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(linear algebra) positive-definite matrix
A positive-definite matrix is an important concept in linear algebra.
(linear algebra) positive-semidefinite matrix
A positive-semidefinite matrix is one of the important concepts in linear algebra.
(linear algebra) triangular matrix
In linear algebra, triangular matrices play a very important role.
(linear algebra) skew-symmetric matrix
A skew-symmetric matrix has the characteristic that its transpose matrix is the inverse of the original matrix.
(linear algebra) transposed matrix
The calculation of this transposed matrix is a bit complicated.
(linear algebra) square matrix
This square matrix has the same number of rows and columns.
(linear algebra) diagonal matrix
A diagonal matrix is a matrix in which all elements outside the main diagonal are zero.
(linear algebra) lower triangular matrix
A lower triangular matrix is a matrix where all the elements below the main diagonal are zero.
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(euphemistic) the world's oldest profession
She is conducting research on the world's oldest profession.
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