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Jul 10, 2015 at 19:01 answer added user484 timeline score: 5
Jul 9, 2015 at 20:06 comment added user484 This works on reals but not on complex numbers: Reduce[Exists[{x1, x2}, x1 ∈ Reals && x2 ∈ Reals && Abs[x1 - 1] <= 1 && Abs[x2 - 1] <= 1 && x1 x2 == x], x, Reals] gives 0 ≤ x ≤ 4.
Jul 9, 2015 at 19:36 history edited tituf CC BY-SA 3.0
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Jul 9, 2015 at 18:18 comment added tituf @MarcoB I added an example to be more clear. My sets are infinite indeed.
Jul 9, 2015 at 18:17 history edited tituf CC BY-SA 3.0
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Jul 9, 2015 at 17:18 comment added MarcoB I am not sure that you provided enough detail for us to help you effectively. What are the $f$ functions? In general, even in an enclosed region, shouldn't there be an infinite amount of points $z$ that satisfy the $f(z)>0$ condition? It is not clear to me, then, how exactly I should interpret your sum in such a case.
Jul 9, 2015 at 16:56 comment added tituf I don't know, since ParametricPlot seems to accept only two paramters for a 2dimensional region..
Jul 9, 2015 at 16:47 review First posts
Jul 9, 2015 at 16:50
Jul 9, 2015 at 16:46 history asked tituf CC BY-SA 3.0