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Hello! I am a postdoctoral researcher at the University of Bonn in the group of Daniel Huybrechts, funded by the ERC Synergy Grant HyperK.
I received my Ph.D. from Yale University in 2025, where I worked with Junliang Shen. My research concerns the geometry of moduli spaces of sheaves, mostly on del Pezzo surfaces, with a focus on the structure of their cohomology rings. More recently, I also started thinking about related questions in hyperkähler geometry.
Starting September 2026, I will be a Szegö Assistant Professor at Stanford University.
Here is my Curriculum Vitae.
Email: weitepi@math.uni-bonn.de
Traveling:
Enumerative geometry, rationality, derived categories and interactions, Orsay, June 9 - 12.
Geometry of instantons and quivers, Lille, June 22 - 26.
Workshop on Geometric Representation Theory, Amiens, June 29 - July 1.
ICM 2026, Philadelphia, July 23 - 30.
Publications and Preprints:
Brauer groups of smooth loci in linear systems and torsors over Jacobians of plane curves (with M. Hartlieb). arXiv: 2606.11842.
On the Chern filtration for the moduli of bundles on curves (with W. Lim and M. Moreira). arXiv: 2410.24008. Submitted.
Cohomological stabilization, perverse filtrations, and refined BPS invariants for del Pezzo surfaces (with J. Shen, F. Si, and F. Zhang). arXiv: 2406.10004. Submitted.
Cohomology rings of the moduli of one-dimensional sheaves on the projective plane (with Y. Kononov, W. Lim, and M. Moreira). arXiv: 2403.06277. Cohomology rings. Submitted.
Cohomological χ-dependence of ring structure for the moduli of one-dimensional sheaves on P2 (with W. Lim and M. Moreira). Forum Math. Sigma. 12 (2024) No. e47, 17 pp. arXiv: 2305.14193. Mathematica codes.
Perverse filtrations, Chern filtrations, and refined BPS invariants for local P2 (with Y. Kononov and J. Shen). Adv. Math. 433 (2023) 109294, 29 pp. arXiv: 2211.06991.
Generators for the cohomology ring of the moduli of one-dimensional sheaves on P2 (with J. Shen). Algebr. Geom. 10 (4) (2023) 504–520. arXiv: 2204.05866.
Last updated June 11, 2026.
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