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On the Index of a Number Field
Transactions of the American Mathematical Society
Vol. 289, No. 1 (May, 1985), pp. 171-183
Published by: American Mathematical Society
Stable URL: http://www.jstor.org/stable/1999694
Page Count: 13
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Arithmetic invariants are found which determine the index i(K) of a number field K. They are used to obtain an explicit formula under certain restrictions on K. They provide also a complete explanation of a phenomenon conjectured by Ore  and showed by Engstrom in a particular case .
Transactions of the American Mathematical Society © 1985 American Mathematical Society