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Cantor: an elementary question of manifold theory

Contribution grade

Logic, foundations and set theory · THEOREM

Reference score250,000Provisional editorial estimate of this exact contribution; its grade is assessed separately.

What changed

Gave diagonal nonenumerability argument for infinite binary sequences.

Scientific scope

The record is Cantor's sole-author 1891 paper and its diagonal construction. It is distinct from his 1874 uncountability proof and does not absorb later formalizations of Cantor's theorem or computability applications.

Evidence

The linked sources identify this contribution and its scope. WRS has not independently reconstructed the scientific claims. The record is Cantor's sole-author 1891 paper and its diagonal construction. It is distinct from his 1874 uncountability proof and does not absorb later formalizations of Cantor's theorem or computability applications.

Contributors

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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