This is documentation for Mathematica 5, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.1)

Documentation / Mathematica / The Mathematica Book / Mathematica Reference Guide / Developer Context Objects in Mathematica 5 /

Developer`HessenbergDecomposition

FilledSmallSquare HessenbergDecomposition[m] gives the Hessenberg decomposition of a matrix m.

FilledSmallSquare The result is given in the form p, h where p is a unitary matrix such that p . h . Conjugate[Transpose[p]] == m.

FilledSmallSquare See also: SchurDecomposition.