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March 3, 20260 citations

The local/logarithmic correspondence and the degeneration formula for Quasimaps

ARA. Cobos RabanoCMC. ManolacheQSQ. Shafi

Key Points

  • The relationship observed correlates enumerative geometry of rational curves with logarithmic curve counts.
  • Our analysis employs quasimap theory, indicating a new degeneration formula's significance for quasimaps.
  • Findings also show that standard Gromov-Witten formulations may fail in normal crossings contexts.
  • This work emphasizes the interconnectedness of various Gromov-Witten theories and their applications through the mirror map.

Abstract

We study the relationship between the enumerative geometry of rational curves in local geometries and various versions of maximal contact logarithmic curve counts. Our approach is via quasimap theory, and we show versions of the vGGR19 local/logarithmic correspondence for quasimaps, and in particular for normal crossings settings, where the Gromov-Witten theoretic formulation of the correspondence fails. The results suggest a link between different formulations of relative Gromov-Witten theory for simple normal crossings divisors via the mirror map. The main results follow from a rank reduction strategy, together with a new degeneration formula for quasimaps.

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Cite This Study

Rabano et al. (2026) studied this question.

synapsesocial.com/papers/69a75d5ec6e9836116a2755e
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