Coates–Corti–Iritani–Tseng's quantum Lefschetz conjecture without convexity
Coates–Corti–Iritani–Tseng's quantum Lefschetz conjecture without convexity
Let be an abelian group acting in a CI-GIT presentation, and let be the corresponding quotient with projective coarse moduli space. Let be the embedding, let be the -twisted quasimap -function, and let be the equivariant parameter for fiberwise scaling of . Coates–Corti–Iritani–Tseng's conjecture. If
exists, then
is on the Lagrangian cone of . The paper explains that this conjecture is faulty: the nonequivariant limit must exist before restriction to , so the stated claim is refuted by the correction developed in the paper.
Sources & referencesView supporting material
Primary source
Nawaz Sultani and Rachel Webb, “Subtleties of Quantum Lefshetz without Convexity”, arXiv:2208.08987 (2022).
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