Let $X\rightarrow\mathrm{Spec}\:\mathbb{C}$ be an affine smooth morphism of relative dimension$\leq 1$. What is a reference for the fact that there exists a $\mathbb{C}$-locally closed immersion $X\rightarrow \mathbb{P}^2$?
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2$\begingroup$ Z. Jelonek: Smooth affine curves without embeddings into the affine plane. Bull. Polish Acad. Sci. Math. 47 (1999), no. 4, 363–367. $\endgroup$– abxCommented Jun 19, 2019 at 7:07
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$\begingroup$ meta.mathoverflow.net/questions/4200/flood-of-similar-new-users $\endgroup$– Squid with Black Bean SauceCommented Jun 19, 2019 at 15:05
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