OCA talk:LongLife
Revision as of 13:12, 7 December 2023 by Dvgrn (talk | contribs) (→Proof of no still lifes adapted from Gems: new section)
Omniperiodic?-wwei23 10:09AM 6/27/2017 NY time
David Eppstein's writings
Are David Eppstein's writings on LongLife available anywhere?
White whale period?
This article claims that White Whale has period, 160,000,346. The glider database claims 160,000,046. I ran this in golly and neither appears to be correct. Gzaytman (talk) 18:48, 25 November 2022 (UTC)
- I think the "hollow" pattern does evolve to a period-160000346 oscillator after 12822176 ticks. The population equals 92 at T = 114375463, 274375809, ... Below are generations T = 0 (top left), 114375463 (top right), 12822175 (bottom left), 160000346 + 12822175 (bottom right). The two patterns in the bottom row converge after one tick. Confocal (talk) 07:49, 26 November 2022 (UTC)
| T = 0 (top left), 114375463 (top right), 12822175 (bottom left), 160000346 + 12822175 (bottom right) (click above to open LifeViewer) |
- : Thanks. BTW, do you know who to contact to get the entry in Eppstien's database fixed? Gzaytman (talk) 18:37, 26 November 2022 (UTC)
- I made a post here: https://conwaylife.com/forums/viewtopic.php?p=154150#p154150 Confocal (talk) 19:19, 26 November 2022 (UTC)
Proof of no still lifes adapted from Gems
Couldn't the recently added and removed proof be adapted to work for LongLife, quite easily?
I'm not sure exactly what the objection was, but this part
it must have at least 5 alive neighbours; the only possibility is that the alive neighbours are the cell to the right of C and three neighbouring cells in the next row...
wasn't changed enough from the Gems version. It would need exactly 5 neighbors, and only four of them can possibly be to the right or below the cell marked "x". At least one cell must be left of the "x", contradicting the assumption. Dvgrn (talk) 13:12, 7 December 2023 (UTC)