combinatorics.derangements.exponential

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

c2092722

bump to nightly-2024-04-08-08

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

e7589225

Diff

@@ -46,7 +46,7 @@ theorem numDerangements_tendsto_inv_e :
     rw [Real.exp_eq_exp_ℝ]
     exact NormedSpace.expSeries_div_hasSum_exp ℝ (-1 : ℝ)
   intro n
-  rw [← Int.cast_ofNat, numDerangements_sum]
+  rw [← Int.cast_natCast, numDerangements_sum]
   push_cast
   rw [Finset.sum_div]
   -- get down to individual terms

c2092722

bump to nightly-2023-11-29-11

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

049e2cad

Diff

@@ -44,7 +44,7 @@ theorem numDerangements_tendsto_inv_e :
     -- there's no specific lemma for ℝ that ∑ x^k/k! sums to exp(x), but it's
     -- true in more general fields, so use that lemma
     rw [Real.exp_eq_exp_ℝ]
-    exact expSeries_div_hasSum_exp ℝ (-1 : ℝ)
+    exact NormedSpace.expSeries_div_hasSum_exp ℝ (-1 : ℝ)
   intro n
   rw [← Int.cast_ofNat, numDerangements_sum]
   push_cast

c2092722

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) 2021 Henry Swanson. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Henry Swanson, Patrick Massot
 -/
-import Mathbin.Analysis.SpecialFunctions.Exponential
-import Mathbin.Combinatorics.Derangements.Finite
-import Mathbin.Order.Filter.Basic
+import Analysis.SpecialFunctions.Exponential
+import Combinatorics.Derangements.Finite
+import Order.Filter.Basic
 
 #align_import combinatorics.derangements.exponential from "leanprover-community/mathlib"@"c20927220ef87bb4962ba08bf6da2ce3cf50a6dd"

c2092722

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) 2021 Henry Swanson. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Henry Swanson, Patrick Massot
-
-! This file was ported from Lean 3 source module combinatorics.derangements.exponential
-! leanprover-community/mathlib commit c20927220ef87bb4962ba08bf6da2ce3cf50a6dd
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathbin.Analysis.SpecialFunctions.Exponential
 import Mathbin.Combinatorics.Derangements.Finite
 import Mathbin.Order.Filter.Basic
 
+#align_import combinatorics.derangements.exponential from "leanprover-community/mathlib"@"c20927220ef87bb4962ba08bf6da2ce3cf50a6dd"
+
 /-!
 # Derangement exponential series

c2092722

bump to nightly-2023-06-13-21

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

829520ac

Diff

@@ -29,6 +29,7 @@ open scoped BigOperators
 
 open scoped Topology
 
+#print numDerangements_tendsto_inv_e /-
 theorem numDerangements_tendsto_inv_e :
     Tendsto (fun n => (numDerangements n : ℝ) / n.factorial) atTop (𝓝 (Real.exp (-1))) :=
   by
@@ -60,4 +61,5 @@ theorem numDerangements_tendsto_inv_e :
   field_simp [Nat.factorial_ne_zero]
   ring
 #align num_derangements_tendsto_inv_e numDerangements_tendsto_inv_e
+-/

c2092722

bump to nightly-2023-06-08-03

mathlib commit https://github.com/leanprover-community/mathlib/commit/31c24aa72e7b3e5ed97a8412470e904f82b81004

8f04dc2b

Diff

@@ -4,7 +4,7 @@ Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Henry Swanson, Patrick Massot
 
 ! This file was ported from Lean 3 source module combinatorics.derangements.exponential
-! leanprover-community/mathlib commit f2ce6086713c78a7f880485f7917ea547a215982
+! leanprover-community/mathlib commit c20927220ef87bb4962ba08bf6da2ce3cf50a6dd
 ! Please do not edit these lines, except to modify the commit id
 ! if you have ported upstream changes.
 -/
@@ -15,6 +15,9 @@ import Mathbin.Order.Filter.Basic
 /-!
 # Derangement exponential series
 
+> THIS FILE IS SYNCHRONIZED WITH MATHLIB4.
+> Any changes to this file require a corresponding PR to mathlib4.
+
 This file proves that the probability of a permutation on n elements being a derangement is 1/e.
 The specific lemma is `num_derangements_tendsto_inv_e`.
 -/

f2ce6086

bump to nightly-2023-06-04-18

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

3fb4268b

Diff

@@ -43,7 +43,7 @@ theorem numDerangements_tendsto_inv_e :
     -- there's no specific lemma for ℝ that ∑ x^k/k! sums to exp(x), but it's
     -- true in more general fields, so use that lemma
     rw [Real.exp_eq_exp_ℝ]
-    exact exp_series_div_hasSum_exp ℝ (-1 : ℝ)
+    exact expSeries_div_hasSum_exp ℝ (-1 : ℝ)
   intro n
   rw [← Int.cast_ofNat, numDerangements_sum]
   push_cast

f2ce6086

bump to nightly-2023-05-28-18

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

8d353152

Diff

@@ -22,9 +22,9 @@ The specific lemma is `num_derangements_tendsto_inv_e`.
 
 open Filter
 
-open BigOperators
+open scoped BigOperators
 
-open Topology
+open scoped Topology
 
 theorem numDerangements_tendsto_inv_e :
     Tendsto (fun n => (numDerangements n : ℝ) / n.factorial) atTop (𝓝 (Real.exp (-1))) :=

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(Data/Int/Cast): fix confusion between OfNat and Nat.cast lemmas (#11861)

This renames

Int.cast_ofNat to Int.cast_natCast
Int.int_cast_ofNat to Int.cast_ofNat

I think the history here is that this lemma was previously about Int.ofNat, before we globally fixed the simp-normal form to be Nat.cast.

Since the Int.cast_ofNat name is repurposed, it can't be deprecated. Int.int_cast_ofNat is such a wonky name that it was probably never used.

a7ffab83

Diff

@@ -41,7 +41,7 @@ theorem numDerangements_tendsto_inv_e :
     rw [Real.exp_eq_exp_ℝ]
     exact expSeries_div_hasSum_exp ℝ (-1 : ℝ)
   intro n
-  rw [← Int.cast_ofNat, numDerangements_sum]
+  rw [← Int.cast_natCast, numDerangements_sum]
   push_cast
   rw [Finset.sum_div]
   -- get down to individual terms

f2ce6086

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

Per discussion at zulip

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

e4e3f2f5

Diff

@@ -17,7 +17,7 @@ The specific lemma is `numDerangements_tendsto_inv_e`.
 -/
 
 
-open Filter
+open Filter NormedSpace
 
 open scoped BigOperators

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) 2021 Henry Swanson. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Henry Swanson, Patrick Massot
-
-! This file was ported from Lean 3 source module combinatorics.derangements.exponential
-! 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.SpecialFunctions.Exponential
 import Mathlib.Combinatorics.Derangements.Finite
 import Mathlib.Order.Filter.Basic
 
+#align_import combinatorics.derangements.exponential from "leanprover-community/mathlib"@"f2ce6086713c78a7f880485f7917ea547a215982"
+
 /-!
 # Derangement exponential series

f2ce6086

feat: port Combinatorics.Derangements.Exponential (#4716)

d2f957d4

`combinatorics.derangements.exponential` ⟷ `Mathlib.Combinatorics.Derangements.Exponential`

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 12 + 792

combinatorics.derangements.exponential ⟷ Mathlib.Combinatorics.Derangements.Exponential

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Dependencies 12 + 792

`combinatorics.derangements.exponential` ⟷ `Mathlib.Combinatorics.Derangements.Exponential`