%0 Journal Article %T Elliptic K3 surfaces with p^n-torsion sections %A Hiroyuki Ito %A Christian Liedtke %J Mathematics %D 2010 %I arXiv %X We classify elliptic K3 surfaces in characteristic $p$ with $p^n$-torsion sections. For $p^n\geq3$ we verify conjectures of Artin and Shioda, compute the heights of their formal Brauer groups, as well as Artin invariants and Mordell--Weil groups in the supersingular cases. %U http://arxiv.org/abs/1003.0144v3