activity
20232026
collaborators

7 papers

math.AG2026

Tensor-generating line bundles on toric varieties

Daigo Ito, Michael R. Zeng, Xiangru Zeng

A line bundle is -generating if its powers generate the derived category of perfect complexes. Refining the derived Nakai--Moishezon criterion of Ito--Olander, we characte…

math.AG2026

Bondal--Orlov reconstruction for tame stacks with trivial generic stabilizer

Daigo Ito, Noah Olander

We generalize the Bondal--Orlov Reconstruction Theorem to smooth, proper, tame algebraic stacks with generically trivial stabilizer, whose canonical bundles are nowhere torsion: Th…

math.AG2025

Geometric Construction of Quiver Tensor Products

Daigo Ito, John S. Nolan

By a classic theorem of Beilinson, the perfect derived category of projective space is equivalent to the category of derived representations of…

math.AG2025

A derived category analogue of the Nakai--Moishezon criterion

Daigo Ito, Noah Olander

We give a complete characterization of the line bundles on a proper variety whose tensor powers generate the derived category, answering a 2010 question of Chris Brav. The conditio…

math.AG2025

Polarizations on a triangulated category

Daigo Ito

In a recent collaboration, Hiroki Matsui and the author introduced a new proof of the reconstruction theorem of Bondal-Orlov and Ballard, using Matsui's construction of a ringed sp…

math.AG2024

A new proof of the Bondal-Orlov reconstruction using Matsui spectra

Daigo Ito, Hiroki Matsui

In 2005, Balmer defined the ringed space for a given tensor triangulated category, while in 2023, the second author introduced the ringed…

math.AG2023

Gluing of Fourier-Mukai partners in a triangular spectrum and birational geometry

Daigo Ito

Balmer defined the tensor triangulated spectrum of a tensor triangulated category and showed that for a variety $X…