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：2025/12/05
elementary matrix
（ plural ）
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(linear algebra) A square matrix which is obtained from the identity matrix by a single elementary row (or column) operation.
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elementary matrix
During the row reduction, he premultiplied the matrix by an elementary matrix to swap the first and second rows.
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During the row reduction, he premultiplied the matrix by an elementary matrix to swap the first and second rows.
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