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wiki/concepts/Fixed-Point.md
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title: "Fixed Point"
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type: concept
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tags: []
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---
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## Definition
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不动点,记作 G*,满足 Φ(G*) = G*,即自映射 Φ 的不动点。在递归自优化系统中表示稳定的生成能力。
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## Context
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当生成器 G 是不动点时,它在自身的"生成-优化-更新"循环下保持不变。其输出已经编码了自我改进所需的标准。系统目标就是收敛到这个稳定状态。
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## Mathematical Expression
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```
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G* = lim(n→∞) Φ^n(G_0)
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```
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当 Φ 满足适当的连续性或收缩性条件时,可以通过迭代应用获得不动点。
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## Related Concepts
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- [[Self-Map]]
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- [[Generator Space]]
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- [[Y Combinator]]
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- [[Recursive Self-Optimizing Generative Systems]]
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