Talk:Life without Death

A fact from Life without Death appeared on Wikipedia's Main Page in the Did you know column on 13 June 2009 (check views). The text of the entry was as follows:

Did you know... that the Life without Death cellular automaton, a mathematical model of pattern formation, is a variant of Conway's Game of Life in which cells, once brought to life, never die?

A record of the entry may be seen at Wikipedia:Recent additions/2009/June.

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Faster ladders

When I wrote in the article "The most common ladder pattern advances one cell every three generations", it was because I was unsure whether there were any other speeds, rather than because I knew there were others. But now I know: there is also a 4c/9 ladder. See http://11011110.livejournal.com/174137.html for details. I'm not sure this counts as a reliable source, and anyway it would be too self-serving, so I haven't added this to the article. —David Eppstein (talk) 10:43, 7 June 2009 (UTC)[reply]

Here's an animation to show that in action. --Simpsons contributor (talk) 17:11, 11 June 2009 (UTC)[reply]

I replaced the image you originally linked here with the other image you made showing this pattern. The 2c/3 parasitic shoot doesn't really count as a ladder because it can't grow on its own. —David Eppstein (talk) 22:40, 12 June 2009 (UTC)[reply]

PS I have since added a mention of these other ladder speeds to the article, since it would no longer be self-serving to do so: I learned that they were discovered earlier by Dean Hickerson. —David Eppstein (talk) 17:36, 19 June 2009 (UTC)[reply]

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