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Aug 17, 2017 at 19:12 answer added Adrian timeline score: 3
Aug 14, 2012 at 17:38 vote accept David E Speyer
Aug 14, 2012 at 2:41 comment added Will Jagy @Igor, mostly if they are rational and a common denominator can be found, I get a different sense of this. You can do Gaussian elimination over the integers, and over polynomials with integer coefficients, by keeping track of a steadily growing common divisor.
Aug 13, 2012 at 23:20 history edited David E Speyer CC BY-SA 3.0
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Aug 13, 2012 at 21:40 comment added Igor Rivin @Will: What exactly do you mean by your question?
Aug 13, 2012 at 20:19 comment added Will Jagy Are the floating point entries rational, real algebraic, or other?
Aug 13, 2012 at 19:06 comment added Igor Rivin The problem is that the matrix is not a numeric matrix, so you will wind up with horribly huge rational functions (with floating point coefficients).
Aug 13, 2012 at 18:52 answer added Igor Rivin timeline score: 4
Aug 13, 2012 at 18:50 answer added Chris Godsil timeline score: 3
Aug 13, 2012 at 18:44 comment added Qiaochu Yuan What goes wrong with Gaussian elimination? Is it numerically unstable?
Aug 13, 2012 at 18:28 history asked David E Speyer CC BY-SA 3.0