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Theorems · Theorem · linear algebra

Module.End.genEigenspace_top_eq_maxUnifEigenspaceIndex

∀ {R : Type v} {M : Type w} [inst : CommRing R] [inst_1 : AddCommGroup M] [inst_2 : Module R M] [IsNoetherian R M]
  (f : Module.End R M) (μ : R), (f.genEigenspace μ) ⊤ = (f.genEigenspace μ) ↑(f.maxUnifEigenspaceIndex μ)

For an endomorphism of a Noetherian module, the maximal eigenspace is always of the form kernel (f - μ • id) ^ k for some k.

Defined in
Mathlib.LinearAlgebra.Eigenspace.Basic
Cited by
5 results in Mathlib
Foundations
Depth 84 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
CommRingAddCommGroupModuleIsNoetherian

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Cites31

Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.

  • DFunLike.coestatement and proof · cited by 62,936
  • Setproof · cited by 53,352
  • Modulestatement and proof · cited by 20,661
  • CommRingstatement and proof · cited by 17,173
  • AddCommGroupstatement and proof · cited by 12,871
  • Top.topstatement and proof · cited by 9,680
  • Submodulestatement and proof · cited by 7,192
  • ENatstatement and proof · cited by 4,985
  • Set.rangeproof · cited by 4,705
  • iSupproof · cited by 2,415
  • Set.extproof · cited by 2,266
  • le_reflproof · cited by 2,061

Cited by5

Results whose statement or proof uses this declaration.