noun
elementary matrix
A matrix that differs from the identity matrix by a single elementary row operation. Used in linear algebra.
基本行列を左から掛けると、行基本変形ができる。
Multiplying by an elementary matrix on the left performs an elementary row operation.
任意の正則行列は基本行列の積で表せる。
Any invertible matrix can be expressed as a product of elementary matrices.