Dimension conjecture for discrete holomorphic quadratic differentials

Let QC(cr)Q^{\mathbb{C}}(\operatorname{cr}) and QR(cr)Q^{\mathbb{R}}(\operatorname{cr}) denote the complex and real spaces of discrete holomorphic quadratic differentials associated with a cross ratio system, and let VV be the vertex set of a closed triangulated surface of genus gg. For a Delaunay cross ratio system cr\operatorname{cr}, the conjectured dimensions are

dimCQC(cr)={V+1if g=1,V+6g6if g2,\dim_{\mathbb{C}} Q^{\mathbb{C}}(\operatorname{cr}) = \begin{cases} |V|+1 & \text{if } g=1,\\ |V|+6g-6 & \text{if } g\geq 2, \end{cases}

and

dimRQR(cr)=6g6if g2.\dim_{\mathbb{R}} Q^{\mathbb{R}}(\operatorname{cr})=6g-6 \quad \text{if } g\geq 2.

This would determine the dimensions of the infinitesimal deformation spaces for Delaunay cross ratio systems beyond the already discussed sphere and torus cases; the supplied text gives no resolution of the conjecture.

Sources & referencesView supporting material

Primary source

Wai Yeung Lam, “Quadratic differentials and circle patterns on complex projective tori”, arXiv:1909.07258 (2020).

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