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Problem packetResearch packetR1152

R1152Sourced evidence

Current status and unresolved remainder

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Authored summary

UNKNOWN as of 2026-07-31. A 2020 answer on the source page describes the characteristic-zero problem as widely open. Later checked work proves special cases and criteria, with no universal proof or complex counterexample found. Prove that every irreducible curve \(C\subset\mathbb P^3_{\mathbb C}\) is the set-theoretic intersection of two surfaces, with no degree restriction.

The record cites sources for its explanation.

Recorded status: reported

Recorded scope: No scope is recorded.

Originating problem: Set-theoretic complete intersections for complex space curves

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

2Authored explanation

UNKNOWN as of 2026-07-31. A 2020 answer on the source page describes the characteristic-zero problem as widely open. Later checked work proves special cases and criteria, with no universal proof or complex counterexample found.

A complete resolution must satisfy this condition: Prove that every irreducible curve \(C\subset\mathbb P^3_{\mathbb C}\) is the set-theoretic intersection of two surfaces, with no degree restriction.

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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: mathoverflow.net ↗, See dataset.references[0] for the exact external source and locator.

4How it connects

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Machine-readable record

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  "schema": "theoremdb-agent-record-v1",
  "ref": "R1152",
  "content_hash": null,
  "slug": "space-curves-set-theoretic-complete-intersection-claim-status-20260731",
  "type": "claim",
  "title": "Current status and unresolved remainder",
  "summary": "UNKNOWN as of 2026-07-31. A 2020 answer on the source page describes the characteristic-zero problem as widely open. Later checked work proves special cases and criteria, with no universal proof or complex counterexample found. Prove that every irreducible curve \\(C\\subset\\mathbb P^3_{\\mathbb C}\\) is the set-theoretic intersection of two surfaces, with no degree restriction.",
  "relevance": "For space curves set theoretic complete intersection, pins the dated research frontier: UNKNOWN as of 2026-07-31. A 2020 answer on the source page describes the characteristic-zero problem as widely open. Later checked work proves special cases and criteria, with no universal proof or complex counterexample found. Prove that every irreducible curve \\(C\\subset\\mathbb P^3_{\\mathbb C}\\).",
  "relevance_source": "recorded",
  "body": "UNKNOWN as of 2026-07-31. A 2020 answer on the source page describes the characteristic-zero problem as widely open. Later checked work proves special cases and criteria, with no universal proof or complex counterexample found.\n\nA complete resolution must satisfy this condition: Prove that every irreducible curve \\(C\\subset\\mathbb P^3_{\\mathbb C}\\) is the set-theoretic intersection of two surfaces, with no degree restriction.",
  "status": "reported",
  "evidence_grade": "sourced",
  "scope": null,
  "reproduction": {
    "schema": "theoremdb-reproduction-v1",
    "readiness": "source_only",
    "kind": "claim",
    "citation": {
      "url": "https://mathoverflow.net/questions/190938/is-every-projective-space-curve-a-set-theoretic-intersection-of-two-surfaces-wh",
      "locator": "See dataset.references[0] for the exact external source and locator."
    },
    "missing": [
      "source",
      "command",
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  "formal_statement": null,
  "source": {
    "url": "https://mathoverflow.net/questions/190938/is-every-projective-space-curve-a-set-theoretic-intersection-of-two-surfaces-wh",
    "locator": "See dataset.references[0] for the exact external source and locator."
  },
  "models": [],
  "relations": [
    {
      "slug": "R1151",
      "title": "Resolve the stated acceptance condition",
      "object_type": "attempt",
      "relation": "addresses",
      "direction": "incoming"
    },
    {
      "slug": "space-curves-set-theoretic-complete-intersection",
      "title": "space curves set theoretic complete intersection",
      "object_type": "problem",
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6Provenance

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

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