English

On the period-index problem in light of the section conjecture

Algebraic Geometry 2008-02-29 v1 Number Theory

Abstract

Period and index of a curve X/KX/K over a pp-adic local field KK such that the fundamental group π1(X/K)\pi_1(X/K) admits a splitting are shown to be powers of pp. As a consequence, examples of curves over number fields are constructed where having sections is obstructed locally at a pp-adic place. Hence the section conjecture holds for these curves as there are neither sections nor rational points.

Keywords

Cite

@article{arxiv.0802.4125,
  title  = {On the period-index problem in light of the section conjecture},
  author = {Jakob Stix},
  journal= {arXiv preprint arXiv:0802.4125},
  year   = {2008}
}

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17 pages