Research Article

An Application of Iterative Pushdown Automata to Contour Words of Balls and Truncated Balls in Hyperbolic Tessellations

Figure 4

The representation of 𝜕 𝐵 3 . (a) the pentagrid. (b) the heptagrid. In both cases, 𝑠 𝑤 3 = 𝑏 𝑤 𝑏 𝑤 𝑤 𝑏 𝑤 𝑤 .
742310.fig.004a
(a)
742310.fig.004b
(b)