2012.77: Triangularization of matrix polynomials

2012.77: Leo Taslaman, Francoise Tisseur and Ion Zaballa (2012) Triangularization of matrix polynomials.

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Abstract

For an algebraically closed field $\F$, we show that any matrix polynomial $P(\l)=\sum_{j=0}^\ell \l^jA_j$ with $A_j\in\F^{\nbym}$, $n\le m$, can be reduced over $\F[\l]$ to an $\nbym$ upper triangular matrix polynomial of grade $\ell$ preserving the finite and infinite elementary divisors. We also characterize the real matrix polynomials that are triangularizable over the real numbers and show that those that are not triangularizable are quasi-triangularizable with diagonal blocks of sizes $1\times 1$ and $2\times 2$.

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• Triangularizing matrix polynomials (deposited 02 November 2012)
  • Triangularization of matrix polynomials (deposited 09 August 2012) [Currently Displayed]

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