Eivind Dahl
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 Mar17 accepted Which functor does the projective space represent? Mar17 comment Which functor does the projective space represent? Thank you! Another good answer. Hard to know which one to pick, but I think I'll go for this one because it is closer to the generality I asked for. I also found this treated in a set of notes by Strickland on formal schemes. Mar16 comment Which functor does the projective space represent? Thank you! I agree charts might not be all too great for understanding projective spaces, but the first thing I really understood and liked was the projective line, patched together by pieces of $k[t]$. It makes it clear to me why a meromorphic function on $X$ is the same thing as a morphism $X\to\mathbb{P}^1$. This complements nicely the notion of a regular function as a morphism $X\to\mathbb{A}^1$. If I was able to see from the definition of $\mathbb{P}^I$, that this was the case I would be every happy. At least you've told me what I need to stare at until it makes sense :-) Mar16 revised Which functor does the projective space represent? edited title Mar16 asked Which functor does the projective space represent? Feb23 awarded Nice Question Feb19 awarded Nice Answer Nov20 comment cup products and smash products Ok, I have no Idea what this question is actually asking anymore, but I'm glad you managed to find a satisfactory answer for yourself. Nov18 revised cup products and smash products added 16 characters in body Nov18 answered cup products and smash products Oct14 comment What's $F'(x)$ if $F(x) = \int_a^{g(x)} H(x,t) dt$? This is probably the favourite answer I've read on Stackexchange yet :-) So unbelievably natural, thank you! Aug19 comment Why is one “$\infty$” number enough for complex numbers? I'd love it if that downvote came with a comment. Aug10 comment False proof of $H_0 ( X) = 0$ That's it, Matt :-) Jul29 awarded Yearling Jul18 comment intersection of two affine open sets of a scheme Is the union of the $U,V$ off the mark here? A lower bound would be the open set. Am I missing something? Jul5 comment What happens geometrically when the Jacobson radical is non-zero? Well I think that answers my question pretty well to be honest. So thanks! Jun19 revised What happens geometrically when the Jacobson radical is non-zero? deleted 4 characters in body Jun19 revised What happens geometrically when the Jacobson radical is non-zero? added 2 characters in body; added 20 characters in body; deleted 21 characters in body Jun18 revised What happens geometrically when the Jacobson radical is non-zero? added 100 characters in body; added 9 characters in body; added 71 characters in body Jun18 revised What happens geometrically when the Jacobson radical is non-zero? added 135 characters in body; edited title