Displays the [url=http://en.wikipedia.org/wiki/Gershgorin_circle_theorem]Gershgorin circles[/url] for a square matrix. According to the Gershgorin circle theorem every eigenvalue of the Matrix [math]A[/math] lies in at least one Gershgorin circle. The Gershgorin circle for both the matrix (blue) and its transpose (red) are displayed. Just real-valued matrices are supported in this worksheet (bug in GeoGebra).
