Counting higher-rank sheaves on toric threefolds
We develop an equivariant K-theoretic vertex formalism for a colored, abelianized higher-rank sector on smooth projective toric threefolds $X$. Nonzero first Chern classes are encoded as magnetic fluxes and absorbed into line-bundle twists, after which the virtual character is redistributed into finite perturbative, ve...
N. Piazzalunga, A. Sheshmani, Shing-Tung Yau
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