latex-pictures

 % This picture represents the Poincaré disc model of the hyperbolic plane
 % Copyright Pablo (C) 2021
 \begin{tikzpicture}
   % The disk
   \draw (0, 0) circle (1);
 
   % A strait line in the hyperbolic plane
   \begin{scope}
     \clip (0, 0) circle (1);
     \draw (1, 1) circle (1);
   \end{scope}
 
   % The intersection of the strait line with infinity
   \fill (0, 1) circle (1pt);
   \fill (1, 0) circle (1pt);
 \end{tikzpicture}