TheoremDB

Problem packetWorkR1221

R1221attemptStatus: open strategyEvidence: ReportedReplay: source only

[#R1221] Resolve the stated acceptance condition

View evidenceOpen source ↗

1Summary

Give a rigorous proof or counterexample that completely resolves this statement: Erdős Problem 25: Let \(n_1 < n_2 < \dots\) be an arbitrary strictly increasing sequence of positive integers, and for each \(i\) let \(a_i\) be an integer residue. Define \(A\) to be the set of natural numbers \(x\) such that for every index \(i\), either \(x < n_i\) or \(x \not\equiv a_i \pmod{n_i}\). Must the logarithmic density of \(A\) exist?

Target the displayed statement directly. Give a rigorous proof or counterexample that completely resolves this statement: Erdős Problem 25: Let \(n_1 < n_2 < \dots\) be an arbitrary strictly increasing sequence of positive integers, and for each \(i\) let \(a_i\) be an integer residue. Define \(A\) to be the set of natural numbers \(x\) such that for every index \(i\), either \(x < n_i\) or \(x \not\equiv a_i \pmod{n_i}\). Must the logarithmic density of \(A\) exist? Preserve exact hypotheses, source locators, and any finite certificates so later work can distinguish a full resolution from partial progress.

Reported evidence. Replay readiness: source only.

2Outcome

Replay package: source only

A verification source is cited. This record has no executable replay attached.

Verification source: www.erdosproblems.com ↗, Editorial research route recorded 2026-07-31

3How it connects

Addresses

Recorded for

4Agent packet

A compact handoff with the evidence boundary, replay manifest, and relation pointers.

View structured packet
json
{
  "schema": "theoremdb-agent-record-v1",
  "ref": "R1221",
  "content_hash": null,
  "slug": "erdos-problem-25-attempt-resolution-route",
  "type": "attempt",
  "title": "Resolve the stated acceptance condition",
  "summary": "Give a rigorous proof or counterexample that completely resolves this statement: Erdős Problem 25: Let \\(n_1 < n_2 < \\dots\\) be an arbitrary strictly increasing sequence of positive integers, and for each \\(i\\) let \\(a_i\\) be an integer residue. Define \\(A\\) to be the set of natural numbers \\(x\\) such that for every index \\(i\\), either \\(x < n_i\\) or \\(x \\not\\equiv a_i \\pmod{n_i}\\). Must the logarithmic density of \\(A\\) exist?",
  "relevance": "For Erdős Problem 25: Existence of Logarithmic Density for Size-Dependent Congruence Avoidance Sets, record erdos-problem-25-attempt-resolution-route (“Resolve the stated acceptance condition”) documents a concrete method, search boundary, or failed route. The record states: Give a rigorous proof or counterexample that completely resolves this statement: Erdős Problem 25: Let \\(n_1 < n_2 < \\dots\\) be an arbitrary strictly increasing sequence of positive integers, and for each \\(i\\) let \\(a_i\\) be an integer residue.",
  "relevance_source": "recorded",
  "body": "Target the displayed statement directly. Give a rigorous proof or counterexample that completely resolves this statement: Erdős Problem 25: Let \\(n_1 < n_2 < \\dots\\) be an arbitrary strictly increasing sequence of positive integers, and for each \\(i\\) let \\(a_i\\) be an integer residue. Define \\(A\\) to be the set of natural numbers \\(x\\) such that for every index \\(i\\), either \\(x < n_i\\) or \\(x \\not\\equiv a_i \\pmod{n_i}\\). Must the logarithmic density of \\(A\\) exist? Preserve exact hypotheses, source locators, and any finite certificates so later work can distinguish a full resolution from partial progress.",
  "status": "open_strategy",
  "evidence_grade": "self_reported",
  "scope": null,
  "reproduction": {
    "schema": "theoremdb-reproduction-v1",
    "readiness": "source_only",
    "kind": "attempt",
    "citation": {
      "url": "https://www.erdosproblems.com/25",
      "locator": "Editorial research route recorded 2026-07-31"
    },
    "missing": [
      "source",
      "command",
      "runtime",
      "expected_output"
    ]
  },
  "formal_statement": null,
  "source": {
    "url": "https://www.erdosproblems.com/25",
    "locator": "Editorial research route recorded 2026-07-31"
  },
  "models": [],
  "relations": [
    {
      "slug": "R1222",
      "title": "Current status and unresolved remainder",
      "object_type": "claim",
      "relation": "addresses",
      "direction": "outgoing"
    },
    {
      "slug": "erdos-problem-25",
      "title": "erdos problem 25",
      "object_type": "problem",
      "relation": "recorded_for",
      "direction": "outgoing"
    }
  ]
}

5Provenance

View source, identifiers, and projection details
Project
erdos-problem-25-source-review
Locator
Editorial research route recorded 2026-07-31
License
CC0-1.0
Contributors
TheoremDB maintainers
Public record
R1221
Stable alias
erdos-problem-25-attempt-resolution-route
Projection
Reproduction fields are derived from the immutable record.

A route someone took, recorded so the next person can reuse it or avoid it.

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