Signature Matrix

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Geliefert zwischen Do., 22.01.2026 und Fr., 23.01.2026

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High Quality Content by WIKIPEDIA articles! In mathematics, a signature matrix is a diagonal matrix whose diagonal elements are plus or minus 1, that is, any matrix of the form: A=begin{pmatrix} pm 1 & 0 & cdots & 0 & 0 0 & pm 1 & cdots & 0 & 0 vdots & vdots & ddots & vdots & vdots 0 & 0 & cdots & pm 1 & 0 0 & 0 & cdots & 0 & pm 1 end{pmatrix} Any such matrix is its own inverse, hence is an involutary matrix. It is consequently a square root of the identity matrix. Note however that not all square roots of the identity are signature matrices. Noting that signature matrices are both symmetric and involutary, they are thus orthogonal. Consequently, any linear transformation corresponding to a signature matrix constitutes an isometry. Geometrically, signature matrices represent a reflection in each of the axes corresponding to the negated rows or columns.

Weitere Informationen

  • Allgemeine Informationen
    • GTIN 09786131195822
    • Editor Lambert M. Surhone, Miriam T. Timpledon, Susan F. Marseken
    • EAN 9786131195822
    • Format Fachbuch
    • Titel Signature Matrix
    • Herausgeber Betascript Publishing
    • Anzahl Seiten 96
    • Genre Mathematik

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