accumulation point
noun
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- (topology, "of" a subset of a topological space) Given a subset S of a topological space X, a point x whose every neighborhood contains at least one point distinct from x that belongs to S.
- (analysis, "of" a sequence) Given a sequence si, a point x whose every neighborhood contains at least one element of the sequence distinct from x.
- (systems theory, dynamical systems, chaos theory) For certain maps, a point beyond which periodic orbits give way to chaotic ones.
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punkt skupienia
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