data.fintype.list | Mathlib porting status

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

9003f287

(last sync)

Changes in mathlib3port

mathlib3

mathlib3port

cc70d914

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) 2021 Yakov Pechersky. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Yakov Pechersky
 -/
-import Mathbin.Data.Fintype.Basic
-import Mathbin.Data.Finset.Powerset
+import Data.Fintype.Basic
+import Data.Finset.Powerset
 
 #align_import data.fintype.list from "leanprover-community/mathlib"@"cc70d9141824ea8982d1562ce009952f2c3ece30"

cc70d914

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) 2021 Yakov Pechersky. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Yakov Pechersky
-
-! This file was ported from Lean 3 source module data.fintype.list
-! leanprover-community/mathlib commit cc70d9141824ea8982d1562ce009952f2c3ece30
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathbin.Data.Fintype.Basic
 import Mathbin.Data.Finset.Powerset
 
+#align_import data.fintype.list from "leanprover-community/mathlib"@"cc70d9141824ea8982d1562ce009952f2c3ece30"
+
 /-!
 
 # Fintype instance for nodup lists

cc70d914

bump to nightly-2023-05-14-08

mathlib commit https://github.com/leanprover-community/mathlib/commit/e3fb84046afd187b710170887195d50bada934ee

d31da313

Diff

@@ -71,7 +71,7 @@ end Multiset
 
 #print fintypeNodupList /-
 instance fintypeNodupList [Fintype α] : Fintype { l : List α // l.Nodup } :=
-  Fintype.subtype ((Finset.univ : Finset α).powerset.bunionᵢ fun s => s.val.lists) fun l =>
+  Fintype.subtype ((Finset.univ : Finset α).powerset.biUnion fun s => s.val.lists) fun l =>
     by
     suffices (∃ a : Finset α, a.val = ↑l) ↔ l.nodup by simpa
     constructor

cc70d914

bump to nightly-2023-02-21-16

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

1107b979

Changes in mathlib4

mathlib3

mathlib4

9003f287

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

@@ -27,7 +27,7 @@ which is a TODO.
 -/
 
 
-variable {α : Type _} [DecidableEq α]
+variable {α : Type*} [DecidableEq α]
 
 open List

9003f287

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) 2021 Yakov Pechersky. All rights reserved.
 Released under Apache 2.0 license as described in the file LICENSE.
 Authors: Yakov Pechersky
-
-! This file was ported from Lean 3 source module data.fintype.list
-! leanprover-community/mathlib commit 9003f28797c0664a49e4179487267c494477d853
-! Please do not edit these lines, except to modify the commit id
-! if you have ported upstream changes.
 -/
 import Mathlib.Data.Fintype.Basic
 import Mathlib.Data.Finset.Powerset
 
+#align_import data.fintype.list from "leanprover-community/mathlib"@"9003f28797c0664a49e4179487267c494477d853"
+
 /-!
 
 # Fintype instance for nodup lists

9003f287

chore: fix upper/lowercase in comments (#4360)

Run a non-interactive version of fix-comments.py on all files.
Go through the diff and manually add/discard/edit chunks.

27d257fc

Diff

@@ -20,7 +20,7 @@ admits a `Fintype` instance.
 
 ## Implementation details
 To construct the `Fintype` instance, a function lifting a `Multiset α`
-to the `Finset (list α)` that can construct it is provided.
+to the `Finset (List α)` that can construct it is provided.
 This function is applied to the `Finset.powerset` of `Finset.univ`.
 
 In general, a `DecidableEq` instance is not necessary to define this function,

9003f287

chore: Rename to sSup/iSup (#3938)

As discussed on Zulip

Renames

supₛ → sSup
infₛ → sInf
supᵢ → iSup
infᵢ → iInf
bsupₛ → bsSup
binfₛ → bsInf
bsupᵢ → biSup
binfᵢ → biInf
csupₛ → csSup
cinfₛ → csInf
csupᵢ → ciSup
cinfᵢ → ciInf
unionₛ → sUnion
interₛ → sInter
unionᵢ → iUnion
interᵢ → iInter
bunionₛ → bsUnion
binterₛ → bsInter
bunionᵢ → biUnion
binterᵢ → biInter

Co-authored-by: Parcly Taxel <reddeloostw@gmail.com>

d1eb6264

Diff

@@ -59,7 +59,7 @@ theorem mem_lists_iff (s : Multiset α) (l : List α) : l ∈ lists s ↔ s = 
 end Multiset
 
 instance fintypeNodupList [Fintype α] : Fintype { l : List α // l.Nodup } :=
-  Fintype.subtype ((Finset.univ : Finset α).powerset.bunionᵢ fun s => s.val.lists) fun l => by
+  Fintype.subtype ((Finset.univ : Finset α).powerset.biUnion fun s => s.val.lists) fun l => by
     suffices (∃ a : Finset α, a.val = ↑l) ↔ l.Nodup by simpa
     constructor
     · rintro ⟨s, hs⟩

9003f287

feat: port Data.Fintype.List (#1626)

aa74e27f

`data.fintype.list` ⟷ `Mathlib.Data.Fintype.List`

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Renames

Dependencies 2 + 172

data.fintype.list ⟷ Mathlib.Data.Fintype.List

Changes since the initial port

Changes in mathlib3

Changes in mathlib3port

Changes in mathlib4

Renames

Dependencies 2 + 172

`data.fintype.list` ⟷ `Mathlib.Data.Fintype.List`