latex-pictures

 % This picture represents the relationshipt between the real, ordinal and
 % surreal numbers
 % Copyright Pablo (C) 2021
 \begin{tikzpicture}
   % The reals
   \draw (0,0) circle (1)
   (-1.5,0) node{$\mathbb{R}$};
 
   % The ordinals
   \draw (-1,0) circle (1)
   (0.5,0) node{$\mathbf{ON}$};
 
   % The surreals (+ natural numbers)
   \draw (-2.5, 1.5) rectangle (1.5,-1.5)
   (-0.5,0) node{$\mathbb{N}$}
   (1.5,-1.5) node[right]{$\mathbf{No}$};
 \end{tikzpicture}