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authorCyril Cohen2021-01-12 18:12:13 +0100
committerGitHub2021-01-12 18:12:13 +0100
commitb6768b0d3724ddd7a68da99dd13694698d9e06d1 (patch)
tree1167bff5f8575f21eeb60a199ac5aafd3cca20c4 /CHANGELOG_UNRELEASED.md
parent6c4a077c7d2e1346501127c72d10fd8800c205f4 (diff)
parent462c14d4dd9752ccb8f12f0047333c285ad6e7ed (diff)
Merge pull request #680 from pi8027/pairwise
Add `pairwise` predicate and some missing lemmas
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+++ b/CHANGELOG_UNRELEASED.md
@@ -10,6 +10,18 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
### Added
+- in `seq.v`,
+ + new higher-order predicate `pairwise r xs` which asserts that the relation
+ `r` holds for any i-th and j-th element of `xs` such that i < j.
+ + new lemmas `allrel_mask(l|r)`, `allrel_filter(l|r)`, `sub(_in)_allrel`,
+ `pairwise_cons`, `pairwise_cat`, `pairwise_rcons`, `pairwise2`,
+ `pairwise_mask`, `pairwise_filter`, `pairwiseP`, `pairwise_all2rel`,
+ `sub(_in)_pairwise`, `eq(_in)_pairwise`, `pairwise_map`, `subseq_pairwise`,
+ `uniq_pairwise`, `pairwise_uniq`, and `pairwise_eq`.
+
+- in `path.v`, new lemmas: `sorted_pairwise(_in)`, `path_pairwise(_in)`,
+ `cycle_all2rel(_in)`, `pairwise_sort`, and `sort_pairwise_stable`.
+
### Changed
- In `ssralg.v` and `ssrint.v`, the nullary ring notations `-%R`, `+%R`, `*%R`,
@@ -17,6 +29,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
### Renamed
+- in `path.v`,
+ + `sub_(path|cycle|sorted)_in` -> `sub_in_(path|cycle|sorted)`
+ + `eq_(path|cycle)_in` -> `eq_in_(path|cycle)`
+
### Removed
### Infrastructure