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JOURNALS // Matematicheskie Trudy // Archive

Mat. Tr., 2003 Volume 6, Number 1, Pages 28–33 (Mi mt83)

This article is cited in 1 paper

Projectivity of the Absolute Galois Groups of Multi-Valued Fields

Yu. L. Ershov

Sobolev Institute of Mathematics, Siberian Branch of the Russian Academy of Sciences

Abstract: In the article, we establish the projectivity property for the enriched Galois groups of multi-valued fields having a near Boolean family of valuation rings and satisfying the arithmetic local-global principle $\mathrm{LG}_A$. This property extends the corresponding property that was proved by the author for the case of Boolean families. As application, we give a sufficient condition for the inverse Galois problem to be solvable. This condition can be applied in particular to the wonderful extensions of the field of rational numbers.

Key words: projectivity, $\delta$-group, multi-valued field, local-global principle.

UDC: 510.53+512.52

Received: 24.06.2002


 English version:
Siberian Advances in Mathematics, 2004, 14:1, 1–6

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