Order.Monoid.WithZero
 import Mathlib.Algebra.Order.Monoid.TypeTags
 import Mathlib.Algebra.Order.Monoid.WithTop
 import Mathlib.Algebra.Group.Equiv.Basic