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A cell decomposition for marked cycle curves

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arxiv 2410.21049 v1 pith:PPN4PIUJ submitted 2024-10-28 math.DS

classification math.DS
keywords cyclefamilycurvesmarkedtextrmcelldecompositionmathcal
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abstract

We describe a family $\textrm{Cyc}_p(\mathcal{F})$ of marked cycle curves that parameterize the cycles of period $p$ of a given family $\mathcal{F}$ of dynamical systems. We produce algorithms to compute a canonical cell decomposition for the marked cycle curves over the family $\textrm{Per}_1(0)$ of quadratic polynomials as well as over the family $\textrm{Per}_2(0)$ of quadratic rational maps with a critical 2-cycle. We obtain formulas for the number of $d$-cells in these decompositions, giving rise to e.g. a formula for their genus.

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