A note on the vec operator applied to unbalanced block-structured matrices (Q670239)
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scientific article; zbMATH DE number 7037276
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | A note on the vec operator applied to unbalanced block-structured matrices |
scientific article; zbMATH DE number 7037276 |
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A note on the vec operator applied to unbalanced block-structured matrices (English)
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18 March 2019
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Summary: The vec operator transforms a matrix to a column vector by stacking each column on top of the next. It is useful to write the vec of a block-structured matrix in terms of the vec operator applied to each of its component blocks. We derive a simple formula for doing so, which applies regardless of whether the blocks are of the same or of different sizes.
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