A fixed point for which the stability matrix has equal negative eigenvalues.
Stable Improper Node
See also
Elliptic Fixed Point, Fixed Point, Hyperbolic Fixed Point, Stable Node, Stable Spiral Point, Unstable Improper Node, Unstable Node, Unstable Spiral Point, Unstable StarExplore with Wolfram|Alpha
References
Tabor, M. "Classification of Fixed Points." §1.4.b in Chaos and Integrability in Nonlinear Dynamics: An Introduction. New York: Wiley, pp. 22-25, 1989.Referenced on Wolfram|Alpha
Stable Improper NodeCite this as:
Weisstein, Eric W. "Stable Improper Node." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/StableImproperNode.html