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

f2ce6086

(last sync)

Changes in mathlib3port

mathlib3

mathlib3port

fd4551cf

bump to nightly-2024-04-06-08

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

e34029c9

Diff

@@ -3,7 +3,7 @@ Copyright (c) 2022 Yury Kudryashov. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Yury Kudryashov
 -/
-import Analysis.Calculus.FderivAnalytic
+import Analysis.Calculus.FDeriv.Analytic
 import Analysis.Asymptotics.SpecificAsymptotics
 import Analysis.Complex.CauchyIntegral

fd4551cf

bump to nightly-2024-03-17-08

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

22f01ce4

Diff

@@ -91,7 +91,7 @@ theorem differentiableOn_update_limUnder_of_isLittleO {f : ℂ → E} {s : Set 
   suffices DifferentiableOn ℂ F (s \ {c}) ∧ ContinuousAt F c
     by
     rw [differentiable_on_compl_singleton_and_continuous_at_iff hc, ← differentiable_on_dslope hc,
-        dslope_sub_smul] at this  <;>
+        dslope_sub_smul] at this <;>
       try infer_instance
     have hc : tendsto f (𝓝[≠] c) (𝓝 (deriv F c)) :=
       continuous_at_update_same.mp (this.continuous_on.continuous_at hc)
@@ -143,7 +143,7 @@ theorem tendsto_limUnder_of_differentiable_on_punctured_nhds_of_isLittleO {f : 
     (ho : (fun z => f z - f c) =o[𝓝[≠] c] fun z => (z - c)⁻¹) :
     Tendsto f (𝓝[≠] c) (𝓝 <| limUnder (𝓝[≠] c) f) :=
   by
-  rw [eventually_nhdsWithin_iff] at hd 
+  rw [eventually_nhdsWithin_iff] at hd
   have : DifferentiableOn ℂ f ({z | z ≠ c → DifferentiableAt ℂ f z} \ {c}) := fun z hz =>
     (hz.1 hz.2).DifferentiableWithinAt
   have H := differentiable_on_update_lim_of_is_o hd this ho

fd4551cf

bump to nightly-2023-09-24-06

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

5655435f

Diff

@@ -3,9 +3,9 @@ Copyright (c) 2022 Yury Kudryashov. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Yury Kudryashov
 -/
-import Mathbin.Analysis.Calculus.FderivAnalytic
-import Mathbin.Analysis.Asymptotics.SpecificAsymptotics
-import Mathbin.Analysis.Complex.CauchyIntegral
+import Analysis.Calculus.FderivAnalytic
+import Analysis.Asymptotics.SpecificAsymptotics
+import Analysis.Complex.CauchyIntegral
 
 #align_import analysis.complex.removable_singularity from "leanprover-community/mathlib"@"fd4551cfe4b7484b81c2c9ba3405edae27659676"

fd4551cf

bump to nightly-2023-07-20-09

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

9c56d0dd

Diff

@@ -2,16 +2,13 @@
 Copyright (c) 2022 Yury Kudryashov. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Yury Kudryashov
-
-! This file was ported from Lean 3 source module analysis.complex.removable_singularity
-! leanprover-community/mathlib commit fd4551cfe4b7484b81c2c9ba3405edae27659676
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathbin.Analysis.Calculus.FderivAnalytic
 import Mathbin.Analysis.Asymptotics.SpecificAsymptotics
 import Mathbin.Analysis.Complex.CauchyIntegral
 
+#align_import analysis.complex.removable_singularity from "leanprover-community/mathlib"@"fd4551cfe4b7484b81c2c9ba3405edae27659676"
+
 /-!
 # Removable singularity theorem

fd4551cf

bump to nightly-2023-06-13-21

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

829520ac

Diff

@@ -35,6 +35,7 @@ variable {E : Type u} [NormedAddCommGroup E] [NormedSpace ℂ E] [CompleteSpace
 
 namespace Complex
 
+#print Complex.analyticAt_of_differentiable_on_punctured_nhds_of_continuousAt /-
 /-- **Removable singularity** theorem, weak version. If `f : ℂ → E` is differentiable in a punctured
 neighborhood of a point and is continuous at this point, then it is analytic at this point. -/
 theorem analyticAt_of_differentiable_on_punctured_nhds_of_continuousAt {f : ℂ → E} {c : ℂ}
@@ -50,7 +51,9 @@ theorem analyticAt_of_differentiable_on_punctured_nhds_of_continuousAt {f : ℂ
     (has_fpower_series_on_ball_of_differentiable_off_countable (countable_singleton c) hc
         (fun z hz => hRs (diff_subset_diff_left ball_subset_closed_ball hz)) hR0).AnalyticAt
 #align complex.analytic_at_of_differentiable_on_punctured_nhds_of_continuous_at Complex.analyticAt_of_differentiable_on_punctured_nhds_of_continuousAt
+-/
 
