The Papamanthou-Tollis Conjecture on Parameterized st-Orientations

Registry resolution: resolved. Reported result type: disproved. The registry record and named primary source provide the statement and scope.

Exact FrontierDelta

disproved→disproved

Scope and record

Occurred: Oct 29, 2026

Delta type: REGISTRY REVISION

Assumptions: VibeMathed verification: site-confirmed. Publication: preprint. AI contribution: ai-co-developed. VibeMathed editorial classifications, scores, notes, relations, and dataset structure are CC BY 4.0. Source statements and linked content retain their own rights.

Canonical aliases: The Papamanthou-Tollis Conjecture on Parameterized st-Orientations · st-orientations

Confidence: Not scored

Registry verification: site confirmed · preprint · resolved

Open the source record ↗

Attribution

VibeMathed
registry · event recorded by

Claude Sonnet 4.6
model · ai model contributor · Anthropic

Charalampos Papamanthou
human · human collaborator

Evidence vector

SourceReplayReproducedFormal proofStatement auditExternal checkExpert reviewPeer review

Named evidence

VibeMathed record: The Papamanthou-Tollis Conjecture on Parameterized st-Orientations

specialist registry · passed

The refutation is an explicit graph, so it reduces to running the two named algorithms on it, and that part stands on its own. The surrounding computational claims deserve less weight: in the same section the authors record that the model produced counterexamples later confirmed wrong, and that they did not verify its claim to have exhaustively searched the biconnected graphs on five and six vertices. arXiv note, not peer-reviewed.

Source ↗

The Papamanthou-Tollis Conjecture on Parameterized st-Orientations

preprint · pending

Primary source named by the VibeMathed record. Presence in this import is not an independent mathematical verification.

Source ↗

Lineage and corrections

Corrects The Papamanthou-Tollis Conjecture on Parameterized st-Orientations →

Supersedes The Papamanthou-Tollis Conjecture on Parameterized st-Orientations →

The Papamanthou-Tollis Conjecture on Parameterized st-Orientations evidence for this event

This event attributed to Charalampos Papamanthou

This event attributed to Claude Sonnet 4.6

VibeMathed record: The Papamanthou-Tollis Conjecture on Parameterized st-Orientations evidence for this event

The Papamanthou-Tollis Conjecture on Parameterized st-Orientations parent of this event

Registry resolution: resolved. Reported result type: disproved. The registry record and named primary source provide the statement and scope. parent of this event

Act on this frontier

Verify, challenge, or extend the result.

Help verify Open canonical problem Explore evidence graph