Changes since the initial port

The following section lists changes to this file in mathlib3 and mathlib4 that occured after the initial port. Most recent changes are shown first. Hovering over a commit will show all commits associated with the same mathlib3 commit.

Changes in mathlib3

806c0bb8

(last sync)

Changes in mathlib3port

mathlib3

mathlib3port

5c1efce1

bump to nightly-2024-04-06-08

mathlib commit https://github.com/leanprover-community/mathlib/commit/65a1391a0106c9204fe45bc73a039f056558cb83

e34029c9

Diff

@@ -29,7 +29,7 @@ open TrivSqZeroExt
 
 variable (𝕜 : Type _) {R : Type _}
 
-variable [IsROrC 𝕜] [NormedCommRing R] [NormedAlgebra 𝕜 R]
+variable [RCLike 𝕜] [NormedCommRing R] [NormedAlgebra 𝕜 R]
 
 variable [TopologicalRing R] [CompleteSpace R] [T2Space R]

5c1efce1

bump to nightly-2023-11-29-11

mathlib commit https://github.com/leanprover-community/mathlib/commit/65a1391a0106c9204fe45bc73a039f056558cb83

049e2cad

Diff

@@ -35,14 +35,14 @@ variable [TopologicalRing R] [CompleteSpace R] [T2Space R]
 
 #print DualNumber.exp_eps /-
 @[simp]
-theorem exp_eps : exp 𝕜 (eps : DualNumber R) = 1 + eps :=
+theorem exp_eps : NormedSpace.exp 𝕜 (eps : DualNumber R) = 1 + eps :=
   exp_inr _ _
 #align dual_number.exp_eps DualNumber.exp_eps
 -/
 
 #print DualNumber.exp_smul_eps /-
 @[simp]
-theorem exp_smul_eps (r : R) : exp 𝕜 (r • eps : DualNumber R) = 1 + r • eps := by
+theorem exp_smul_eps (r : R) : NormedSpace.exp 𝕜 (r • eps : DualNumber R) = 1 + r • eps := by
   rw [eps, ← inr_smul, exp_inr]
 #align dual_number.exp_smul_eps DualNumber.exp_smul_eps
 -/

5c1efce1

bump to nightly-2023-09-24-06

mathlib commit https://github.com/leanprover-community/mathlib/commit/ce64cd319bb6b3e82f31c2d38e79080d377be451

5655435f

Diff

@@ -3,8 +3,8 @@ Copyright (c) 2023 Eric Wieser. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Eric Wieser
 -/
-import Mathbin.Algebra.DualNumber
-import Mathbin.Analysis.NormedSpace.TrivSqZeroExt
+import Algebra.DualNumber
+import Analysis.NormedSpace.TrivSqZeroExt
 
 #align_import analysis.normed_space.dual_number from "leanprover-community/mathlib"@"5c1efce12ba86d4901463f61019832f6a4b1a0d0"

5c1efce1

bump to nightly-2023-07-20-09

mathlib commit https://github.com/leanprover-community/mathlib/commit/8ea5598db6caeddde6cb734aa179cc2408dbd345

9c56d0dd

Diff

@@ -2,15 +2,12 @@
 Copyright (c) 2023 Eric Wieser. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Eric Wieser
-
-! This file was ported from Lean 3 source module analysis.normed_space.dual_number
-! leanprover-community/mathlib commit 5c1efce12ba86d4901463f61019832f6a4b1a0d0
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathbin.Algebra.DualNumber
 import Mathbin.Analysis.NormedSpace.TrivSqZeroExt
 
+#align_import analysis.normed_space.dual_number from "leanprover-community/mathlib"@"5c1efce12ba86d4901463f61019832f6a4b1a0d0"
+
 /-!
 # Results on `dual_number R` related to the norm

5c1efce1

bump to nightly-2023-06-13-21

mathlib commit https://github.com/leanprover-community/mathlib/commit/9fb8964792b4237dac6200193a0d533f1b3f7423

829520ac

Diff

@@ -36,15 +36,19 @@ variable [IsROrC 𝕜] [NormedCommRing R] [NormedAlgebra 𝕜 R]
 
 variable [TopologicalRing R] [CompleteSpace R] [T2Space R]
 
+#print DualNumber.exp_eps /-
 @[simp]
 theorem exp_eps : exp 𝕜 (eps : DualNumber R) = 1 + eps :=
   exp_inr _ _
 #align dual_number.exp_eps DualNumber.exp_eps
+-/
 