+#print Complex.differentiableOn_compl_singleton_and_continuousAt_iff /-
 theorem differentiableOn_compl_singleton_and_continuousAt_iff {f : ℂ → E} {s : Set ℂ} {c : ℂ}
     (hs : s ∈ 𝓝 c) : DifferentiableOn ℂ f (s \ {c}) ∧ ContinuousAt f c ↔ DifferentiableOn ℂ f s :=
   by
@@ -66,7 +69,9 @@ theorem differentiableOn_compl_singleton_and_continuousAt_iff {f : ℂ → E} {s
     simpa only [DifferentiableWithinAt, HasFDerivWithinAt, hne.nhds_within_diff_singleton] using
       hd x ⟨hx, hne⟩
 #align complex.differentiable_on_compl_singleton_and_continuous_at_iff Complex.differentiableOn_compl_singleton_and_continuousAt_iff
+-/
 
+#print Complex.differentiableOn_dslope /-
 theorem differentiableOn_dslope {f : ℂ → E} {s : Set ℂ} {c : ℂ} (hc : s ∈ 𝓝 c) :
     DifferentiableOn ℂ (dslope f c) s ↔ DifferentiableOn ℂ f s :=
   ⟨fun h => h.of_dslope, fun h =>
@@ -74,7 +79,9 @@ theorem differentiableOn_dslope {f : ℂ → E} {s : Set ℂ} {c : ℂ} (hc : s
       ⟨Iff.mpr (differentiableOn_dslope_of_nmem fun h => h.2 rfl) (h.mono <| diff_subset _ _),
         continuousAt_dslope_same.2 <| h.DifferentiableAt hc⟩⟩
 #align complex.differentiable_on_dslope Complex.differentiableOn_dslope
+-/
 
+#print Complex.differentiableOn_update_limUnder_of_isLittleO /-
 /-- **Removable singularity** theorem: if `s` is a neighborhood of `c : ℂ`, a function `f : ℂ → E`
 is complex differentiable on `s \ {c}`, and $f(z) - f(c)=o((z-c)^{-1})$, then `f` redefined to be
 equal to `lim (𝓝[≠] c) f` at `c` is complex differentiable on `s`. -/
@@ -99,7 +106,9 @@ theorem differentiableOn_update_limUnder_of_isLittleO {f : ℂ → E} {s : Set 
     (continuous_within_at_id.tendsto.sub tendsto_const_nhds).smul tendsto_const_nhds
   simpa [← smul_add, ContinuousWithinAt] using H.add H'
 #align complex.differentiable_on_update_lim_of_is_o Complex.differentiableOn_update_limUnder_of_isLittleO
+-/
 
+#print Complex.differentiableOn_update_limUnder_insert_of_isLittleO /-
 /-- **Removable singularity** theorem: if `s` is a punctured neighborhood of `c : ℂ`, a function
 `f : ℂ → E` is complex differentiable on `s`, and $f(z) - f(c)=o((z-c)^{-1})$, then `f` redefined to
 be equal to `lim (𝓝[≠] c) f` at `c` is complex differentiable on `{c} ∪ s`. -/
@@ -110,7 +119,9 @@ theorem differentiableOn_update_limUnder_insert_of_isLittleO {f : ℂ → E} {s
   differentiableOn_update_limUnder_of_isLittleO (insert_mem_nhds_iff.2 hc)
     (hd.mono fun z hz => hz.1.resolve_left hz.2) ho
 #align complex.differentiable_on_update_lim_insert_of_is_o Complex.differentiableOn_update_limUnder_insert_of_isLittleO
+-/
 
+#print Complex.differentiableOn_update_limUnder_of_bddAbove /-
 /-- **Removable singularity** theorem: if `s` is a neighborhood of `c : ℂ`, a function `f : ℂ → E`
 is complex differentiable and is bounded on `s \ {c}`, then `f` redefined to be equal to
 `lim (𝓝[≠] c) f` at `c` is complex differentiable on `s`. -/
@@ -125,7 +136,9 @@ theorem differentiableOn_update_limUnder_of_bddAbove {f : ℂ → E} {s : Set 
           mem_nhdsWithin_iff_exists_mem_nhds_inter.2
             ⟨s, hc, fun z hz => norm_sub_le_of_le (hC <| mem_image_of_mem _ hz) le_rfl⟩⟩
 #align complex.differentiable_on_update_lim_of_bdd_above Complex.differentiableOn_update_limUnder_of_bddAbove
+-/
 
