Le samedi 12 novembre 2016 06:50:45 UTC+1, Bill Hart a écrit : > > > > Looking how the content (188 monomials) is computed, it's done by exact >> divisions only (it's the leading coefficient up to trivial coefficients). >> > > Can you give me a hint where this is implemented. I didn't find this > yesterday. It's a nice trick. > > It's in gausspol.cc, around line 4100 "Trying p/lgcd(p)) as gcd". If the degree of the gcd of the evaluation is the same as the degree of one of the arguments, then there is a very good chance that the gcd itself is one of the argument. I think it's a good idea to look at sources, most papers do not describe tricks, and some papers/books are written by people that did not really implement, which means they miss some points.
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