3 papers
math.AG2026
Hitchin systems and their quantization
Pavel Etingof, Henry Liu
This is an expanded version of the notes by the second author of the lectures on Hitchin systems and their quantization given by the first author at the Beijing Summer Workshop in…
math.AG2025
Semistable refined Vafa-Witten invariants
Henry Liu
For any smooth complex projective surface , we construct semistable refined Vafa-Witten invariants of which prove the main conjecture of arXiv:1810.00078. This is done by ex…
math.AG2025
Wall-crossing for invariants of equivariant 3CY categories
Nikolas Kuhn, Henry Liu, Felix Thimm
We provide a wall-crossing framework for operational enumerative invariants of equivariant 3-Calabi--Yau categories arising from virtual cycles. The strategy follows ideas of Joyce…