+#print Complex.tendsto_limUnder_of_differentiable_on_punctured_nhds_of_isLittleO /-
 /-- **Removable singularity** theorem: if a function `f : ℂ → E` is complex differentiable on a
 punctured neighborhood of `c` and $f(z) - f(c)=o((z-c)^{-1})$, then `f` has a limit at `c`. -/
 theorem tendsto_limUnder_of_differentiable_on_punctured_nhds_of_isLittleO {f : ℂ → E} {c : ℂ}
@@ -139,7 +152,9 @@ theorem tendsto_limUnder_of_differentiable_on_punctured_nhds_of_isLittleO {f : 
   have H := differentiable_on_update_lim_of_is_o hd this ho
   exact continuousAt_update_same.1 (H.differentiable_at hd).ContinuousAt
 #align complex.tendsto_lim_of_differentiable_on_punctured_nhds_of_is_o Complex.tendsto_limUnder_of_differentiable_on_punctured_nhds_of_isLittleO
+-/
 
+#print Complex.tendsto_limUnder_of_differentiable_on_punctured_nhds_of_bounded_under /-
 /-- **Removable singularity** theorem: if a function `f : ℂ → E` is complex differentiable and
 bounded on a punctured neighborhood of `c`, then `f` has a limit at `c`. -/
 theorem tendsto_limUnder_of_differentiable_on_punctured_nhds_of_bounded_under {f : ℂ → E} {c : ℂ}
@@ -148,7 +163,9 @@ theorem tendsto_limUnder_of_differentiable_on_punctured_nhds_of_bounded_under {f
     Tendsto f (𝓝[≠] c) (𝓝 <| limUnder (𝓝[≠] c) f) :=
   tendsto_limUnder_of_differentiable_on_punctured_nhds_of_isLittleO hd hb.isLittleO_sub_self_inv
 #align complex.tendsto_lim_of_differentiable_on_punctured_nhds_of_bounded_under Complex.tendsto_limUnder_of_differentiable_on_punctured_nhds_of_bounded_under
+-/
 
+#print Complex.two_pi_I_inv_smul_circleIntegral_sub_sq_inv_smul_of_differentiable /-
 /-- The Cauchy formula for the derivative of a holomorphic function. -/
 theorem two_pi_I_inv_smul_circleIntegral_sub_sq_inv_smul_of_differentiable {U : Set ℂ}
     (hU : IsOpen U) {c w₀ : ℂ} {R : ℝ} {f : ℂ → E} (hc : closedBall c R ⊆ U)
@@ -181,6 +198,7 @@ theorem two_pi_I_inv_smul_circleIntegral_sub_sq_inv_smul_of_differentiable {U :
     simp only [dslope_of_ne, metric.sphere_disjoint_ball.ne_of_mem hz hw₀, slope, ← smul_assoc, sq,
       mul_inv, Ne.def, not_false_iff, vsub_eq_sub, Algebra.id.smul_eq_mul]
 #align complex.two_pi_I_inv_smul_circle_integral_sub_sq_inv_smul_of_differentiable Complex.two_pi_I_inv_smul_circleIntegral_sub_sq_inv_smul_of_differentiable
+-/
 
 end Complex

fd4551cf

bump to nightly-2023-06-11-03

mathlib commit https://github.com/leanprover-community/mathlib/commit/c471da714c044131b90c133701e51b877c246677

6960a941

Diff

@@ -4,7 +4,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Yury Kudryashov
 
 ! This file was ported from Lean 3 source module analysis.complex.removable_singularity
-! leanprover-community/mathlib commit f2ce6086713c78a7f880485f7917ea547a215982
+! leanprover-community/mathlib commit fd4551cfe4b7484b81c2c9ba3405edae27659676
 ! Please do not edit these lines, except to modify the commit id
 ! if you have ported upstream changes.
 -/
@@ -15,6 +15,9 @@ import Mathbin.Analysis.Complex.CauchyIntegral
 /-!
 # Removable singularity theorem
 
+> THIS FILE IS SYNCHRONIZED WITH MATHLIB4.
+> Any changes to this file require a corresponding PR to mathlib4.
+
 In this file we prove Riemann's removable singularity theorem: if `f : ℂ → E` is complex
 differentiable in a punctured neighborhood of a point `c` and is bounded in a punctured neighborhood
 of `c` (or, more generally, $f(z) - f(c)=o((z-c)^{-1})$), then it has a limit at `c` and the

f2ce6086

bump to nightly-2023-06-10-07

mathlib commit https://github.com/leanprover-community/mathlib/commit/a3e83f0fa4391c8740f7d773a7a9b74e311ae2a3

