Let $\mathbb A^n$ be the ndimensional affine space over a field K (algebraically closed if that makes it easier), so $\mathbb A^n= \text{Spec }K[x_1,...,x_n]$, and $\mathbb A^{n1}$ the (n1)dimensional analog. The inclusion $K[x_1,...,x_{n1}]\to K[x_1,...,x_n]$ induces a map $\mathbb A^n \to\mathbb A^{n1}$. Is this a projective map?
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closed as off topic by Will Sawin, Qing Liu, Dan Petersen, Kevin Ventullo, Andy Putman Nov 18 '12 at 0:17
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