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3
votes
Counting algebraic points of bounded height
This is true. Choose any linear subspace $Z$ (over $K$) of dimension $n- d-1$ and disjoint from $X$, and take $\pi : \mathbb{P}_K^n \setminus Z \to \mathbb{P}_K^d$ the corresponding linear projection. …
11
votes
1
answer
876
views
Higher Fano varieties and Tsen's theorem
The rational connectivity of (complex) Fano manifolds ($c_1(T_X) > 0$) is one of the major, and surely most memorable achievements of Mori's bend-and-break method. To this day, despite intensive work …
11
votes
Accepted
How important is Weil's decomposition theorem today?
Yes, this is the modern statement of Weil's theorem of decomposition. It is a basic component of the theory of heights. For a more recent exposition see 2.7.15 in Bombieri and Gubler's Heights in Diop …
6
votes
0
answers
134
views
Diophantine approximation in $\mathbb{G}_m^r$ with approximants restricted to a finiteley ge...
Faltings, in the same paper (Diophantine approximation on abelian varieties, Ann. Math. 1991) in which he proved his famous ``big theorem,'' proved also that at any place $v$ of a number field $K$ and …
6
votes
1
answer
536
views
Generalizations of de Franchis and function field Mordell
The classical de Franchis theorem, as generalized by S. Kobayashi and T. Ochiai ("Meromorphic mappings onto compact complex spaces of general type," Inventiones, 1975), states that if $X$ is a complex …