A fixed point for which the stability matrix has one zero eigenvector with negative eigenvalue 
.
Stable Star
See also
Elliptic Fixed Point, Fixed Point, Hyperbolic Fixed Point, Stable Improper Node, 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 StarCite this as:
Weisstein, Eric W. "Stable Star." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/StableStar.html