Special homogeneous curves

Abstract

We classify all special homogeneous curves. A special homogeneous curve $\mathcal{H}$ consists of connected components of the hyperbolic points in the level set $\{h=1\}$ of a homogeneous polynomial $h$ in two real variables of degree at least three, and admits a transitive group action of a subgroup $G\subset \mathrm{GL}(2)$ on $\mathcal{H}$ that acts via linear coordinate change.

7 pages, 1 figure