# principal diagonal

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## principal diagonal

n.
The diagonal in a square matrix that goes from the upper left corner to the lower right corner.
ThesaurusAntonymsRelated WordsSynonymsLegend:
 Noun 1 principal diagonal - the diagonal of a square matrix running from the upper left entry to the lower right entrymain diagonaldiagonal - an oblique line of squares of the same color on a checkerboard; "the bishop moves on the diagonals"
References in periodicals archive ?
After a careful calculation, we find that the elements in the principal diagonal and the [mathematical expression not reproducible] with the relationship m + 1 = n are nonzero value, and the other elements are zero.
Table 2 Fisher's LSD comparison of the differences in performance of undergraduates based on their selection criteria Selection criteria 1 2 3 Merit 3.32 (a) 0.91 (b) 1.37 Locality 5.35 * (c) 2.41 0.46 ELDS 7.25 * 2.49 1.95 MSW = 1.071 (a) Group means are along the principal diagonal. (b) Differences among group means are above the principal diagonal.
These eigen values are ordered in descending sequence along the principal diagonal of the matrix [A.sub.n * n], [V.sup.t.sub.n * p] is the corresponding transpose matrix.

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