Computing subfields : Reverse of the primitive element problem
Résumé
We describe an algorithm which computes all subfields of an effectively given finite algebraic extension. Although the base field can be arbitrary, we focus our attention on the rationals. This appears to be a fundamental tool for the simplification of algebraic numbers.
Domaines
Calcul formel [cs.SC]
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1993_Mega92_CompAlgGeo_ProgMath_Lazard_Valibouze_HAL_2017_12_23.pdf (327.48 Ko)
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