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Vanishing and identities of conformal blocks divisors (1308.4906v4)
Published 22 Aug 2013 in math.AG, math.QA, and math.RT
Abstract: Conformal block divisors in type A on $\bar{M}_{0,{n}}$ are shown to satisfy new symmetries when levels and ranks are interchanged in non-standard ways. A connection with the quantum cohomology of Grassmannians reveals that these divisors vanish above the critical level.
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