The polynomials in the diagonal of the Smith normal form or rational canonical form of a matrix are called its invariant factors.

# Invariant Factor

## See also

Rational Canonical Form, Smith Normal Form## Explore with Wolfram|Alpha

## References

Ayres, F. Jr. "Smith Normal Form." Ch. 24 in*Schaum's Outline of Theory and Problems of Matrices.*New York: Schaum, pp. 188-195, 1962.Dummit, D. S. and Foote, R. M.

*Abstract Algebra, 2nd ed.*Englewood Cliffs, NJ: Prentice-Hall, 1998.

## Referenced on Wolfram|Alpha

Invariant Factor## Cite this as:

Weisstein, Eric W. "Invariant Factor."
From *MathWorld*--A Wolfram Web Resource. https://mathworld.wolfram.com/InvariantFactor.html