3fdc57bc

Diff

@@ -150,7 +150,7 @@ theorem tendsto_limUnder_of_differentiable_on_punctured_nhds_of_bounded_under {f
 theorem two_pi_I_inv_smul_circleIntegral_sub_sq_inv_smul_of_differentiable {U : Set ℂ}
     (hU : IsOpen U) {c w₀ : ℂ} {R : ℝ} {f : ℂ → E} (hc : closedBall c R ⊆ U)
     (hf : DifferentiableOn ℂ f U) (hw₀ : w₀ ∈ ball c R) :
-    ((2 * π * I : ℂ)⁻¹ • ∮ z in C(c, R), ((z - w₀) ^ 2)⁻¹ • f z) = deriv f w₀ :=
+    (2 * π * I : ℂ)⁻¹ • ∮ z in C(c, R), ((z - w₀) ^ 2)⁻¹ • f z = deriv f w₀ :=
   by
   -- We apply the removable singularity theorem and the Cauchy formula to `dslope f w₀`
   have hR : 0 < R := not_le.mp (ball_eq_empty.not.mp (nonempty_of_mem hw₀).ne_empty)
@@ -170,7 +170,7 @@ theorem two_pi_I_inv_smul_circleIntegral_sub_sq_inv_smul_of_differentiable {U :
       exact h1.smul (hf.continuous_on.mono (sphere_subset_closed_ball.trans hc))
     have h3 : CircleIntegrable (fun z : ℂ => ((z - w₀) ^ 2)⁻¹ • f w₀) c R :=
       ContinuousOn.circleIntegrable (pos_of_mem_ball hw₀).le (h1.smul continuousOn_const)
-    have h4 : (∮ z : ℂ in C(c, R), ((z - w₀) ^ 2)⁻¹) = 0 := by
+    have h4 : ∮ z : ℂ in C(c, R), ((z - w₀) ^ 2)⁻¹ = 0 := by
       simpa using circleIntegral.integral_sub_zpow_of_ne (by decide : (-2 : ℤ) ≠ -1) c w₀ R
     simp only [smul_sub, circleIntegral.integral_sub h2 h3, h4, circleIntegral.integral_smul_const,
       zero_smul, sub_zero]

f2ce6086

bump to nightly-2023-06-09-15

mathlib commit https://github.com/leanprover-community/mathlib/commit/7e5137f579de09a059a5ce98f364a04e221aabf0

2b0a7039

Diff

@@ -147,7 +147,7 @@ theorem tendsto_limUnder_of_differentiable_on_punctured_nhds_of_bounded_under {f
 #align complex.tendsto_lim_of_differentiable_on_punctured_nhds_of_bounded_under Complex.tendsto_limUnder_of_differentiable_on_punctured_nhds_of_bounded_under
 
 /-- The Cauchy formula for the derivative of a holomorphic function. -/
-theorem two_pi_i_inv_smul_circleIntegral_sub_sq_inv_smul_of_differentiable {U : Set ℂ}
+theorem two_pi_I_inv_smul_circleIntegral_sub_sq_inv_smul_of_differentiable {U : Set ℂ}
     (hU : IsOpen U) {c w₀ : ℂ} {R : ℝ} {f : ℂ → E} (hc : closedBall c R ⊆ U)
     (hf : DifferentiableOn ℂ f U) (hw₀ : w₀ ∈ ball c R) :
     ((2 * π * I : ℂ)⁻¹ • ∮ z in C(c, R), ((z - w₀) ^ 2)⁻¹ • f z) = deriv f w₀ :=
@@ -177,7 +177,7 @@ theorem two_pi_i_inv_smul_circleIntegral_sub_sq_inv_smul_of_differentiable {U :
   · refine' circleIntegral.integral_congr (pos_of_mem_ball hw₀).le fun z hz => _
     simp only [dslope_of_ne, metric.sphere_disjoint_ball.ne_of_mem hz hw₀, slope, ← smul_assoc, sq,
       mul_inv, Ne.def, not_false_iff, vsub_eq_sub, Algebra.id.smul_eq_mul]
-#align complex.two_pi_I_inv_smul_circle_integral_sub_sq_inv_smul_of_differentiable Complex.two_pi_i_inv_smul_circleIntegral_sub_sq_inv_smul_of_differentiable
+#align complex.two_pi_I_inv_smul_circle_integral_sub_sq_inv_smul_of_differentiable Complex.two_pi_I_inv_smul_circleIntegral_sub_sq_inv_smul_of_differentiable
 
