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Timeline for Regular Morphism From Affine Line

Current License: CC BY-SA 2.5

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Oct 26, 2010 at 18:27 vote accept Damien Mondragon
Oct 11, 2010 at 10:41 history edited Georges Elencwajg CC BY-SA 2.5
modified the edit to reduce to the case of one polynomial
Oct 11, 2010 at 0:01 comment added Georges Elencwajg You're absolutely right BCnrd: nothing escapes your eagle eye! I have accounted for the possibility of some constant polynomials in an edit.
Oct 10, 2010 at 23:49 history edited Georges Elencwajg CC BY-SA 2.5
Added case of constant polynomials in Edit
Oct 10, 2010 at 12:53 comment added BCnrd The properness of $f_i$ fails when $p_i$ is constant, so one needs a small extra argument to deal with that (though finiteness of a single $f_i$ implies that of $f$). Or put another way, the argument is that $K[T]$ is module-finite over every $K$-subalgebra strictly larger than $K$.
Oct 10, 2010 at 9:26 history answered Georges Elencwajg CC BY-SA 2.5