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Blown-up boundaries associated with ample cones of K3 surfaces (2312.13831v2)
Published 21 Dec 2023 in math.AG and math.GR
Abstract: In this paper, we apply the Bestvina-Mess type formula for relatively hyperbolic groups, which is established by Tomohiro Fukaya, to automorphism groups of K3 surfaces, and we show that the virtual cohomological dimension of automorphism groups of K3 surfaces determined by the covering dimension of the blown-up boundaries associated with their ample cones.
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