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Timeline for Degree of image of a polynomial map

Current License: CC BY-SA 3.0

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May 2, 2011 at 18:40 vote accept H A Helfgott
May 2, 2011 at 18:40 comment added H A Helfgott Great - thanks! This feels like it should be a standard argument - does anybody have a reference?
Apr 30, 2011 at 5:36 comment added Angelo Yes, instead of "generically finite and non-empty fibers", I should have written "finite and non-empty general fibers".
Apr 30, 2011 at 0:10 comment added pinaki Hi Charles: I guess he meant $generically$ non-empty fibers.
Apr 29, 2011 at 22:12 comment added Charles Staats I like this argument (and have upvoted it), but why should the morphism $V \to W$ have nonempty fibers, given that $W$ is, by definition, the closure of the image of $V$? (I imagine this can be repaired, but I think it needs to be pointed out.)
Apr 29, 2011 at 19:45 history answered Angelo CC BY-SA 3.0