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Oct 9, 2010 at 6:43 vote accept domenico fiorenza
Oct 8, 2010 at 17:46 answer added Torsten Ekedahl timeline score: 1
Oct 8, 2010 at 17:41 comment added Tyler Lawson If $X$ is a point and $n = 1$, this is asking whether the ring of smooth functions on $\mathbb{R}$ is a retract of a polynomial algebra. That seems unlikely, but I don't have a proof.
Oct 8, 2010 at 15:31 history asked domenico fiorenza CC BY-SA 2.5