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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. …
Vesselin Dimitrov's user avatar
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 …
Vesselin Dimitrov's user avatar
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 …
Vesselin Dimitrov's user avatar
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 …
Vesselin Dimitrov's user avatar
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 …
Vesselin Dimitrov's user avatar