Elliptic fibrations on K3 surfaces with a non-symplectic involution fixing rational curves and a curve of positive genus

A Garbagnati, C Salgado - Revista Matematica Iberoamericana, 2020 - ems.press
In this paper we complete the classification of the elliptic fibrations on K3 surfaces which
admit a non-symplectic involution acting trivially on the Néron–Severi group. We use the …

Non-thin rank jumps for double elliptic K3 surfaces

H Pasten, C Salgado - manuscripta mathematica, 2024 - Springer
For an elliptic surface π: X→ P 1 defined over a number field K, a theorem of Silverman
shows that for all but finitely many fibres above K-rational points, the resulting elliptic curve …

On Néron–Severi lattices of Jacobian elliptic K3 surfaces

A Clingher, A Malmendier - manuscripta mathematica, 2024 - Springer
We classify all Jacobian elliptic fibrations on K3 surfaces with finite automorphism group. We
also classify all Jacobian elliptic fibrations with finite Mordell–Weil group on K3 surfaces with …

Calabi–Yau 4-folds of Borcea–Voisin type from F-theory

A Cattaneo, A Garbagnati, M Penegini - Pacific Journal of Mathematics, 2019 - msp.org
Abstract We apply Borcea–Voisin's construction and give new examples of Calabi–Yau 4-
folds Y, which admit an elliptic fibration onto a smooth 3-fold V, whose singular fibers of type …

Fields of definition of elliptic fibrations on covers of certain extremal rational elliptic surfaces

V Cantoral-Farfán, A Garbagnati, C Salgado… - Women in Numbers …, 2021 - Springer
We study K3 surfaces over a number field k which are double covers of extremal rational
elliptic surfaces. We provide a list of all elliptic fibrations on certain K3 surfaces together with …

On two-elementary K3 surfaces with finite automorphism group

A Clingher, A Malmendier, F Poon - arXiv preprint arXiv:2206.00269, 2022 - arxiv.org
We study complex algebraic K3 surfaces of Picard ranks 11, 12, and 13 of finite
automorphism group that admit a Jacobian elliptic fibration with a section of order two. We …

On K3 surfaces of Picard rank 14

A Clingher, A Malmendier - Mathematische Nachrichten, 2009 - Wiley Online Library
We study complex algebraic K3 surfaces with finite automorphism groups and polarized by
rank 14, 2‐elementary lattices. Three such lattices exist, namely, H⊕ E 8 (− 1)⊕ A 1 (− 1)⊕ …

Elliptic fibrations and involutions on K3 surfaces

A Garbagnati, C Salgado - Women in Numbers Europe IV: Research …, 2024 - Springer
We survey our contributions on the classification of elliptic fibrations on K3 surfaces with a
non-symplectic involution. We place them in the more general framework of K3 surfaces with …

Jacobian elliptic fibrations on the generalized Inose quartic of Picard rank sixteen

A Clingher, T Hill, A Malmendier - Albanian Journal of …, 2023 - projecteuclid.org
We consider the family of complex algebraic K3 surfaces 𝒳 with Picard lattice containing the
unimodular lattice H⊕ E7 (− 1)⊕ E7 (− 1). The surface 𝒳 admits a birational model …