Tohoku Mathematical Journal
2008

June
SECOND SERIES VOL. 60, NO. 2

Tohoku Math. J.
60 (2008), 183-218

Title TWISTED KUMMER AND KUMMER-ARTIN-SCHREIER THEORIES

Author Noriyuki Suwa

(Received July 27, 2006, revised August 21, 2007)
Abstract. We discuss an analogue of the Kummer and Kummer-Artin-Schreier theories, twisting by a quadratic extension. The argument is developed not only over a field but also over a ring, as generally as possible.

2000 Mathematics Subject Classification. Primary 13B05; Secondary 14L15, 12G05.

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