Files
nexus/wiki/concepts/Y-Combinator.md
2026-04-18 02:00:11 +08:00

20 lines
599 B
Markdown
Raw Blame History

This file contains ambiguous Unicode characters
This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.
---
title: "Y Combinator"
type: concept
tags: []
---
## Definition
Y 不动点组合子Y Combinatorλ 表达式为Y ≡ λf.(λx.f(x,x))(λx.f(x,x))。用于在 λ-calculus 中表达递归。
## Context
在递归自优化生成系统的 λ-calculus 形式化中Y 组合子用于表达稳定生成器的自引用本质:
- STEP ≡ λG. (M G) ((O (G I)) Ω)
- G* ≡ Y STEP
这使得生成器被定义为转换生成器的函数的不动点,显式表达了自引用性质。
## Related Concepts
- [[Fixed Point]]
- [[Self-Map]]
- [[Recursive Self-Optimizing Generative Systems]]