 end Complex

f2ce6086

bump to nightly-2023-06-04-18

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

3fb4268b

Diff

@@ -131,7 +131,7 @@ theorem tendsto_limUnder_of_differentiable_on_punctured_nhds_of_isLittleO {f : 
     Tendsto f (𝓝[≠] c) (𝓝 <| limUnder (𝓝[≠] c) f) :=
   by
   rw [eventually_nhdsWithin_iff] at hd 
-  have : DifferentiableOn ℂ f ({ z | z ≠ c → DifferentiableAt ℂ f z } \ {c}) := fun z hz =>
+  have : DifferentiableOn ℂ f ({z | z ≠ c → DifferentiableAt ℂ f z} \ {c}) := fun z hz =>
     (hz.1 hz.2).DifferentiableWithinAt
   have H := differentiable_on_update_lim_of_is_o hd this ho
   exact continuousAt_update_same.1 (H.differentiable_at hd).ContinuousAt

f2ce6086

bump to nightly-2023-06-01-16

mathlib commit https://github.com/leanprover-community/mathlib/commit/cca40788df1b8755d5baf17ab2f27dacc2e17acb

b9c87c70

Diff

@@ -42,7 +42,7 @@ theorem analyticAt_of_differentiable_on_punctured_nhds_of_continuousAt {f : ℂ
   replace hc : ContinuousOn f (closed_ball c R)
   · refine' fun z hz => ContinuousAt.continuousWithinAt _
     rcases eq_or_ne z c with (rfl | hne)
-    exacts[hc, (hRs ⟨hz, hne⟩).ContinuousAt]
+    exacts [hc, (hRs ⟨hz, hne⟩).ContinuousAt]
   exact
     (has_fpower_series_on_ball_of_differentiable_off_countable (countable_singleton c) hc
         (fun z hz => hRs (diff_subset_diff_left ball_subset_closed_ball hz)) hR0).AnalyticAt
@@ -84,7 +84,7 @@ theorem differentiableOn_update_limUnder_of_isLittleO {f : ℂ → E} {s : Set 
   suffices DifferentiableOn ℂ F (s \ {c}) ∧ ContinuousAt F c
     by
     rw [differentiable_on_compl_singleton_and_continuous_at_iff hc, ← differentiable_on_dslope hc,
-        dslope_sub_smul] at this <;>
+        dslope_sub_smul] at this  <;>
       try infer_instance
     have hc : tendsto f (𝓝[≠] c) (𝓝 (deriv F c)) :=
       continuous_at_update_same.mp (this.continuous_on.continuous_at hc)
@@ -130,7 +130,7 @@ theorem tendsto_limUnder_of_differentiable_on_punctured_nhds_of_isLittleO {f : 
     (ho : (fun z => f z - f c) =o[𝓝[≠] c] fun z => (z - c)⁻¹) :
     Tendsto f (𝓝[≠] c) (𝓝 <| limUnder (𝓝[≠] c) f) :=
   by
-  rw [eventually_nhdsWithin_iff] at hd
+  rw [eventually_nhdsWithin_iff] at hd 
   have : DifferentiableOn ℂ f ({ z | z ≠ c → DifferentiableAt ℂ f z } \ {c}) := fun z hz =>
     (hz.1 hz.2).DifferentiableWithinAt
   have H := differentiable_on_update_lim_of_is_o hd this ho

f2ce6086

bump to nightly-2023-05-28-18

mathlib commit https://github.com/leanprover-community/mathlib/commit/917c3c072e487b3cccdbfeff17e75b40e45f66cb

8d353152

Diff

@@ -24,7 +24,7 @@ function `function.update f c (lim (𝓝[≠] c) f)` is complex differentiable i
 
 open TopologicalSpace Metric Set Filter Asymptotics Function
 
-open Topology Filter NNReal Real
+open scoped Topology Filter NNReal Real
 
 universe u

f2ce6086

bump to nightly-2023-05-22-01

mathlib commit https://github.com/leanprover-community/mathlib/commit/33c67ae661dd8988516ff7f247b0be3018cdd952

a4206c98

Diff

@@ -60,7 +60,7 @@ theorem differentiableOn_compl_singleton_and_continuousAt_iff {f : ℂ → E} {s
     refine' eventually_nhdsWithin_iff.2 ((eventually_mem_nhds.2 hs).mono fun z hz hzx => _)
     exact hd.differentiable_at (inter_mem hz (is_open_ne.mem_nhds hzx))
   ·
-    simpa only [DifferentiableWithinAt, HasFderivWithinAt, hne.nhds_within_diff_singleton] using
+    simpa only [DifferentiableWithinAt, HasFDerivWithinAt, hne.nhds_within_diff_singleton] using
       hd x ⟨hx, hne⟩
 #align complex.differentiable_on_compl_singleton_and_continuous_at_iff Complex.differentiableOn_compl_singleton_and_continuousAt_iff

f2ce6086

bump to nightly-2023-04-12-20

mathlib commit https://github.com/leanprover-community/mathlib/commit/039ef89bef6e58b32b62898dd48e9d1a4312bb65

