Cayley–Hamilton theorem

A square matrix substituted into its own characteristic polynomial gives the zero matrix. It is used to simplify matrix powers and inverses and in linear algebra proofs.

p_A(A)=0

What the symbols mean

a square matrix
the characteristic polynomial of A, p_A(\lambda)=\det(\lambda I - A)

About this formula

  • FieldMathematics
  • TopicLinear algebra
  • LevelUniversity
  • Also calledCayley-Hamilton theorem, Cayley-Hamilton, matrix satisfies its characteristic equation, characteristic polynomial annihilates matrix, square matrix characteristic equation
  • SourceWikidata Q656772

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