feat: add simple Ordering lemmas
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It seems that my PR "breaks" Batteries by simplifying a proof that expects goals to remain... Update: fixed on leanprover-community/batteries#1102 |
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This PR adds basic lemmas about `Ordering`, describing the interaction of `isLT`/`isLE`/`isGE`/`isGT`, `swap` and the constructors. Additionally, it refactors the instance derivation code such that a `LawfulBEq Ordering` instance is also derived automatically. Some of these lemmas are helpful for the `TreeMap` verification. --------- Co-authored-by: Paul Reichert <[email protected]>
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This PR adds basic lemmas about `Ordering`, describing the interaction of `isLT`/`isLE`/`isGE`/`isGT`, `swap` and the constructors. Additionally, it refactors the instance derivation code such that a `LawfulBEq Ordering` instance is also derived automatically. Some of these lemmas are helpful for the `TreeMap` verification. --------- Co-authored-by: Paul Reichert <[email protected]>
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This PR adds basic lemmas about
Ordering, describing the interaction ofisLT/isLE/isGE/isGT,swapand the constructors. Additionally, it refactors the instance derivation code such that aLawfulBEq Orderinginstance is also derived automatically.Some of these lemmas are helpful for the
TreeMapverification.