TheoremDB

Problem packetResearch packetR1593

R1593Sourced evidence

Dated status and exact unresolved remainder

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Authored summary

Unresolved in this packet after the dated source check. Strongest checked result: Clay Mathematics Institute continues to list the rational Hodge conjecture as unsolved and notes known special cases, including varieties of complex dimension below four. Exact unresolved remainder: Prove the rational cycle-class assertion for every smooth projective complex variety and codimension, or give a rigorously verified rational Hodge class outside the rational span of algebraic cycle classes.

The record cites sources for its explanation.

Recorded status: reported

Recorded scope: No scope is recorded.

Originating problem: Hodge conjecture

Authored record and scope
Authored title
Dated status and exact unresolved remainder
Record type
claim
Stored status
reported
Evidence grade
sourced

2Authored explanation

The packet's cited sources and equivalent formulations were checked in the dated review recorded below.

Strongest checked result: Clay Mathematics Institute continues to list the rational Hodge conjecture as unsolved and notes known special cases, including varieties of complex dimension below four.

Exact unresolved remainder: Prove the rational cycle-class assertion for every smooth projective complex variety and codimension, or give a rigorously verified rational Hodge class outside the rational span of algebraic cycle classes.

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Replay material: source only

3Evidence

Replay package: source only

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

Verification source: www.claymath.org ↗, official problem description, known special cases, and unsolved classification

4What was measured

5How it connects

Replaces

Recorded for

Machine-readable record

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  "ref": "R1593",
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  "slug": "hodge-conjecture-status-packet-quality-20260801",
  "type": "claim",
  "title": "Dated status and exact unresolved remainder",
  "summary": "Unresolved in this packet after the dated source check. Strongest checked result: Clay Mathematics Institute continues to list the rational Hodge conjecture as unsolved and notes known special cases, including varieties of complex dimension below four. Exact unresolved remainder: Prove the rational cycle-class assertion for every smooth projective complex variety and codimension, or give a rigorously verified rational Hodge class outside the rational span of algebraic cycle classes.",
  "relevance": "For Hodge conjecture, this successor gives readable dated status prose and the exact remaining research boundary.",
  "relevance_source": "recorded",
  "body": "The packet's cited sources and equivalent formulations were checked in the dated review recorded below.\n\nStrongest checked result: Clay Mathematics Institute continues to list the rational Hodge conjecture as unsolved and notes known special cases, including varieties of complex dimension below four.\n\nExact unresolved remainder: Prove the rational cycle-class assertion for every smooth projective complex variety and codimension, or give a rigorously verified rational Hodge class outside the rational span of algebraic cycle classes.",
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  "evidence_grade": "sourced",
  "scope": null,
  "reproduction": {
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    "readiness": "source_only",
    "kind": "claim",
    "citation": {
      "url": "https://www.claymath.org/millennium/hodge-conjecture/",
      "locator": "official problem description, known special cases, and unsolved classification"
    },
    "missing": [
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  "formal_statement": null,
  "source": {
    "url": "https://www.claymath.org/millennium/hodge-conjecture/",
    "locator": "official problem description, known special cases, and unsolved classification"
  },
  "models": [],
  "relations": [
    {
      "slug": "R1082",
      "title": "Current status and unresolved remainder",
      "object_type": "claim",
      "relation": "supersedes",
      "direction": "outgoing",
      "metadata": {
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7Provenance

View source, identifiers, and projection details

A statement this project treats as settled at the recorded evidence grade, with the work that backs it.

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