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Can we prove that 25P3H1V0.1 and 25P3H1V0.2 are the smallest c/3 spaceships? If you mean the smallest period-3 c/3 spaceships, this has already been shown as confocaloid noted. If you mean c/3 spaceships of any period, then we most certainly cannot prove these are the smallest. To do so would I thi...

I have confirmed using Nicolay Beluchenko's version of WLS (WLS 6.3) that 58P5H1V1 is the only p5 c/5 diagonal spaceship up to diagonal height 12. I also confirmed that there are no symmetric c/4 diagonal ships in a 17x17 bounding box and no 2c/4 even glide symmetric ships up to width 16 (not counti...

Is it two ships because they could exist as they are separately? Is it one ship because they are connected by an over-population non-birth with 4 neighbors? That's two ships forming a pseudo-spaceship . Edit: you probably shouldn't worry about filtering such objects automatically. Most of your min ...

The [c/5 orthogonal] height-8 search is still ongoing. Here are the results so far: x = 98, y = 248, rule = B3/S23 11bo7bo$5b2obobob2o3b2obobob2o$2b3obob3o9b3obob3o$2bo3bobo5bobo5bobo3b o$6b2o6bobo6b2o$3b2o9bobo9b2o$3b2ob2o15b2ob2o$7bo15bo13$11bo$5b2obobob 2o6bo5b2o5b2o5bo$2b3obob3o7bo2b2ob2o2bo3bo...

Here's a new c/5 diagonal tagalong for 86P5H1V1 that I found while searching gutter-symmetric diagonal width 31... Due to long tagalongs and partials, I won't be able to get a nice finite list of ships with WLS 6.3. I will leave another part of the search running for now because I think it still mi...

2c/4 odd to pop 32 completed very quickly with very little memory... 2c/4 even to pop 48 is out of range (max is 4x9-1 = 35). c/3 odd to pop 52 finished pretty quickly Thanks! If you find the time, I would appreciate if you could run the searches up to period 4 that are likely to complete quickly (...

Here's a new c/5 diagonal tagalong for 86P5H1V1 that I found while searching gutter-symmetric diagonal width 31: x = 52, y = 52, rule = B3/S23 9b3o$8bo$7bo$11b2o$8b2obo$14b3o$11bo2b2o2b2o$2bo8b2obo3b2o$bo2bo6bo2b 2o$o3bo$o11bo2bo$o2b2ob3o3bo3b2ob2o$3bo3bo2b2o2bo2bo7bo$17b2o2bo3b2o$ 5b4o3bo5bo3bobob3...

I have confirmed using Nicolay Beluchenko's version of WLS (WLS 6.3) that 67P5H1V1 is the only p5 c/5 diagonal spaceship up to diagonal width 16 (the ship itself has diagonal width 15). That's not too surprising since it seems like a width-16 ship would have already been found by ikpx2 if it existed...

I manually decreased the bounding box area by 16 and increased the lifetime by 1.... I increased the lifespan by 1 without increasing the population. x = 19, y = 15, ... It bothers me slightly that you didn't apply some of those bounding box reductions in the second case: x = 19, y = 13, rule = B3/...

Unfortunately the current exhaustive population search absolutely does not work once you have enough population to make two separate ships. To make sure I'm understanding this correctly in the symmetric case, does that mean the search breaks down once you have enough population for just one ship on...

As an example I think the c/3 gutter bound of 50 is not know to be exhaustive. We know there are no 49 cell gutter ships from the census I did up to 49 but there could I believe still be other pop 50 gutter ships. On this note, the only known 50-cell c/3 gutter "ships" are actually just two 25-cell...

New rules:

1. Only memes about cellular automata are allowed.
2. No memes about other users.

I've just now remembered that I had a question about the table. Some of these are known unique (or exhaustive in the more general case) and some I think are not. As an example I think the c/3 gutter bound of 50 is not know to be exhaustive. We know there are no 49 cell gutter ships from the census ...

I have confirmed using Nicolay Beluchenko's version of WLS (WLS 6.3) that 67P5H1V1 is the only p5 c/5 diagonal spaceships of diagonal width 15. The next thinnest known p5 c/5 diagonal spaceship appears to be this width-19 ship found by Adam P. Goucher: x = 65, y = 58, rule = B3/S23 5b3o$4bo3b2o$3b2o...

Could this method be used to find the smallest completion to a partial result, or is it fundamentally limited to searching the whole space? Theoretically maybe, practically probably not. Maybe for very small completions and/or for very friendly geometries (like c/2 or c/3). It would primarily be us...

I have confirmed using Nicolay Beluchenko's version of WLS (WLS 6.3) that the following are the only two symmetric p5 c/5 diagonal spaceships of diagonal width 27: x = 78, y = 38, rule = B3/S23 9b3o38b3o$8bo40bo$7bo40bo$11b2o39b2o$8b2obo37b2obo$14b3o$11bo2b2o2b2o 31bo4bo$2bo8b2obo3b2o31b6o$bo2bo6bo2...

given that we have stabilised the corder engine, why can we not stabilise the pi engine? Such a spaceship would have a period greater than 10. If we allow ships that are not the minimum period, then we already have all orthogonal and diagonal speeds (see Speed Orthogonoid and Speed Demonoid ). slow...

Just curious, are we more likely to find a spaceship with speed: c/8o, c/9o, c/9d, 3c/10o, c/7k, c/8c? Note that c/7k and c/8c are very non-standard. You should rather write (2,1)c/7 and (3,1)c/8. This is a very hard question to answer. Without knowing anything else I would say lower period is more...

I object to those posts, replies, edit summaries where dvgrn puts themselves above the dispute, without honestly acknowledging that they're an involved party in this disagreement on the wiki content. Your idea that editors should not act as moderators in disputes in which they have been involved is...

I would appreciate it, if dvgrn... left any future administrative actions in this dispute for some other moderator or other moderators. This simply isn't a big enough community to be able to swap out moderators when there is a dispute. I for one have been too busy lately to do much moderation. I wi...

RT114 B-G Nice find, although it is a rediscovery (first posted here ). The top B-to-G is included in the elementary conduits collection, but I don't think the extension was ever included because it technically isn't a B-to-B, so there was nowhere to put it. It might be worth revisiting that decisi...

I used WLS to prove that there are no glide symmetric c/6 diagonal spaceships of diagonal width 24. This means that the following ship has minimal width among glide symmetric c/6 diagonal ships: x = 67, y = 68, rule = B3/S23 3o$3bo$o2bo$4bo$2b2o$5b2o7bo$5b3ob3ob3o$6bob2o6bob2o$6bo3bob4obo$9bo5b o4bo...

AlbertArmStain wrote: ↑

November 22nd, 2023, 4:05 pm

a filter I don't see in JSlife-moving

Interesting. Did you find this just now?

Thank you very much for this, I have added a table on the wiki with your results, LifeWiki:Spaceship Search Status Page#Known_spaceships_by_population .... I imagine the time for your proof of 37P4H1V0 's minimality and uniqueness could also prove or disprove that of non-monotonic spaceship 1 . The...

Haycat2009 wrote: ↑

November 23rd, 2023, 2:22 am

Honestly, you should try this to search for the minimum population of a c/8 ship.

Earlier in this thread, Amling said that the search couldn't even complete a c/7 orthogonal search beyond 3 cells. A c/8 search would be even less effective.