In mathematics, a unimodular polynomial matrix is a square polynomial matrix whose inverse exists and is itself a polynomial matrix. Equivalently, a polynomial matrix A is unimodular if its determinant det(A) is a nonzero constant.

This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. (May 2024)

• Antsaklis, Panos J.; Michel, Anthony N. (2006), A Linear Systems Primer, p. 273, ISBN 978-0-8176-4460-4
• Horn, Roger A.; Johnson, Charles R. (1985), Matrix Analysis, Cambridge University Press, p. 14, ISBN 978-0-521-38632-6.

• Polynomial matrix glossary at Polyx (A matlab toolbox)

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