On a problem of N. Thome and Y. Wei (Q2485624)
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| Language | Label | Description | Also known as |
|---|---|---|---|
| English | On a problem of N. Thome and Y. Wei |
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On a problem of N. Thome and Y. Wei (English)
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5 August 2005
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The author characterizes the matrices \(A\) (of index \(k\)), \(B\) and \(C\) such that the block-rank equation \[ \text{rank}\left[\begin{matrix} A & B \\ C & X\end{matrix}\right] =\text{rank} (A) \] has the solution \(X=A^d\), where \(A^d\) denotes the Drazin inverse of \(A\).
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rank equation
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Drazin inverse
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