A square matrix $A$ is unipotent if $A-I$, where $I$ is an identity matrix, is nilpotent.
Questions tagged [unipotent-matrices]
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Unipotent matrix similar to an upper-triangular matrix
"Any unipotent matrix is similar to an upper-triangular matrix with 1's on the diagonal"...
This is usually alleged, but I have no idea how to demonstrate that, starting with the definition : $A$ is unipotent if and only if there is $k\in…
Andrew
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