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  • Member for 6 years, 9 months
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Explicit family of polynomials describing embedded torus in complex projective space
" it can be used to argue that any complex dimension 2 torus cannot embed in CP4" That is not correct. There are abelian surfaces embedded in P^4, namely the zero-loci of sections of the Horrocks-Mumford bundle. It is true that a complete intersection in P^N cannot be a complex torus.
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Rational curves on the image of the pluricanonical maps
For sure one can construct examples of pairs $(X,m)$ for which the answer to your yes, but there are also examples where $Y_m$ does not contain any rational curves. What kind of answer are you looking for?
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Formula for genus of a Fano variety
Hmm, it seems I cannot delete (or even flag for deletion?) my own answer. Oh well.
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Formula for genus of a Fano variety
OK, in this case I think you should unaccept my answer and I will delete it for the time being.
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Formula for genus of a Fano variety
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Restricting a non-constant map to an ample divisor
@AriyanJavanpeykar: sure, all correct, let me fix.
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Restricting a non-constant map to an ample divisor
@DamianRössler: that's a nice reformulation, thanks.
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Restricting a non-constant map to an ample divisor
@DamianRössler: I claimed a bit more than my proof shows. I wrote an answer below to elaborate on what I had in mind.
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Is any proper subvariety contained in hypersurface
If I understand the terminology correctly, no. There are examples of 2-dimensional compact complex manifolds $X$ which contain no compact analytic subvarieties of dimension 1. For such an $X$, take $A$ to be any point in $X$.
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