identity matrix

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identity matrix

[ī′den·ə‚dē ‚mā·triks]
(mathematics)
The square matrix all of whose entries are zero except along the principal diagonal where they all are 1.
References in periodicals archive ?
In this paper, we also focus on the specific scenario of (1), where both A and B are not identity matrices. We propose a new first-order primal-dual algorithm for (1).
In general, [LAMBDA] has the same structure as A in Equation 1 except that the first column in each of the identity matrices in (1) is deleted; that is, [I.sub.f] is replaced by [[0.sub.f-1] [I.sub.f-1]].
However, there exist three degenerate compatibility forms when some of the factors are identity matrices and not all of the factors have functional entries.
The weighting matrices Q and R in (4) are chosen to be identity matrices in this example.
This can be achieved by starting with identity matrices for A and B.