LIP6 2001/027:
Rapport de Recherche LIP6 /
LIP6
research reports
9 pages - Novembre/November 2001 -
Document en anglais.
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Thème/Team: Calcul Formel
Titre français : Clôture réelle et infinitésimaux
Titre anglais : Infinitesimals and real closure
Abstract : The purpose of this paper is to offer an alternative to Thom's coding (M.Coste-M.F.Roy) for real algebraic numbers when working over fields that contain infinitesimals. For this main case of non-archimedean ordered fields we modify Newton-Puiseux method (Duval, Walker) to separate and work with the distinct real roots of a polynomial. An Axiom implementation describing these methods is then presented.
Key-words : Real closure, infinitesimals, algebraic field extensions, real closed fields
Publications internes LIP6 2001 / LIP6 research reports 2001