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math.AG2024
Towards refined curve counting on the Enriques surface II: Motivic refinements
Georg Oberdieck
We study the motivic Pandharipande-Thomas invariants of the Enriques Calabi-Yau threefolds in fiber curve classes by basic computations and analysis of a wallcrossing formula of To…
math.AG2024
Towards refined curve counting on the Enriques surface I: K-theoretic refinements
Georg Oberdieck
We conjecture an explicit formula for the -theoretically refined Vafa-Witten invariants of the Enriques surface. By a wall-crossing argument the conjecture is equivalent to a ne…