SWhat changed
Characterized finite planar graphs by absence of K5 and K3,3 subdivisions.
Scientific scope
The record is Kuratowski's sole-author 1930 Fundamenta Mathematicae paper. It does not absorb Wagner's minor theorem, later algorithms, infinite-graph extensions or Kuratowski's earlier closure axioms.
Evidence
The linked sources identify this contribution and its scope. WRS has not independently reconstructed the scientific claims. The record is Kuratowski's sole-author 1930 Fundamenta Mathematicae paper. It does not absorb Wagner's minor theorem, later algorithms, infinite-graph extensions or Kuratowski's earlier closure axioms.
Contributors
- Casimir Kuratowski · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.
Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.
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