Abstract
We study abelian covers of rational surfaces branched over line arrangements. We use these covers to address the geography problem for closed simply connected nonspin irreducible symplectic 4-manifolds with positive signature.
Funding statement: The third author was partially supported by a Discovery Grant from the NSERC of Canada. The research of the fourth author was supported in part by a SERB MATRICS Grant: MTR/2019/001613.
Acknowledgements
The authors thank Krishna Hanumanthu for helpful email correspondence.
Communicated by: P. Eberlein
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