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Elimination of ramification I: The generalized stability theorem
Author(s):
Franz-Viktor
Kuhlmann
Journal:
Trans. Amer. Math. Soc.
362
(2010),
5697-5727.
MSC (2010):
Primary 12J10, 13A18;
Secondary 12L12, 14B05
Posted:
June 11, 2010
MathSciNet review:
2661493
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Additional information
Abstract:
We prove a general version of the ``Stability Theorem'': if is a valued field such that the ramification theoretical defect is trivial for all of its finite extensions, and if is a finitely generated (transcendental) extension of valued fields for which equality holds in the Abhyankar inequality, then the defect is also trivial for all finite extensions of . This theorem is applied to eliminate ramification in such valued function fields. It has applications to local uniformization and to the model theory of valued fields in positive characteristic.
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Additional Information:
Franz-Viktor
Kuhlmann
Affiliation:
Department of Mathematics and Statistics, University of Saskatchewan, 106 Wiggins Road, Saskatoon, Saskatchewan, Canada S7N 5E6
Email:
fvk@math.usask.ca
DOI:
10.1090/S0002-9947-2010-04973-6
PII:
S 0002-9947(2010)04973-6
Received by editor(s):
May 27, 2008
Posted:
June 11, 2010
Copyright of article:
Copyright
2010,
American Mathematical Society
The copyright for this article reverts to public domain after 28 years from publication.
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