Mathematical Research Letters

Volume 22 (2015)

Number 3

Néron-Severi group preserving lifting of $\mathrm{K}3$ surfaces and applications

Pages: 789 – 802



Junmyeong Jang (Department of Mathematics, University of Ulsan, Namgu Ulsan, Korea)


For complex algebraic $\mathrm{K}3$ surfaces, there are criteria in terms of Néron-Severi lattice to be a Kummer surface and to be an Enriques $\mathrm{K}3$ surface. In this paper, using a Néron-Severi group preserving lifting, we prove that the same criteria hold for $\mathrm{K}3$ surfaces of finite height over a field of odd characteristic. We also classify $\mathrm{K}3$ surfaces of Picard number $20$ over a field of odd characteristic.

Published 20 May 2015