Classification of non-CSC extremal K\"{a}hler metrics on K-surfaces $S^2_{\{\alpha\}}$ and $S^2_{\{\alpha,\beta\}}$

Abstract

We commonly refer to an extremal K\"{a}hler metric with finitely many singularities on a compact Riemann surface as an HCMU (Hessian of the Curvature of the Metric is Umbilical) metric. In this study, we specifically classify non-CSC HCMU metrics on the K-surfaces $S^2_{\{\alpha\}}$ and $S^2_{\{\alpha,\beta\}}$.