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Diff — Polynomial

Revision #2997 → #3540 · back to history

modifiedGaussian elimination for linear systems4b8486b36a59
FieldFrom #2997To #3540
mathlib.declMatrix.exists_list_transvec_mul_diagonal_mul_list_transvecMatrix.Pivot.exists_list_transvec_mul_diagonal_mul_list_transvec
noteMathlib formalizes Gaussian-elimination-style reductions via transvection decompositions and row echelon reductions on matrices.Any matrix is a product of transvections, a diagonal matrix, and transvections — the Mathlib formalization of Gaussian elimination via elementary row/column operations.
addedGalois's solvability-by-radicals criterion58d2c1e9cc83
addedMonic polynomialde1d4c1bda89
addedFormal derivative in characteristic pb2f73d30d51a