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5 votes
1 answer
333 views

$\ell$-adic analogue of Kedlaya–Mochizuki

There is a well-known analogy between holonomic $\mathcal{D}$-modules on complex algebraic varieties and $\ell$-adic perverse sheaves on varieties over finite fields. Many theorems in one setting have ...
Gabriel's user avatar
  • 773
1 vote
0 answers
89 views

Generic reducedness of geometric generic fibre

Let $f:X\to Y$ be a surjective morphism between two projective schemes over a field of characteristic $p>0$. Also assume that $X$ is smooth,$Y$ smooth & irreducible and $f_*\mathcal{O}_X=\...
user267839's user avatar
  • 6,006
3 votes
0 answers
67 views

p-torsion in the Tate-Shafarevich group of supersingular elliptic curves

Let $E$ be a supersingular elliptic curve over $\mathbb{F}_p(t)$. Is something known on the $p$-torsion of the Tate–Shafarevich group in this case? In particular, I would like to know if (or if known ...
user 123935's user avatar