[Merged by Bors] - chore(Algebra): change two statements in CubicDiscriminant#31912
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[Merged by Bors] - chore(Algebra): change two statements in CubicDiscriminant#31912alreadydone wants to merge 2 commits intoleanprover-community:masterfrom
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PR summary cf85478f35Import changes for modified filesNo significant changes to the import graph Import changes for all files
Declarations diffNo declarations were harmed in the making of this PR! 🐙 You can run this locally as follows## summary with just the declaration names:
./scripts/declarations_diff.sh <optional_commit>
## more verbose report:
./scripts/declarations_diff.sh long <optional_commit>The doc-module for No changes to technical debt.You can run this locally as
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grunweg
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Thanks!
maintainer merge
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🚀 Pull request has been placed on the maintainer queue by grunweg. |
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bors merge |
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The conclusions of the two lemmas do not mention x,y,z, and we make the assumption not mention x,y,z in this PR. The new and old assumptions are equivalent by [Cubic.splits_iff_roots_eq_three](https://leanprover-community.github.io/mathlib4_docs/Mathlib/Algebra/CubicDiscriminant.html#Cubic.splits_iff_roots_eq_three) earlier in the file. This contribution was created as part of the Heidelberg Lean workshop "Formalising algebraic geometry" in November 2025.
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…lib4 * 'master' of https://github.com/leanprover-community/mathlib4: (3130 commits) feat(SetTheory/ZFC): add `ZFSet.card` (leanprover-community#29365) feat: grind annotations for `choose_spec` (leanprover-community#31927) chore(scripts): update nolints.json (leanprover-community#31975) feat(Analysis): cos (n * π) = (-1) ^ n (leanprover-community#31971) chore: rename `mul_le_mul_right'` to `mul_le_mul_left` (leanprover-community#30242) chore: update Mathlib dependencies 2025-11-22 (leanprover-community#31955) feat(MeasureTheory): ae-measurability notation wrt non-standard sigma-algebra (leanprover-community#31910) doc: add missing spaces around doc code blocks (leanprover-community#31917) chore: update Mathlib dependencies 2025-11-22 (leanprover-community#31945) chore: shortcut instance for `Nat` to be mul-torsion-free (leanprover-community#31027) doc(Topology/Algebra/Algebra): outdated TODO (leanprover-community#31944) feat(EqHaar): add `addHaar_nnreal_smul` (leanprover-community#31922) chore(Algebra): make invertibleInv an instance (leanprover-community#31916) chore(Algebra): change two statements in CubicDiscriminant (leanprover-community#31912) chore(MeasureTheory): mark `map_dirac` as simp (leanprover-community#31909) feat: `LinearOrder` instance for `Empty` (leanprover-community#31889) chore: deprecate all remaining modules in `Analysis/NormedSpace` (leanprover-community#31913) feat(SimpleGraph): weaker condition for paths in acyclic graphs (leanprover-community#25814) chore: do not set `group` when declaring option (leanprover-community#31888) chore: clean up more unused `Decidable*` instances in types (leanprover-community#31934) ...
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The conclusions of the two lemmas do not mention x,y,z, and we make the assumption not mention x,y,z in this PR. The new and old assumptions are equivalent by Cubic.splits_iff_roots_eq_three earlier in the file.
This contribution was created as part of the Heidelberg Lean workshop "Formalising algebraic geometry" in November 2025.