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Generalized Hessenberg Matrices

Result description

We define and study generalized Hessenberg matrices, i.e. square matrices which have subdiagonal rank one. Here, subdiagonal rank means the maximum order of a nonsingular submatrix all of whose entries are in the subdiagonal part. We prove that the property of being generalized Hessenberg matrix is preserved by post- and premultiplication by a nonsingular upper triangular matrix, by inversion (for invertible matrices), etc. We also study a special kind of generalized Hessenberg matrices.

Keywords

Hessenberg matrixstructure ranksubdiagonal rank

The result's identifiers

Alternative languages

  • Result language

    angličtina

  • Original language name

    Generalized Hessenberg Matrices

  • Original language description

    We define and study generalized Hessenberg matrices, i.e. square matrices which have subdiagonal rank one. Here, subdiagonal rank means the maximum order of a nonsingular submatrix all of whose entries are in the subdiagonal part. We prove that the property of being generalized Hessenberg matrix is preserved by post- and premultiplication by a nonsingular upper triangular matrix, by inversion (for invertible matrices), etc. We also study a special kind of generalized Hessenberg matrices.

  • Czech name

    Zobecněné Hessenbergovy matice

  • Czech description

    Jsou zavedeny a vyšetřovány zobecněné Hessenbergovy matice, tj. čtvercové matice, které mají poddiagonální hodnost jedna. Pod poddiagonální hodností se rozumí maximální řád nesingulární podmatice, jejíž všechny prvky jsou v poddiagonální části matice. Dokazuje se, že vlastnost být zobecněnou Hessenbergovou maticí se zachovává násobením zprava anebo zleva regulární horní trojúhelníkovou maticí, invertováním (je-li matice sama nesingulární), atd. Vyšetřuje se také jeden speciální typ zobecněných Hessenbergových matic.

Classification

  • Type

    Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    BA - General mathematics

  • OECD FORD branch

Result continuities

Others

  • Publication year

    2004

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Linear Algebra and its Applications

  • ISSN

    0024-3795

  • e-ISSN

  • Volume of the periodical

    380

  • Issue of the periodical within the volume

    -

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    11

  • Pages from-to

    95-105

  • UT code for WoS article

  • EID of the result in the Scopus database

Basic information

Result type

Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

Jx

CEP

BA - General mathematics

Year of implementation

2004