+#print DualNumber.exp_smul_eps /-
 @[simp]
 theorem exp_smul_eps (r : R) : exp 𝕜 (r • eps : DualNumber R) = 1 + r • eps := by
   rw [eps, ← inr_smul, exp_inr]
 #align dual_number.exp_smul_eps DualNumber.exp_smul_eps
+-/
 
 end DualNumber

5c1efce1

bump to nightly-2023-06-04-18

mathlib commit https://github.com/leanprover-community/mathlib/commit/5f25c089cb34db4db112556f23c50d12da81b297

3fb4268b

Diff

@@ -4,7 +4,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Eric Wieser
 
 ! This file was ported from Lean 3 source module analysis.normed_space.dual_number
-! leanprover-community/mathlib commit 806c0bb86f6128cfa2f702285727518eb5244390
+! leanprover-community/mathlib commit 5c1efce12ba86d4901463f61019832f6a4b1a0d0
 ! Please do not edit these lines, except to modify the commit id
 ! if you have ported upstream changes.
 -/
@@ -14,6 +14,9 @@ import Mathbin.Analysis.NormedSpace.TrivSqZeroExt
 /-!
 # Results on `dual_number R` related to the norm
 
+> THIS FILE IS SYNCHRONIZED WITH MATHLIB4.
+> Any changes to this file require a corresponding PR to mathlib4.
+
 These are just restatements of similar statements about `triv_sq_zero_ext R M`.
 
 ## Main results

806c0bb8

bump to nightly-2023-02-21-16

mathlib commit https://github.com/leanprover-community/mathlib/commit/bd9851ca476957ea4549eb19b40e7b5ade9428cc

1107b979

Changes in mathlib4

mathlib3

mathlib4

806c0bb8

chore(Analysis): fix mathlib3 names; automated fixes (#11950)

a8a6713b

Diff

@@ -19,7 +19,7 @@ These are just restatements of similar statements about `TrivSqZeroExt R M`.
 
 -/
 
-open NormedSpace -- For `exp`.
+open NormedSpace -- For `NormedSpace.exp`.
 
 namespace DualNumber

806c0bb8

chore(*): remove empty lines between variable statements (#11418)

Empty lines were removed by executing the following Python script twice

import os
import re


# Loop through each file in the repository
for dir_path, dirs, files in os.walk('.'):
  for filename in files:
    if filename.endswith('.lean'):
      file_path = os.path.join(dir_path, filename)

      # Open the file and read its contents
      with open(file_path, 'r') as file:
        content = file.read()

      # Use a regular expression to replace sequences of "variable" lines separated by empty lines
      # with sequences without empty lines
      modified_content = re.sub(r'(variable.*\n)\n(variable(?! .* in))', r'\1\2', content)

      # Write the modified content back to the file
      with open(file_path, 'w') as file:
        file.write(modified_content)

75c86f04

Diff

@@ -26,9 +26,7 @@ namespace DualNumber
 open TrivSqZeroExt
 
 variable (𝕜 : Type*) {R : Type*}
-
 variable [Field 𝕜] [CharZero 𝕜] [CommRing R] [Algebra 𝕜 R]
-
 variable [UniformSpace R] [TopologicalRing R] [CompleteSpace R] [T2Space R]
 
 @[simp]

806c0bb8

chore: generalize typeclasses for exp on DualNumber (#10865)

3fd653ca

Diff

@@ -27,9 +27,9 @@ open TrivSqZeroExt
 
 variable (𝕜 : Type*) {R : Type*}
 
-variable [IsROrC 𝕜] [NormedCommRing R] [NormedAlgebra 𝕜 R]
+variable [Field 𝕜] [CharZero 𝕜] [CommRing R] [Algebra 𝕜 R]
 
-variable [TopologicalRing R] [CompleteSpace R] [T2Space R]
+variable [UniformSpace R] [TopologicalRing R] [CompleteSpace R] [T2Space R]
 
 @[simp]
 theorem exp_eps : exp 𝕜 (eps : DualNumber R) = 1 + eps :=

806c0bb8

chore: exp -> NormedSpace.exp (#8436)

Per discussion at zulip

Co-authored-by: Scott Morrison <scott.morrison@gmail.com>

e4e3f2f5

Diff

@@ -19,6 +19,7 @@ These are just restatements of similar statements about `TrivSqZeroExt R M`.
 
 -/
 
+open NormedSpace -- For `exp`.
 
 namespace DualNumber

806c0bb8

chore: bump to v4.3.0-rc2 (#8366)

PR contents

This is the supremum of

#8284
#8056
#8023
#8332
#8226 (already approved)
#7834 (already approved)

along with some minor fixes from failures on nightly-testing as Mathlib master is merged into it.

Note that some PRs for changes that are already compatible with the current toolchain and will be necessary have already been split out: #8380.

I am hopeful that in future we will be able to progressively merge adaptation PRs into a bump/v4.X.0 branch, so we never end up with a "big merge" like this. However one of these adaptation PRs (#8056) predates my new scheme for combined CI, and it wasn't possible to keep that PR viable in the meantime.

