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Reverted edits by FFaGGGGoTT (Talk) to last version by Foxtrot
The '''characteristic polynomial''' of a square [[matrix]] <math>A</math> is given by,
:<math>f(\lambda) = \det(A-\lambda I)</math>
where <math>I</math> is the [[identity matrix]]. The [[root]]s of this [[polynomial]] are the [[eigenvalue]]s of the matrix.
[[Category:Linear algebra]]