I want to construct a matrix A such that:
$ \begin{pmatrix} 0 & B\\ C & D\\ \end{pmatrix} * A = \begin{pmatrix} * & *\\ 0 & *\\ \end{pmatrix} $
where B, C, D $\in K^{n\times n}$.
2026-04-07 09:48:25.1775555305
Construct upper block diagonal matrix from block matrix
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