Problem packetResearch packetR1250
Current status and unresolved remainder
Link to a section
The record cites sources for its explanation.
Recorded status: reported
Recorded scope: No scope is recorded.
Originating problem: The Erdős–Hajnal Conjecture on Polynomial Ramsey-Type Bounds
Authored record and scope
- Authored title
- Current status and unresolved remainder
- Record type
- claim
- Stored status
- reported
- Evidence grade
- sourced
2Authored explanation
OPEN as of 2026-07-31. The maintained Erdős Problems database at commit 8138974387d9030542daabe67faaa33eff9356f8 lists Problem 61 as open. The unresolved remainder is the full displayed statement.
A complete resolution must satisfy this condition: Give a rigorous proof or counterexample that completely resolves this statement: Erdős Problem 61: For a finite simple graph $H$, say that a simple graph $G$ is $H$\textit{-free} if $H$ does not appear as an induced subgraph of $G$. For a graph $G$, let $\alpha(G)$ denote the independence number of $G$ (the size of a largest independent set), and let $\omega(G)$ denote the clique number of $G$ (the size of a largest clique). For a function $f : \mathbb{N} \to \mathbb{R}$, say that $f$ is an \textit{Erdős–Hajnal lower bound} for $H$ if for all sufficiently large $n$, every $H$-free graph $G$ on $n$ vertices satisfies $\alpha(G) \geq f(n)$ or $\omega(G) \geq f(n)$. Does there exist, for every finite simple graph $H$, a constant $c > 0$ such that the function $n \mapsto n^{c}$ is an Erdős–Hajnal lower bound for $H$?
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Replay material: source only
3Evidence
A verification source is cited. This record has no executable replay attached.
Verification source: www.erdosproblems.com ↗, See dataset.references[0] for the exact external source and locator.
4How it connects
Addressed by
- attempt
Recorded for
- problem
Cite this record
Cite the original sources separately.
Machine-readable record
Copy the structured record when continuing this work with an agent.
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"title": "Current status and unresolved remainder",
"summary": "OPEN as of 2026-07-31. The maintained Erdős Problems database at commit 8138974387d9030542daabe67faaa33eff9356f8 lists Problem 61 as open. The unresolved remainder is the full displayed statement. Give a rigorous proof or counterexample that completely resolves this statement: Erdős Problem 61: For a finite simple graph $H$, say that a simple graph $G$ is $H$\\textit{-free} if $H$ does not appear as an induced subgraph of $G$. For a graph $G$, let $\\alpha(G)$ denote the independence number of $G$ (the size of a largest independent set), and let $\\omega(G)$ denote the clique number of $G$ (the size of a largest clique). For a function $f : \\mathbb{N} \\to \\mathbb{R}$, say that $f$ is an \\textit{Erdős–Hajnal lower bound} for $H$ if for all sufficiently large $n$, every $H$-free graph $G$ on $n$ vertices satisfies $\\alpha(G) \\geq f(n)$ or $\\omega(G) \\geq f(n)$. Does there exist, for every finite simple graph $H$, a constant $c > 0$ such that the function $n \\mapsto n^{c}$ is an Erdős–Hajnal lower bound for $H$?",
"relevance": "For erdos problem 61, pins the dated research frontier: OPEN as of 2026-07-31. The maintained Erdős Problems database at commit 8138974387d9030542daabe67faaa33eff9356f8 lists Problem 61 as open. The unresolved remainder is the full displayed statement. Give a rigorous proof or counterexample that completely resolves this statement: Erdős Problem 61: For.",
"relevance_source": "recorded",
"body": "OPEN as of 2026-07-31. The maintained Erdős Problems database at commit 8138974387d9030542daabe67faaa33eff9356f8 lists Problem 61 as open. The unresolved remainder is the full displayed statement.\n\nA complete resolution must satisfy this condition: Give a rigorous proof or counterexample that completely resolves this statement: Erdős Problem 61: For a finite simple graph $H$, say that a simple graph $G$ is $H$\\textit{-free} if $H$ does not appear as an induced subgraph of $G$. For a graph $G$, let $\\alpha(G)$ denote the independence number of $G$ (the size of a largest independent set), and let $\\omega(G)$ denote the clique number of $G$ (the size of a largest clique). For a function $f : \\mathbb{N} \\to \\mathbb{R}$, say that $f$ is an \\textit{Erdős–Hajnal lower bound} for $H$ if for all sufficiently large $n$, every $H$-free graph $G$ on $n$ vertices satisfies $\\alpha(G) \\geq f(n)$ or $\\omega(G) \\geq f(n)$. Does there exist, for every finite simple graph $H$, a constant $c > 0$ such that the function $n \\mapsto n^{c}$ is an Erdős–Hajnal lower bound for $H$?",
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"source": {
"url": "https://www.erdosproblems.com/61",
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"relations": [
{
"slug": "R1249",
"title": "Resolve the stated acceptance condition",
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{
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}6Provenance
View source, identifiers, and projection details
A statement this project treats as settled at the recorded evidence grade, with the work that backs it.