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Although glider collisions and puffer trains are not the real province of de Bruijn diagrams, some information can occasionally be gleaned from the diagrams. For instance ``black hole'' configurations are often interpretable as collisions. Just manually adjusting the coexistence of A and B gliders, it looks like they should begin to collide in the generation-9 de Bruijn diagrams. These are still within computational limits, being 16 times as big as the generation-7 diagrams, but will involve millions of nodes.
However, two kinds of collision are easily described, and are discussed below. Besides the A - B collisions and the A - C collision converting into an F, there is the whole class of collisions by which B gliders extend the E or G gliders, but which has already been incorporated in the foregoing analysis. For A collisions, we can make the following table:
Table 3.2:
Collisions between right moving A's and others.
target |
result |
B |
null |
C1 |
F |
C2 |
C1 |
C3 |
C2 |
D1 |
C2 |
D2 |
D1 |
E1 |
D1 |
E2 |
E1 |
E3 |
C2 |
F |
EBar |
|
Similarly, a table can be constructed for B collisions:
Table 3.3:
Collisions between left moving B gliders and others.
target |
result |
A |
null |
C1 |
C2 |
C2 |
D1 |
C3 |
E1 |
D1 |
E1 |
D2 |
EBar + A |
E(n) |
E(n+1) |
F |
varied |
|
Besides simple encounters, there is a multitude of collisions between glider polymers, and still more between closely spaced groups of polymers.
Next: the A - B
Up: Glider Collisions
Previous: maps of collision chains
Example user SuSE Linux 6.2
2000-05-19