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tiling by B-bar gliders at -6 in 12 generations

Figure 2.20: B-bar gliders have the same velocity as B gliders, but take three times as long to develop their cycle; however the two types, B and B-bar, may coexist.
\put(0,0){\epsfxsize = 300pt \epsffile{nakedBbar.eps}} %-------------

Figure 2.21: B-bar gliders can have varying widths and one or the other of two optional right margins. At least one midsection must be included.
\put(0,0){\epsfxsize = 250pt \epsffile{clothedBbar.eps}} %-------------

Jose Manuel Gomez Soto 2002-01-31