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Double-point enhanced GRID invariants and Lagrangian cobordisms

Published 12 May 2025 in math.GT and math.SG | (2505.07599v1)

Abstract: We define an invariant of Legendrian links in the double-point enhanced grid homology of a link, and prove that it obstructs decomposable Lagrangian cobordisms in the symplectization of the standard contact structure on $\mathbb R3$.

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