An elementary monodimensional binary cellular automaton -86- with random white starting points -on the bottom line- [Un automate cellulaire binaire monodimensionnel élémentaire -86- avec des points aléatoires de départ blancs -sur la ligne du bas-].
An elementary monodimensional binary cellular automaton -86- with random white starting points -on the bottom line- [Un automate cellulaire binaire monodimensionnel élémentaire -86- avec des points aléatoires de départ blancs -sur la ligne du bas-].
BBB = W
BBW = B
BWB = W
BWW = B
WBB = W
WBW = B
WWB = B
WWW = W
with, for example, "BWW = B" meaning:
if ((CELL(x-1,t)==Black)&&(CELL(x,t)==White)&&(CELL(x+1,t)==White)) then CELL(x,t+1)=BlackThis cellular automaton is called 86. As a matter of fact, when concatenating the right-hand sides of the preceding rules one obtains:
-------- --------
WBWBWBBW = 10101001 = 01010110
and the binary number 01010110 equals the decimal number 86 (for 86=64+16+4+2).
It can be displayed as the following cubes:
WWB=B---------------WWW=W B-------------------W
/. /| /. /|
/ . / | / . / |
/ . / | / . / |
/ . / | / . / |
/ . / | / . / |
WBB=W---------------WBW=B | W-------------------B |
| . | | | . | |
| . | | | . | |
| . | | | . | |
| BWB=W...........|...BWW=B | W.............|.....B
| . | / | . | /
| . | / | . | /
^ | . | / | . | /
Y | Z | . | / | . | /
| / |. |/ |. |/
|/ BBB=W---------------BBW=B W-------------------B
O---->
X
the 'X', 'Y' and 'Z' axes being respectively the 'Right', 'Left' and 'Current' axes.
and 
).