3 papers
math.AG2026
Quiver braid group action for a 3-fold crepant resolution
Will Donovan, Luyu Zheng
The 3-fold cyclic quotient singularity denoted admits a crepant resolution X with three exceptional Hirzebruch surfaces intersecting pairwise along curves. We…
math.AG2026
Derived symmetries for crepant contractions to hypersurfaces
W. Donovan
Given a crepant contraction f to a singularity X, we may expect a derived symmetry of the source of f. Under easily-checked geometric assumptions, I construct such a symmetry when…
math.AG2025
Window categories for a simple -fold flop of Grassmannian type
Will Donovan, Wahei Hara, MichaÅ Kapustka +1
The local simple -fold flop of Grassmannian type is a birational transformation between total spaces of vector bundles on the Grassmannians and $\mathrm{Gr}(…