0809e5be

Diff

@@ -75,7 +75,7 @@ theorem differentiableOn_dslope {f : ℂ → E} {s : Set ℂ} {c : ℂ} (hc : s
 /-- **Removable singularity** theorem: if `s` is a neighborhood of `c : ℂ`, a function `f : ℂ → E`
 is complex differentiable on `s \ {c}`, and $f(z) - f(c)=o((z-c)^{-1})$, then `f` redefined to be
 equal to `lim (𝓝[≠] c) f` at `c` is complex differentiable on `s`. -/
-theorem differentiableOn_update_limUnder_of_isOCat {f : ℂ → E} {s : Set ℂ} {c : ℂ} (hc : s ∈ 𝓝 c)
+theorem differentiableOn_update_limUnder_of_isLittleO {f : ℂ → E} {s : Set ℂ} {c : ℂ} (hc : s ∈ 𝓝 c)
     (hd : DifferentiableOn ℂ f (s \ {c}))
     (ho : (fun z => f z - f c) =o[𝓝[≠] c] fun z => (z - c)⁻¹) :
     DifferentiableOn ℂ (update f c (limUnder (𝓝[≠] c) f)) s :=
@@ -95,18 +95,18 @@ theorem differentiableOn_update_limUnder_of_isOCat {f : ℂ → E} {s : Set ℂ}
   have H' : tendsto (fun z => (z - c) • f c) (𝓝[≠] c) (𝓝 (F c)) :=
     (continuous_within_at_id.tendsto.sub tendsto_const_nhds).smul tendsto_const_nhds
   simpa [← smul_add, ContinuousWithinAt] using H.add H'
-#align complex.differentiable_on_update_lim_of_is_o Complex.differentiableOn_update_limUnder_of_isOCat
+#align complex.differentiable_on_update_lim_of_is_o Complex.differentiableOn_update_limUnder_of_isLittleO
 
 /-- **Removable singularity** theorem: if `s` is a punctured neighborhood of `c : ℂ`, a function
 `f : ℂ → E` is complex differentiable on `s`, and $f(z) - f(c)=o((z-c)^{-1})$, then `f` redefined to
 be equal to `lim (𝓝[≠] c) f` at `c` is complex differentiable on `{c} ∪ s`. -/
-theorem differentiableOn_update_limUnder_insert_of_isOCat {f : ℂ → E} {s : Set ℂ} {c : ℂ}
+theorem differentiableOn_update_limUnder_insert_of_isLittleO {f : ℂ → E} {s : Set ℂ} {c : ℂ}
     (hc : s ∈ 𝓝[≠] c) (hd : DifferentiableOn ℂ f s)
     (ho : (fun z => f z - f c) =o[𝓝[≠] c] fun z => (z - c)⁻¹) :
     DifferentiableOn ℂ (update f c (limUnder (𝓝[≠] c) f)) (insert c s) :=
-  differentiableOn_update_limUnder_of_isOCat (insert_mem_nhds_iff.2 hc)
+  differentiableOn_update_limUnder_of_isLittleO (insert_mem_nhds_iff.2 hc)
     (hd.mono fun z hz => hz.1.resolve_left hz.2) ho
-#align complex.differentiable_on_update_lim_insert_of_is_o Complex.differentiableOn_update_limUnder_insert_of_isOCat
+#align complex.differentiable_on_update_lim_insert_of_is_o Complex.differentiableOn_update_limUnder_insert_of_isLittleO
 
 /-- **Removable singularity** theorem: if `s` is a neighborhood of `c : ℂ`, a function `f : ℂ → E`
 is complex differentiable and is bounded on `s \ {c}`, then `f` redefined to be equal to
@@ -114,8 +114,8 @@ is complex differentiable and is bounded on `s \ {c}`, then `f` redefined to be
 theorem differentiableOn_update_limUnder_of_bddAbove {f : ℂ → E} {s : Set ℂ} {c : ℂ} (hc : s ∈ 𝓝 c)
     (hd : DifferentiableOn ℂ f (s \ {c})) (hb : BddAbove (norm ∘ f '' (s \ {c}))) :
     DifferentiableOn ℂ (update f c (limUnder (𝓝[≠] c) f)) s :=
-  differentiableOn_update_limUnder_of_isOCat hc hd <|
-    IsBoundedUnder.isOCat_sub_self_inv <|
+  differentiableOn_update_limUnder_of_isLittleO hc hd <|
+    IsBoundedUnder.isLittleO_sub_self_inv <|
       let ⟨C, hC⟩ := hb
       ⟨C + ‖f c‖,
         eventually_map.2 <|
@@ -125,7 +125,7 @@ theorem differentiableOn_update_limUnder_of_bddAbove {f : ℂ → E} {s : Set 
 
