Source authenticated

Explicit Presentation of the 2-adic Absolute Galois Group

Give an explicit profinite presentation of $\operatorname{Gal}(\overline{\mathbb{Q}}_2 / \mathbb{Q}_2)$. The tame local cases were settled by the early 1980s; the dyadic case was the last one missing. The new presentation has four generators, two word relations and a pro-$2$ condition on the wild generators.

Exact FrontierDelta

Prior state unknownproved

Scope and record

Occurred: Jul 26, 2026

Delta type: SOURCE CLAIM

Assumptions: VibeMathed verification: lean-verified. Publication: announcement. AI contribution: ai-discovered. Imported under CC BY 4.0.

Canonical aliases: Explicit Presentation of the 2-adic Absolute Galois Group · Galois group of Q2

Confidence: Not scored

Registry verification: lean verified · announcement · resolved

Open the source record ↗

Attribution

VibeMathed
registry · event recorded by

Claude Fable 5
model · ai model contributor · OpenAI / Anthropic

David Roe
human · human collaborator

David Turturean
human · human collaborator

Claude Opus 4.8
model · ai model contributor · OpenAI / Anthropic

ChatGPT-5.5 Pro (GPT-5.6 A/B)
model · ai model contributor · OpenAI / Anthropic

Artifacts and verifiers

Finite-quotient verifier (5,402 test groups)

code · pending

Artifact ↗

Compute record

No linked compute attempts recorded.

Lineage and corrections

This event attributed to David Roe

This event attributed to David Turturean

This event attributed to ChatGPT-5.5 Pro (GPT-5.6 A/B)

This event attributed to Claude Fable 5

This event attributed to Claude Opus 4.8

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