Home Problems Cycle double cover conjecture Research history Selected research history · publication v1
Cycle double cover conjecture Follow the ideas, results and limitations over time. This is a selected history, not a complete literature survey or a measure of how close the problem is to being solved.
Current state & remaining question → Viewing the timeline from pinned publication v1.
4 selected milestones · Source coverage checked 2026-10-13 · Historical annotation and mathematical review remain separate.
Jul 2026 preprint
Proposal
A separately authored proof report Shiva Kintali reports a different proof manuscript with Codex assistance.
Scope & review: A second proposal does not by itself settle either argument’s correctness.
Statements & sources Historical annotation review: pending. The date refers to the preprint, with the precision supported by the source.
Jul 9, 2026 formalization
Formalization
A public full-scope Lean endpoint The OpenAI project reports a formalized flow-to-cover construction ending in the universal statement.
Scope & review: No local OpenMath proof build or independent correspondence review is recorded.
Statements & sources Historical annotation review: pending. The date refers to the formalization, with the precision supported by the source.
Jul 10, 2026 announcement
Proposal
An AI-assisted proof is announced OpenAI reports a full proof and provides a manuscript and formal source.
Scope & review: First-party completion claims remain under assessment here.
Statements & sources Historical annotation review: pending. The date refers to the announcement, with the precision supported by the source.
Date unavailable publication
Foundation
The classical cycle double cover question The question asks for edge multiplicity two, not a vertex cover or a partition into disjoint cycles.
Scope & review: The bridgeless and loopless hypotheses are part of the selected formulation.
Statements & sources Historical annotation review: pending. The date refers to the publication, with the precision supported by the source.
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