 /-- **Removable singularity** theorem: if a function `f : ℂ → E` is complex differentiable on a
 punctured neighborhood of `c` and $f(z) - f(c)=o((z-c)^{-1})$, then `f` has a limit at `c`. -/
-theorem tendsto_limUnder_of_differentiable_on_punctured_nhds_of_isOCat {f : ℂ → E} {c : ℂ}
+theorem tendsto_limUnder_of_differentiable_on_punctured_nhds_of_isLittleO {f : ℂ → E} {c : ℂ}
     (hd : ∀ᶠ z in 𝓝[≠] c, DifferentiableAt ℂ f z)
     (ho : (fun z => f z - f c) =o[𝓝[≠] c] fun z => (z - c)⁻¹) :
     Tendsto f (𝓝[≠] c) (𝓝 <| limUnder (𝓝[≠] c) f) :=
@@ -135,7 +135,7 @@ theorem tendsto_limUnder_of_differentiable_on_punctured_nhds_of_isOCat {f : ℂ
     (hz.1 hz.2).DifferentiableWithinAt
   have H := differentiable_on_update_lim_of_is_o hd this ho
   exact continuousAt_update_same.1 (H.differentiable_at hd).ContinuousAt
-#align complex.tendsto_lim_of_differentiable_on_punctured_nhds_of_is_o Complex.tendsto_limUnder_of_differentiable_on_punctured_nhds_of_isOCat
+#align complex.tendsto_lim_of_differentiable_on_punctured_nhds_of_is_o Complex.tendsto_limUnder_of_differentiable_on_punctured_nhds_of_isLittleO
 
 /-- **Removable singularity** theorem: if a function `f : ℂ → E` is complex differentiable and
 bounded on a punctured neighborhood of `c`, then `f` has a limit at `c`. -/
@@ -143,7 +143,7 @@ theorem tendsto_limUnder_of_differentiable_on_punctured_nhds_of_bounded_under {f
     (hd : ∀ᶠ z in 𝓝[≠] c, DifferentiableAt ℂ f z)
     (hb : IsBoundedUnder (· ≤ ·) (𝓝[≠] c) fun z => ‖f z - f c‖) :
     Tendsto f (𝓝[≠] c) (𝓝 <| limUnder (𝓝[≠] c) f) :=
-  tendsto_limUnder_of_differentiable_on_punctured_nhds_of_isOCat hd hb.isOCat_sub_self_inv
+  tendsto_limUnder_of_differentiable_on_punctured_nhds_of_isLittleO hd hb.isLittleO_sub_self_inv
 #align complex.tendsto_lim_of_differentiable_on_punctured_nhds_of_bounded_under Complex.tendsto_limUnder_of_differentiable_on_punctured_nhds_of_bounded_under
 
 /-- The Cauchy formula for the derivative of a holomorphic function. -/

f2ce6086

bump to nightly-2023-03-10-14

mathlib commit https://github.com/leanprover-community/mathlib/commit/ddec54a71a0dd025c05445d467f1a2b7d586a3ba

24f14899

Diff

@@ -150,7 +150,7 @@ theorem tendsto_limUnder_of_differentiable_on_punctured_nhds_of_bounded_under {f
 theorem two_pi_i_inv_smul_circleIntegral_sub_sq_inv_smul_of_differentiable {U : Set ℂ}
     (hU : IsOpen U) {c w₀ : ℂ} {R : ℝ} {f : ℂ → E} (hc : closedBall c R ⊆ U)
     (hf : DifferentiableOn ℂ f U) (hw₀ : w₀ ∈ ball c R) :
-    ((2 * π * i : ℂ)⁻¹ • ∮ z in C(c, R), ((z - w₀) ^ 2)⁻¹ • f z) = deriv f w₀ :=
+    ((2 * π * I : ℂ)⁻¹ • ∮ z in C(c, R), ((z - w₀) ^ 2)⁻¹ • f z) = deriv f w₀ :=
   by
   -- We apply the removable singularity theorem and the Cauchy formula to `dslope f w₀`
   have hR : 0 < R := not_le.mp (ball_eq_empty.not.mp (nonempty_of_mem hw₀).ne_empty)

f2ce6086

bump to nightly-2023-02-21-16

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

1107b979

Changes in mathlib4

mathlib3

mathlib4

f2ce6086

chore: avoid Ne.def (adaptation for nightly-2024-03-27) (#11801)

