A point x^* which is mapped to itself under a map G, so that x^* = G(x^*). Such points are sometimes also called invariant points or fixed elements. Stable fixed points are called elliptical. Unstable fixed points, corresponding to an intersection of a stable and unstable invariant manifold, are called hyperbolic (or saddle). Points may also be called asymptotically stable (a.k.a. superstable).
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Jonathan is doing really well in all of his classes this semester, 5 A’s & 2 B’s (he has a computer essentials class instead of PLC). In his Algebra class that Nathan is helping him with he has an A+.
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