Subtleties of Quantum Lefshetz without Convexity
Abstract
Let Y/-6mu/θ G be a complete intersection in a GIT quotient X/-6mu/θ G cut out by a G-representation E. We show that the E-twisted quasimap I-function recovers invariants of (Y, G, θ) if its nonequivariant limit exists before restriction to Y/-6mu/θ G. This corrects a conjecture credited to Coates-Corti-Iritani-Tseng. We explain how to correct computations in the literature based on the faulty conjecture.
0
Turn this paper into a full lesson
ArcXiv compiles a staged curriculum from this paper: 8-12 lessons across beginner → advanced, synthesised section guides, visuals, flashcards, a quiz, exercises, and on-demand deep dives per section. Grounded in the abstract, never invented.