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S Apr 10, 2018 at 19:18 history suggested Rodrigo de Azevedo
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Apr 10, 2018 at 18:49 review Suggested edits
S Apr 10, 2018 at 19:18
Dec 9, 2011 at 10:28 comment added Martin Bright It's worth pointing out that even basic invariants such as dimension are sensitive to small changes in the defining polynomials. For example, there are plenty of curves in 3-space which require three defining polynomials (as opposed to the 2 you might expect for easy cases). Perturb one of those polynomials and you find that they now define a point instead of a curve. I suppose you have to look at sets of the form $|f_i| < \epsilon$ instead of $f_i=0$.
Dec 8, 2011 at 22:48 comment added Fernando Muro All math problems are real world problems
Dec 8, 2011 at 21:20 answer added Markus Schweighofer timeline score: 6
Nov 17, 2009 at 15:52 vote accept TerronaBell
Nov 17, 2009 at 7:13 answer added user1855 timeline score: 9
Nov 17, 2009 at 2:17 answer added Kristal Cantwell timeline score: 8
Nov 17, 2009 at 2:09 answer added Greg Kuperberg timeline score: 25
Nov 17, 2009 at 0:59 history edited Greg Kuperberg
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Nov 17, 2009 at 0:53 history asked TerronaBell CC BY-SA 2.5