1b40c7bc

Diff

@@ -158,7 +158,7 @@ theorem two_pi_I_inv_smul_circleIntegral_sub_sq_inv_smul_of_differentiable {U :
       zero_smul, sub_zero]
   · refine' circleIntegral.integral_congr (pos_of_mem_ball hw₀).le fun z hz => _
     simp only [dslope_of_ne, Metric.sphere_disjoint_ball.ne_of_mem hz hw₀, slope, ← smul_assoc, sq,
-      mul_inv, Ne.def, not_false_iff, vsub_eq_sub, Algebra.id.smul_eq_mul]
+      mul_inv, Ne, not_false_iff, vsub_eq_sub, Algebra.id.smul_eq_mul]
 set_option linter.uppercaseLean3 false in
 #align complex.two_pi_I_inv_smul_circle_integral_sub_sq_inv_smul_of_differentiable Complex.two_pi_I_inv_smul_circleIntegral_sub_sq_inv_smul_of_differentiable

f2ce6086

chore: remove stream-of-consciousness uses of have, replace and suffices (#10640)

No changes to tactic file, it's just boring fixes throughout the library.

This follows on from #6964.

Co-authored-by: sgouezel <sebastien.gouezel@univ-rennes1.fr> Co-authored-by: Eric Wieser <wieser.eric@gmail.com>

a13e8040

Diff

@@ -35,8 +35,8 @@ theorem analyticAt_of_differentiable_on_punctured_nhds_of_continuousAt {f : ℂ
     (hd : ∀ᶠ z in 𝓝[≠] c, DifferentiableAt ℂ f z) (hc : ContinuousAt f c) : AnalyticAt ℂ f c := by
   rcases (nhdsWithin_hasBasis nhds_basis_closedBall _).mem_iff.1 hd with ⟨R, hR0, hRs⟩
   lift R to ℝ≥0 using hR0.le
-  replace hc : ContinuousOn f (closedBall c R)
-  · refine' fun z hz => ContinuousAt.continuousWithinAt _
+  replace hc : ContinuousOn f (closedBall c R) := by
+    refine' fun z hz => ContinuousAt.continuousWithinAt _
     rcases eq_or_ne z c with (rfl | hne)
     exacts [hc, (hRs ⟨hz, hne⟩).continuousAt]
   exact (hasFPowerSeriesOnBall_of_differentiable_off_countable (countable_singleton c) hc

f2ce6086

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

@@ -23,8 +23,6 @@ open TopologicalSpace Metric Set Filter Asymptotics Function
 
 open scoped Topology Filter NNReal Real
 
-local macro_rules | `($x ^ $y) => `(HPow.hPow $x $y) -- Porting note: See issue lean4#2220
-
 universe u
 
 variable {E : Type u} [NormedAddCommGroup E] [NormedSpace ℂ E] [CompleteSpace E]

f2ce6086

chore: regularize HPow.hPow porting notes (#6465)

0f85d19f

Diff

@@ -23,7 +23,7 @@ open TopologicalSpace Metric Set Filter Asymptotics Function
 
 open scoped Topology Filter NNReal Real
 
-local macro_rules | `($x ^ $y) => `(HPow.hPow $x $y) -- Porting note: See issue #2220
+local macro_rules | `($x ^ $y) => `(HPow.hPow $x $y) -- Porting note: See issue lean4#2220
 
 universe u

f2ce6086

chore(Deriv): rename some files (#6167)

Move some files to Analysis/Calculus/FDeriv

7433944e

Diff

@@ -3,7 +3,7 @@ Copyright (c) 2022 Yury Kudryashov. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Yury Kudryashov
 -/
-import Mathlib.Analysis.Calculus.FDerivAnalytic
+import Mathlib.Analysis.Calculus.FDeriv.Analytic
 import Mathlib.Analysis.Asymptotics.SpecificAsymptotics
 import Mathlib.Analysis.Complex.CauchyIntegral

f2ce6086

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

@@ -2,16 +2,13 @@
 Copyright (c) 2022 Yury Kudryashov. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Yury Kudryashov
-
-! This file was ported from Lean 3 source module analysis.complex.removable_singularity
-! leanprover-community/mathlib commit f2ce6086713c78a7f880485f7917ea547a215982
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathlib.Analysis.Calculus.FDerivAnalytic
 import Mathlib.Analysis.Asymptotics.SpecificAsymptotics
 import Mathlib.Analysis.Complex.CauchyIntegral
 
+#align_import analysis.complex.removable_singularity from "leanprover-community/mathlib"@"f2ce6086713c78a7f880485f7917ea547a215982"
+
 /-!
 # Removable singularity theorem

f2ce6086

feat: port Analysis.Complex.RemovableSingularity (#4900)

0e19980a

`analysis.complex.removable_singularity` ⟷ `Mathlib.Analysis.Complex.RemovableSingularity`

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 + 1082

analysis.complex.removable_singularity ⟷ Mathlib.Analysis.Complex.RemovableSingularity

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 + 1082

`analysis.complex.removable_singularity` ⟷ `Mathlib.Analysis.Complex.RemovableSingularity`