On Sunday, March 22, 2015 at 2:49:37 PM UTC+5:30, Luv Agarwal wrote: > > > > On Saturday, March 21, 2015 at 12:15:34 PM UTC+5:30, Kalevi Suominen wrote: >> >> >> >> On Saturday, March 21, 2015 at 3:40:07 AM UTC+2, Luv Agarwal wrote: >>> >>> I have added the implementation details of few functions in the draft >>> <https://github.com/sympy/sympy/wiki/GSoC-2015-Application-Luv-Agarwal:-Cylindrical-Algebraic-Decomposition> >>> . >>> >>> How can I implement refine_root (and dup_isolate_real_roots_sqf) for >>> polynomials over algebraic numbers? >>> >> >> One would need a method for determining the sign of an algebraic number. >> Those in AlgebraicField (is_positive, >> is_negative, ...) are not suitable for this purpose. >> > Thanks, I looked at them. How can I implement dup_isolate_real_roots_sqf for algebraic domains?
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