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===Finite number of points===

===Finite number of points有限点数===

In a discrete-time system, an attractor can take the form of a finite number of points that are visited in sequence. Each of these points is called a periodic point. This is illustrated by the logistic map, which depending on its specific parameter value can have an attractor consisting of 2ⁿ points, 3×2ⁿ points, etc., for any value of n.

In a discrete-time system, an attractor can take the form of a finite number of points that are visited in sequence. Each of these points is called a periodic point. This is illustrated by the logistic map, which depending on its specific parameter value can have an attractor consisting of 2ⁿ points, 3×2ⁿ points, etc., for any value of n.

在一个离散时间系统中，一个吸引子可以采取有限数目的点的形式，这些点按顺序访问。这些点中的每一个都称为周期点。这可以用 logistic 映射来说明，对于 n 的任意值，根据其特定的参数值，可以有一个由2个 < sup > n </sup > 点、3 × 2 < sup > n </sup > 点等组成的吸引子。

在一个[[离散和连续时间|离散时间]]系统中，<font color="#ff8000"> 吸引子</font>可以以有限数量的点的形式依次访问。每个点都称为[[周期点]]。[[逻辑图]]说明了这一点，根据其特定参数值，对于任何“n”值，可以有由2^''n''点、3×2^''n''点等组成的<font color="#ff8000"> 吸引子</font>。

 

 

=== Limit cycle ===

=== Limit cycle ===