matrix diagonal造句

This formalism includes pressure terms associated with forces that act normal to the cross-sectional area ( the matrix diagonals of the tensor ) as well as compressions.
The most useful thing to know about symmetric real matrices is the spectral theorem, which says that you can always make the matrix diagonal by some orthonormal change of basis variables.
A special case of generalized least squares called "'weighted least squares "'occurs when all the off-diagonal entries of " ? " ( the correlation matrix of the residuals ) are null; the variances of the observations ( along the covariance matrix diagonal ) may still be unequal ( heteroscedasticity ).
For any index i for which \ alpha _ i \ nmid \ alpha _ { i + 1 }, one can repair this shortcoming by operations on rows and columns i and i + 1 only : first add column i + 1 to column i to get an entry \ alpha _ { i + 1 } in column " i " without disturbing the entry \ alpha _ i at position ( i, i ), and then apply a row operation to make the entry at position ( i, i ) equal to \ beta = \ gcd ( \ alpha _ i, \ alpha _ { i + 1 } ) as in Step II; finally proceed as in Step III to make the matrix diagonal again.
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