Identity matrix

Linear Algebra and the C Language · Wikibooks

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    From Wikibooks, under CC BY-SA 4.0, as the source states it. This page at Wikibooks.


    Identity matrix:

    The identity matrix of size n is the n x n square matrix with ones on the main diagonal and zeros elsewhere.... W: Identity matrix


    Elementary rows operations with the identity matrix:

    • c00a.c ... Swap two rows
    • c00b.c ... Zero under the pivot "C1"
    • c00c.c ... Zero under the pivot "C2"
    • c00d.c ... The pivot at one
    • c00e.c ... Put zero above the pivot


    Elementary columns operations with the identity matrix:

    • c00a.c ... Swap two columns
    • c00b.c ... Zero on the right of the pivot"
    • c00c.c ... The pivot at one:"
    • c00d.c ... Put zero on the left of the pivot