Higher degree Harrison equivalence and Milnor -functor
Andrzej Sładek (1998)
Acta Mathematica et Informatica Universitatis Ostraviensis
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Andrzej Sładek (1998)
Acta Mathematica et Informatica Universitatis Ostraviensis
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Przemyslaw Koprowski (2002)
Colloquium Mathematicae
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We examine the conditions for two algebraic function fields over global fields to be Witt equivalent. We develop a criterion solving the problem which is analogous to the local-global principle for Witt equivalence of global fields obtained by R. Perlis, K. Szymiczek, P. E. Conner and R. Litherland [12]. Subsequently, we derive some immediate consequences of this result. In particular we show that Witt equivalence of algebraic function fields (that have rational places) over global fields...
Kazimierz Szymiczek (2002)
Acta Mathematica et Informatica Universitatis Ostraviensis
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Kazimierz Szymiczek (1991)
Mathematica Slovaca
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Przemysław Koprowski (2007)
Mathematica Slovaca
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Przemysław Koprowski (2007)
Czechoslovak Mathematical Journal
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We present criteria for a pair of maps to constitute a quaternion-symbol equivalence (or a Hilbert-symbol equivalence if we deal with global function fields) expressed in terms of vanishing of the Clifford invariant. In principle, we prove that a local condition of a quaternion-symbol equivalence can be transcribed from the Brauer group to the Brauer-Wall group.