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Mathematics of Computation

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Cyclic-sixteen class fields for $ {\bf Q}((-p)\sp{1/2})$ by modular arithmetic

Author: Harvey Cohn
Journal: Math. Comp. 33 (1979), 1307-1316
MSC: Primary 16A05
MathSciNet review: 537976
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Abstract: Numerical experiments result in the construction of cyclic-sixteen class fields for $ {\mathbf{Q}}{( - p)^{1/2}}$, p prime $ < 2000$, by radicals involving quadratic and biquadratic parameters. These fields are characterized by rational factorization properties modulo a variable prime; but it suffices to use only three primes selected and checked by computer to verify the class field, if earlier work (jointly with Cooke) on the cyclic-eight class field is utilized.

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Article copyright: © Copyright 1979 American Mathematical Society