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Decorated marked surfaces II: Intersection numbers and dimensions of Homs

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arxiv 1411.4003 v3 pith:T7BRJ6LU submitted 2014-11-14 math.RT math.CTmath.GT

classification math.RTmath.CTmath.GT
keywords arcsbigtriangleupcertaindecorateddimensionsintersectionmarkedmathbf
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abstract

We study the 3-Calabi-Yau categories $\mathcal{D}$ arising from quivers with potential associated to a decorated marked surface $\mathbf{S}_\bigtriangleup$ introduced by the first author. We prove two conjectures in the prequel, that under a bijection between certain objects in $\mathcal{D}$ and certain arcs in $\mathbf{S}_\bigtriangleup$, the dimensions of morphisms between these objects equal the intersection numbers between the corresponding arcs.

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  1. Topological model for derived category associated to sphere with four binaries

    math.RT 2026-07 conditional novelty 6.0 of 10

    Indecomposable rigid objects in the derived category of the (2,2,2,2)-weighted projective line are shown to correspond to graded simple arcs on a sphere with four binaries, with Hom-dimensions given by oriented inters...

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