Local Galois theory in dimension two |
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Authors: | David Harbater Katherine F. Stevenson |
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Affiliation: | a Department of Mathematics, University of Pennsylvania, Philadelphia, PA 19104-6395, USA b Department of Mathematics, California State University at Northridge, Northridge, CA 91330, USA |
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Abstract: | This paper proves a generalization of Shafarevich's Conjecture, for fields of Laurent series in two variables over an arbitrary field. This result says that the absolute Galois group GK of such a field K is quasi-free of rank equal to the cardinality of K, i.e. every non-trivial finite split embedding problem for GK has exactly proper solutions. We also strengthen a result of Pop and Haran-Jarden on the existence of proper regular solutions to split embedding problems for curves over large fields; our strengthening concerns integral models of curves, which are two-dimensional. |
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Keywords: | primary 12E30 12F10 14H30 secondary 11S20 12F12 14J20 |
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