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Is there any command in Mathematica 7 which can compute the (McCaulay) resultant of a parametric system of multivariate polynomial equations? In fact, it would be great if there is also a way to compute the discriminant of such a system in Mathematica as well. Thanks, - dbm

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Something like Resultant[(x - a) (x - b) (y - h), (x - c) (x - d) (x - e) (y - j), {x, y}] ? –  belisarius Oct 27 '13 at 23:42
@belisarius, That gives two polynomials! I don't know what that means. –  dbm Oct 28 '13 at 14:39
Could try MultivariateResultantMacaulayResultant`. Just don't get worked up if your Mathematica kernel crashes: this stuff is old and unmaintained. Quite likely also untested. –  Daniel Lichtblau Oct 28 '13 at 15:14
@DanielLichtblau, How can I use this package? I don't seem to have it in Mathematica 7. –  dbm Oct 28 '13 at 23:20
I thought it was there in the Mathematica kernel. I guess it could be new to version 8 or 9. That would be good insofar as it would indicate that this might be tested, working functionality. –  Daniel Lichtblau Oct 29 '13 at 15:20

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