Superdiagonal
The superdiagonal of a square matrix is the set of elements directly above the elements comprising the diagonal. For example, in the following matrix, the diagonal elements are denoted d_i and the superdiagonal elements are denoted s_i,
![画像: [d_1 s_1 a_(13) ... a_(1n); a_(21) d_2 s_2 ... a_(2n); a_(31) a_(32) d_3 ... a_(3n); | ... ... ... ...; a_(n1) a_(n2) a_(n3) ... d_n].](/index.cgi/contrast/https://mathworld.wolfram.com/images/equations/Superdiagonal/NumberedEquation1.svg){kind=link}
See also
Diagonal, Subdiagonal, Tridiagonal MatrixExplore with Wolfram|Alpha
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Cite this as:
Weisstein, Eric W. "Superdiagonal." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/Superdiagonal.html