Hyperbolic elliptic parabolic disks approximated by half distance bands

Gyula Lakos

Hyperbolic elliptic parabolic disks can be described by the inequality $\frac{x^2}{C^2}+2y^2-2y\le 0$ ($0<C<1$) in the unit disk based Beltrami--Cayley--Klein model of the hyperbol…