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5 papers · 1 filter
On the Rasmussen-Tamagawa conjecture for QM-abelian surfaces
Keisuke Arai
In the previous article, we showed the Rasmussen-Tamagawa conjecture for QM-abelian surfaces over imaginary quadratic fields. In this article, we generalize the previous work to QM…
Possibility of Exciton Mediated Superconductivity in Nano-Sized Sn/Si Core-Shell Clusters: A Process Technology towards Heterogeneous Material in Nano-Scale
Yuichiro Kurokawa, Takehiko Hihara, Ikuo Ichinose +1
We have produced Sn/Si core-shell cluster assemblies by a plasma-gas-condensation cluster beam deposition apparatus. For the sample with Si content = 12 at.%, the temperature depen…
Mixed Frobenius Structure and Local A-model
Yukiko Konishi, Satoshi Minabe
We define the notion of mixed Frobenius structure which is a generalization of the structure of a Frobenius manifold. We construct a mixed Frobenius structure on the cohomology of…
Rationality of the moduli spaces of Eisenstein K3 surfaces
Shouhei Ma, Hisanori Ohashi, Shingo Taki
K3 surfaces with non-symplectic symmetry of order 3 are classified by open sets of twenty-four complex ball quotients associated to Eisenstein lattices. We show that twenty-two of…
Variations of mixed Hodge structure and semi-positivity theorems
Osamu Fujino, Taro Fujisawa
We discuss the variations of mixed Hodge structure for cohomology with compact support of quasi-projective simple normal crossing pairs. We show that they are graded polarizable ad…