identity matrix

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i·den·ti·ty ma·trix

a square matrix in which the quantities on the diagnonal from top left to bottom right are all equal to 1 and all the other entries are 0.
References in periodicals archive ?
3)] is the 3x3 unit matrix and [PSI] is a 3-component column wavefunction.
3] = k to represent 2 x 2 quaternion unit matrix, for instance.
In other words, any m x n matrix can be deducted into a equivalence matrix which including a r x r unit matrix by a finite series row elementary transformation.
column vector b is non-negative), till to perform B as the form including a unit matrix as its sub-matrix.
Nobody was injured in the attacks, but Merseyside's Police's anti-gun crime unit Matrix have moved in to investigate the crimes and find those responsible.
An area around Maureen Walk was sealed off as detectives from anti-gun unit Matrix looked for clues.
An area around Maureen Walk was sealed off this morning as detectives from anti-gun unit Matrix looked for clues.
DCI Steve Moore, head of gun crime unit Matrix, said: "I am impressed with the good, strong deterrent sentence given out today.