Lean PRs involved in this bump

In particular this includes adjustments for the Lean PRs

leanprover/lean4#2778

We can get rid of all the

local macro_rules | `($x ^ $y) => `(HPow.hPow $x $y) -- Porting note: See issue [lean4#2220](https://github.com/leanprover/lean4/pull/2220)

macros across Mathlib (and in any projects that want to write natural number powers of reals).

leanprover/lean4#2722

Changes the default behaviour of simp to (config := {decide := false}). This makes simp (and consequentially norm_num) less powerful, but also more consistent, and less likely to blow up in long failures. This requires a variety of changes: changing some previously by simp or norm_num to decide or rfl, or adding (config := {decide := true}).

leanprover/lean4#2783

This changed the behaviour of simp so that simp [f] will only unfold "fully applied" occurrences of f. The old behaviour can be recovered with simp (config := { unfoldPartialApp := true }). We may in future add a syntax for this, e.g. simp [!f]; please provide feedback! In the meantime, we have made the following changes:

switching to using explicit lemmas that have the intended level of application
(config := { unfoldPartialApp := true }) in some places, to recover the old behaviour
Using @[eqns] to manually adjust the equation lemmas for a particular definition, recovering the old behaviour just for that definition. See #8371, where we do this for Function.comp and Function.flip.

This change in Lean may require further changes down the line (e.g. adding the !f syntax, and/or upstreaming the special treatment for Function.comp and Function.flip, and/or removing this special treatment). Please keep an open and skeptical mind about these changes!

Co-authored-by: leanprover-community-mathlib4-bot <leanprover-community-mathlib4-bot@users.noreply.github.com> Co-authored-by: Scott Morrison <scott.morrison@gmail.com> Co-authored-by: Eric Wieser <wieser.eric@gmail.com> Co-authored-by: Mauricio Collares <mauricio@collares.org>

40b64f79

Diff

@@ -37,7 +37,7 @@ theorem exp_eps : exp 𝕜 (eps : DualNumber R) = 1 + eps :=
 
 @[simp]
 theorem exp_smul_eps (r : R) : exp 𝕜 (r • eps : DualNumber R) = 1 + r • eps := by
-  rw [eps, ← inr_smul, exp_inr, Nat.cast_one]
+  rw [eps, ← inr_smul, exp_inr]
 #align dual_number.exp_smul_eps DualNumber.exp_smul_eps
 
 end DualNumber

806c0bb8

chore: banish Type _ and Sort _ (#6499)

We remove all possible occurences of Type _ and Sort _ in favor of Type* and Sort*.

This has nice performance benefits.

32de3f67

Diff

@@ -24,7 +24,7 @@ namespace DualNumber
 
 open TrivSqZeroExt
 
-variable (𝕜 : Type _) {R : Type _}
+variable (𝕜 : Type*) {R : Type*}
 
 variable [IsROrC 𝕜] [NormedCommRing R] [NormedAlgebra 𝕜 R]

806c0bb8

chore: script to replace headers with #align_import statements (#5979)

depends on: #5966

Co-authored-by: Eric Wieser <wieser.eric@gmail.com> Co-authored-by: Scott Morrison <scott.morrison@gmail.com>

89aa3a3b

Diff

@@ -2,15 +2,12 @@
 Copyright (c) 2023 Eric Wieser. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Eric Wieser
-
-! This file was ported from Lean 3 source module analysis.normed_space.dual_number
-! leanprover-community/mathlib commit 806c0bb86f6128cfa2f702285727518eb5244390
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathlib.Algebra.DualNumber
 import Mathlib.Analysis.NormedSpace.TrivSqZeroExt
 
+#align_import analysis.normed_space.dual_number from "leanprover-community/mathlib"@"806c0bb86f6128cfa2f702285727518eb5244390"
+
 /-!
 # Results on `DualNumber R` related to the norm

806c0bb8

feat: port Analysis.NormedSpace.DualNumber (#4627)

f0550426

`analysis.normed_space.dual_number` ⟷ `Mathlib.Analysis.NormedSpace.DualNumber`

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

PR contents

Lean PRs involved in this bump

leanprover/lean4#2778

leanprover/lean4#2722

leanprover/lean4#2783

Dependencies 12 + 755

analysis.normed_space.dual_number ⟷ Mathlib.Analysis.NormedSpace.DualNumber

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

PR contents

Lean PRs involved in this bump

leanprover/lean4#2778

leanprover/lean4#2722

leanprover/lean4#2783

Dependencies 12 + 755

`analysis.normed_space.dual_number` ⟷ `Mathlib.Analysis.NormedSpace.DualNumber`