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On the geometric P=W conjecture

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arxiv 1810.11837 v4 pith:D5ZAPOQO submitted 2018-10-28 math.AG

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keywords geometriccharacterconjecturegenusvarietiesarbitrarybirationalboundary
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We formulate the geometric P=W conjecture for singular character varieties. We establish it for compact Riemann surfaces of genus one, and obtain partial results in arbitrary genus. To this end, we employ non-Archimedean, birational and degeneration techniques to study the topology of the dual boundary complex of certain character varieties. We also clarify the relation between the geometric and the cohomological P=W conjectures.

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  1. The Frobenius structure theorem for affine log Calabi-Yau varieties containing a torus

    math.AG 2019-08 accept novelty 8.0 of 10

    Naive counts of rational curves in an affine log Calabi-Yau variety containing a torus uniquely determine a Frobenius algebra, now proved via non-archimedean analytic disk counting.

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