Alessio Bottini

  • Office 639, Huxley Building
    Department of Mathematics
    Imperial College London
    180 Queen's Gate
    London SW7 2AZ, United Kingdom
  • Email: abottini@ic.ac.uk
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Alessio Bottini

I am a Chapman Fellow in the Department of Mathematics at Imperial College London. Previously, I was a postdoctoral researcher in Bonn, working with Daniel Huybrechts. I received my Ph.D. in November 2023 from Université Paris-Saclay and Tor Vergata University under the supervision of Emanuele Macrì and Antonio Rapagnetta. Here is my CV.

I work in algebraic geometry, primarily on hyper-Kähler varieties and related topics. In particular, I study sheaves on hyper-Kähler varieties and their moduli spaces, with the aim of developing a higher-dimensional analogue of the theory for K3 surfaces. More recently, I have also become interested in Brauer groups and the period–index conjecture.

Publications and preprints:

  • The tangent bundle of a generalized Kummer fourfold is obstructed.
    Preprint (2026). [arXiv]
  • Semi-rigid stable sheaves: a criterion and examples (with Riccardo Carini).
    Preprint (2026). [arXiv]
  • The period-index problem for hyperkähler varieties: Lower and upper bounds (with Daniel Huybrechts).
    Preprint (2025). [arXiv]
  • Derived categories of Fano varieties of lines (with Daniel Huybrechts).
    Accepted in Algebraic Geometry. [arXiv]
  • O'Grady's tenfolds from stable bundles on hyper-Kähler fourfolds.
    Preprint (2024). [arXiv]
  • Towards a modular construction of OG10.
    Compositio Mathematica, 160 (2024). [arXiv] [Journal]
  • Stable sheaves on K3 surfaces via wall-crossing.
    Kyoto Journal of Mathematics, 64(2) (2024). [arXiv] [Journal]

Expository writing:

  • Hyper-Kähler varieties: Lagrangian fibrations, atomic sheaves, and categories (with Emanuele Macrì and Paolo Stellari)
    Survey written in the occasion of the 2025 Summer Research Institute in Algebraic Geometry.
    Preprint (2026). [arXiv]
  • The Looijenga–Lunts–Verbitsky Algebra and Verbitsky's Theorem
    Milan Journal of Mathematics, 90 (2022) [Journal]
  • A modular construction of OG10
    Oberwolfach reports, (2024) [Link]
  • Stable sheaves on hyper-Kähler manifolds
    PhD Thesis (2023). [Link]