toying with the single rotation rule reversible CA; not only does it have gliders, it also has isolators and "electrons" which move along them. http://dmishin.blogspot.com/2013/11/the-single-rotation-rule-remarkably.html …pic.twitter.com/QdJ0Soug8s
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apparently it was shown in 1977 that any irreversible d-dimensional cellular automaton rule can be turned into a reversible (d + 1)-dimensional rule. so many features of irreversible CA, such as ability to simulate Turing machines, can be extended to reversible CA.
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another ruleset for a reversible cellular automaton, the "billiard ball machine". while the rules are fairly simple, which is why i initially dismissed them as boring, one gets interesting behavior inside obstacle courses:pic.twitter.com/PMUVq4jvcy
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here for example is a (fairly useless) XOR circuit implemented in the BBM-CA.pic.twitter.com/XKUxfGTfGv
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found another reversible CA called "Double Rotation Rule" which is good for uh...pic.twitter.com/BogYgsMcoK
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I forget if we've ever chatted about Billiard Ball computers (and CA simulations therof)?
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probably did not. the CA sim i'm using has a mode called "Billiard Ball" http://dmishin.github.io/js-revca/index.html?rule=0,2,8,3,1,5,6,7,4,9,10,11,12,13,14,15&rle_x0=17&rle_y0=7&rle=2o2$2o&step=8&frame_delay=50&size=64x64&cell_size=4,0&phase=0 …
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I'm so happy this rule is getting attention again! I've dumped many hours into playing with it, and I think it is my favorite CA rule (and I've known a lot)
Hvala. Twitter će to iskoristiti za poboljšanje vaše vremenske crte. PoništiPoništi
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