Shafarevich theorem
# Shafarevich theorem

In mathematics, the Shafarevich theorem, named for Igor Shafarevich, may refer to:

* Néron–Ogg–Shafarevich criterion
* Golod–Shafarevich theorem about class field towers
* Grothendieck–Ogg–Shafarevich formula
* Shafarevich's theorem on solvable Galois groups
* Shafarevich–Weil theorem about the fundamental class in class field theory
* Shafarevich's theorem on elliptic curves with good reduction outside a given set.
