Dimension conjecture for discrete holomorphic quadratic differentials

About 7 years old · traced to

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

dim⁡CQC(cr⁡)={∣V∣+1if g=1,∣V∣+6g−6if g≥2,\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

dim⁡RQR(cr⁡)=6g−6if g≥2.\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.

References

Primary source

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

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.