Talk:Duplication and elimination matrices

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Uniqueness of elimination matrix

The elimination matrix is not unique. A general parameterization of the 2x2 elimination matrix is given by ${\begin{bmatrix}1&0&0&0\\0&1-t&t&0\\0&0&0&1\end{bmatrix}}$ where t is any scalar. A reasonable choice is, for instance, t = 1/2. — Preceding unsigned comment added by Offsure (talk • contribs) 11:49, 1 December 2016 (UTC)[reply]