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A pathological case of the C1 conjecture in mixed characteristic

Published online by Cambridge University Press:  05 April 2018

INDER KAUR*
Affiliation:
Instituto Nacional de Matemática Pura e Aplicada, Estr. Dona Castorina, 110 - Jardim Botânico, Rio de Janeiro - RJ, 22460-320, Brazil. e-mail: [email protected]

Abstract

Let K be a field of characteristic 0. Fix integers r, d coprime with r ⩾ 2. Let XK be a smooth, projective, geometrically connected curve of genus g ⩾ 2 defined over K. Assume there exists a line bundle ${\cal L}_K$ on XK of degree d. In this paper we prove the existence of a stable locally free sheaf on XK with rank r and determinant ${\cal L}_K$. This trivially proves the C1 conjecture in mixed characteristic for the moduli space of stable locally free sheaves of fixed rank and determinant over a smooth, projective curve.

Type
Research Article
Copyright
Copyright © Cambridge Philosophical Society 2018 

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References

REFERENCES

[1] Bhosle, U. and Biswas, I.. Stable real algebraic vector bundles over a Klein bottle. Trans. Amer. Math. Soc. 360 (9) (2008), 45694595.Google Scholar
[2] Colliot-Thélene, J. L. Variétés presque rationnelles, leurs points rationnels et leurs dégénére-scences. In Arithmetic Geometry (Springer, 2010), pages 144.Google Scholar
[3] Kaur, I. Smoothness of moduli space of stable torsionfree sheaves with fixed determinant in mixed characteristic. In Analytic and Algebraic Geometry (Springer, 2017), pages 173186.Google Scholar
[4] Lang, S. On quasi algebraic closure. Annals of Math. 55 (1952), 373390.Google Scholar
[5] Langer, A. Semistable sheaves in positive characteristic. Annals of Math. 159 (2004), 251276.10.4007/annals.2004.159.251Google Scholar
[6] Le Potier, J. Lectures on Vector Bundles, volume 54 (Cambridge University Press, 1997).Google Scholar
[7] Mestrano, N. Conjecture de franchetta forte. Invent. Math. 87 (2) (1987), 365376.Google Scholar
[8] Seshadri, C.S. Fibres vectoriels sur les courbes algebriques. vol. 14023. Astérisque 96 (Paris, 1982).Google Scholar