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concepts/paley-graph.md
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title: "Paley Graph"
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created: 2026-05-11
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updated: 2026-05-11
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type: concept
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tags: [graph-theory, algebraic-construction, placeholder]
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sources: [[ramsey-numbers-survey]]
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---
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# Paley Graph
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## 定义
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Paley 图 P_q 是基于有限域 GF(q)(q ≡ 1 mod 4)的代数构造图。顶点为 GF(q) 的元素,两顶点相邻当且仅当其差为二次剩余。
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> 此页面为占位符。
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## 在 Ramsey 理论中的角色
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P₁₇ 提供了 R(4,4) ≥ 17 的下界构造。Paley 图具有高度对称性和准随机性,在拉姆齐问题中表现优异。
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## 相关概念
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- [[ramsey-numbers|拉姆齐数]]
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- [[diagonal-ramsey-number|对角拉姆齐数]]
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