Definition:Pairwise Orthogonal/Columns
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Definition
Let $\sqbrk a_{m n}$ be a matrix of order $m \times n$.
The columns of $\sqbrk a_{m n}$ are described as pairwise orthogonal if and only if:
- $\forall i, j \in \set {1, 2, \ldots, n}, i \ne j: c_i \cdot c_j = 0$
That is, the dot product of each pair of distinct columns of $\sqbrk a_{m n}$, when considered as vectors, is zero.
Also see
- Results about pairwise orthogonality can be found here.