Osaka Journal of Mathematics
- Osaka J. Math.
- Volume 54, Number 3 (2017), 409-433.
Mori Dream Spaces extremal contractions of K3 surfaces
We will give a criterion to assure that an extremal contraction of a K3 surface which is not a Mori Dream Space produces a singular surface which is a Mori Dream Space. We list the possible Néron--Severi groups of K3 surfaces with this property and an extra geometric condition such that the Picard number is greater than or equal to 10. We give a detailed description of two geometric examples for which the Picard number of the K3 surface is 3, i.e. the minimal possible in order to have the required property. Moreover we observe that there are infinitely many examples of K3 surfaces with the required property and Picard number equal to 3.
Osaka J. Math. Volume 54, Number 3 (2017), 409-433.
First available in Project Euclid: 7 August 2017
Permanent link to this document
Primary: 14J28: $K3$ surfaces and Enriques surfaces
Secondary: 14E30: Minimal model program (Mori theory, extremal rays)
Garbagnati, Alice. Mori Dream Spaces extremal contractions of K3 surfaces. Osaka J. Math. 54 (2017), no. 3, 409--433. https://projecteuclid.org/euclid.ojm/1502092821.