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Tropical refined curve counting from higher genera and lambda classes

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arxiv 1706.07762 v2 pith:IEVZGC3S submitted 2017-06-23 math.AG

classification math.AG
keywords higherinvariantslambdaottschetropicalblockblock-gchange
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abstract

Block and G\"ottsche have defined a $q$-number refinement of counts of tropical curves in $\mathbb{R}^2$. Under the change of variables $q=e^{iu}$, we show that the result is a generating series of higher genus log Gromov-Witten invariants with insertion of a lambda class. This gives a geometric interpretation of the Block-G\"ottsche invariants and makes their deformation invariance manifest.

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  1. BPS polynomials and Welschinger invariants

    math.AG 2025-06 conditional novelty 7.0 of 10

    The new BPS polynomials of surfaces specialize at q=-1 to Welschinger invariants for blowups of the projective plane at up to six points.

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