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math.AG2022
Virasoro constraints on moduli of sheaves and vertex algebras
Arkadij Bojko, Woonam Lim, Miguel Moreira
In enumerative geometry, Virasoro constraints were first conjectured in Gromov-Witten theory with many new recent developments in the sheaf theoretic context. In this paper, we rep…
math.SG2022
Contact invariants of Q-Gorenstein toric contact manifolds, the Ehrhart polynomial and Chen-Ruan cohomology
Miguel Abreu, Leonardo Macarini, Miguel Moreira
Q-Gorenstein toric contact manifolds provide an interesting class of examples of contact manifolds with torsion first Chern class. They are completely determined by certain rationa…