dc.contributor.author | Ranestad, Kristian | |
dc.contributor.author | Kapustka, Michal | |
dc.contributor.author | Kapustka, Grzegorz | |
dc.contributor.author | Iliev, Atanas | |
dc.date.accessioned | 2020-03-20T09:25:14Z | |
dc.date.available | 2020-03-20T09:25:14Z | |
dc.date.created | 2017-09-08T18:43:07Z | |
dc.date.issued | 2017-09 | |
dc.identifier.citation | Iliev, A., Kaputska, G., Kaputska,M. et al. (2017) Hyper-Kähler fourfolds and Kummer surfaces. Proceedings of the London Mathematical Society, 115(6), 1276-1316 | en_US |
dc.identifier.issn | 0024-6115 | |
dc.identifier.uri | https://hdl.handle.net/11250/2647720 | |
dc.description.abstract | We show that a Hilbert scheme of conics on a Fano fourfold double cover of
PP2xP2 ramified along a divisor of bidegree (2,2) admits a ℙ 1‐fibration with base being a hyper‐Kähler fourfold. We investigate the geometry of such fourfolds relating them with degenerated EPW cubes (see Iliev et al., J. reine angew. Math. (2016), https://doi.org/10.1515/crelle‐2016‐0044), with elements in the Brauer groups of 𝐾3‐surfaces of degree 2, and with Verra threefolds. These hyper‐Kähler fourfolds admit natural involutions and complete the classification of geometric realizations of antisymplectic involutions on hyper‐Kähler fourfolds of type K3[2].
As a consequence we present also three constructions of quartic Kummer surfaces in
ℙ3: as Lagrangian and symmetric degeneracy loci and as the base of a fibration of conics in certain threefold quadric bundles over ℙ1.. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Proceedings of the London Mathematical Society | en_US |
dc.subject | mattmatikk | en_US |
dc.title | Hyper-Kähler fourfolds and Kummer surfaces | en_US |
dc.type | Journal article | en_US |
dc.type | Peer reviewed | en_US |
dc.description.version | acceptedVersion | en_US |
dc.rights.holder | © 2017 London Mathematical Society | en_US |
dc.subject.nsi | VDP::Mathematics and natural science: 400::Mathematics: 410 | en_US |
dc.source.volume | 115 | en_US |
dc.source.journal | Proceedings of the London Mathematical Society | en_US |
dc.source.issue | 6 | en_US |
dc.identifier.doi | 10.1112/plms.12063 | |
dc.identifier.cristin | 1492284 | |
dc.relation.project | Norges forskningsråd: 239015 | en_US |
cristin.unitcode | 217,8,2,0 | |
cristin.unitname | Institutt for matematikk og naturvitenskap | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 2 | |