The pp-adic section conjecture for curves

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Let k/Qpk/\mathbb Q_p be a finite extension, and let X/kX/k be a smooth, projective and geometrically connected curve of genus at least 22. A rational point a∈X(k)a\in X(k) determines a section sa:Gal⁡k→π1(X)s_a:\operatorname{Gal}_k\to\pi_1(X), and sections are considered up to conjugacy by π1(X‾)\pi_1(\overline{X}). The pp-adic section conjecture. The map

a⟼[sa]a\longmapsto [s_a]

is a bijection from X(k)X(k) onto the set of π1(X‾)\pi_1(\overline{X})-conjugacy classes of sections of π1(X/k)\pi_1(X/k). This is the local analogue of Grothendieck's section conjecture. The paper describes evidence for it, but the asserted bijectivity remains open.

References

Primary source

Florian Pop and Jakob Stix, “Arithmetic in the fundamental group of a p-adic curve: On the p-adic section conjecture for curves”, arXiv:1111.1354 (2011).

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Solutions 1

RemarkAI-assistedClaimed by OpenAI. The manuscript claims the local p-adic section conjecture for every finite extension of Q_p and every smooth proper geometrically connected curve of genus at least two: rational points correspond bijectively to continuous sections of the full arithmetic etale fundamental-group sequence, modulo conjugation by the full geometric fundamental group.See full solutionHide full solution

Claimed by OpenAI.

The manuscript claims the local p-adic section conjecture for every finite extension of Q_p and every smooth proper geometrically connected curve of genus at least two: rational points correspond bijectively to continuous sections of the full arithmetic etale fundamental-group sequence, modulo conjugation by the full geometric fundamental group.

GitHub repository: https://github.com/openai/math

Manuscript: https://github.com/openai/math/blob/adc7f1241b42e322a6451854ab7e4b4c146bf78a/preprints/The-p-adic-section-conjecture-September-24-2026/main.pdf

  • OpenAI-019-02-The-p-adic-section-conjecture.pdf496,176 bytesOpen