Publications
2024
Thurston compactifications of spaces of stability conditions on curves
Kikuta, K., Koseki, N., & Ouchi, G. (n.d.). Thurston compactifications of spaces of stability conditions on curves. Transactions of the American Mathematical Society. doi:10.1090/tran/9104
2023
On the Bogomolov–Gieseker Inequality in Positive Characteristic
Koseki, N. (2023). On the Bogomolov–Gieseker Inequality in Positive Characteristic. International Mathematics Research Notices, 2023(24), 20784-20811. doi:10.1093/imrn/rnac260
Perverse schobers and Orlov equivalences
Koseki, N., & Ouchi, G. (2023). Perverse schobers and Orlov equivalences. EUROPEAN JOURNAL OF MATHEMATICS, 9(2). doi:10.1007/s40879-023-00628-x
2022
Categorical blow-up formula for Hilbert schemes of points
Stability conditions on Calabi-Yau double/triple solids
Koseki, N. (2022). Stability conditions on Calabi-Yau double/triple solids. Forum of Mathematics, Sigma, 10. doi:10.1017/fms.2022.58
2021
Birational geometry of moduli spaces of perverse coherent sheaves on blow-ups
Koseki, N. (2021). Birational geometry of moduli spaces of perverse coherent sheaves on blow-ups. Mathematische Zeitschrift, 299(3-4), 2379-2404. doi:10.1007/s00209-021-02774-y
Derived categories of Thaddeus pair moduli spaces via d-critical flips
Koseki, N., & Toda, Y. (2021). Derived categories of Thaddeus pair moduli spaces via d-critical flips. Advances in Mathematics, 391, 107965. doi:10.1016/j.aim.2021.107965
Perverse Coherent Sheaves on Blow-ups at Codimension 2 Loci
Koseki, N. (2021). Perverse Coherent Sheaves on Blow-ups at Codimension 2 Loci. International Mathematics Research Notices, 2021(15), 11452-11492. doi:10.1093/imrn/rnz175
2020
Stability conditions on threefolds with nef tangent bundles
Koseki, N. (2020). Stability conditions on threefolds with nef tangent bundles. Advances in Mathematics, 372, 107316. doi:10.1016/j.aim.2020.107316
2018
Stability conditions on product threefolds of projective spaces and Abelian varieties
Koseki, N. (2018). Stability conditions on product threefolds of projective spaces and Abelian varieties. Bulletin of the London Mathematical Society, 50(2), 229-244. doi:10.1112/blms.12132