## Thread for basic non-CGOL questions

For discussion of other cellular automata.
wildmyron
Posts: 1419
Joined: August 9th, 2013, 12:45 am

### Re: Thread for basic non-CGOL questions

gameoflifemaniac wrote:Is there a pattern other than the dot, domino or other symmetric patterns that can't be a spaceship in any non-totalistic rule?
Presuming that your question is about isotropic non-totalistic rules, then calcyman answered this question conclusively, and in the affirmative, here. There was some further discussion around the topic (restricted to isotropic rules without B0) in that thread as well.
muzik wrote:Any pattern can be a spaceship in some non-isotropic rules, which are non-totalistic.
I'm pretty sure gameoflifemaniac is referring to isotropic, non-totalistic rules, where the dot and domino cannot be a spaceship.
Saka wrote:
muzik wrote:Any pattern can be a spaceship in some non-isotropic rules, which are non-totalistic.

Code: Select all

x = 93, y = 81, rule = B/S01234678
obobobobo2bo$2o3bo2bobobobo2bo2bo!  BlinkerSpawn Posts: 1969 Joined: November 8th, 2014, 8:48 pm Location: Getting a snacker from R-Bee's ### Re: Thread for basic non-CGOL questions muzik wrote:Are (1,1)c/2 diagonal spaceships with 3 cells possible in range-1 2-state isotropic rules without B0? And on that subject, (2,2)c/4? I think this is the smallest possible (1,1)c/2 ship: Code: Select all x = 3, y = 3, rule = B1e2c3a5k6c/S01e4i obo$o$b2o!  LifeWiki: Like Wikipedia but with more spaceships. [citation needed] muzik Posts: 3904 Joined: January 28th, 2016, 2:47 pm Location: Scotland ### Re: Thread for basic non-CGOL questions BlinkerSpawn wrote: muzik wrote:Are (1,1)c/2 diagonal spaceships with 3 cells possible in range-1 2-state isotropic rules without B0? And on that subject, (2,2)c/4? I think this is the smallest possible (1,1)c/2 ship: Code: Select all x = 3, y = 3, rule = B1e2c3a5k6c/S01e4i obo$o$b2o!  ...which can be easily be disproved by the example from the 5s project: Code: Select all x = 3, y = 4, rule = B2ac/S1 2bo2$b2o$o! Bored of using the Moore neighbourhood for everything? Introducing the Range-2 von Neumann isotropic non-totalistic rulespace! A for awesome Posts: 2077 Joined: September 13th, 2014, 5:36 pm Location: Pembina University, Home of the Gliders Contact: ### Re: Thread for basic non-CGOL questions BlinkerSpawn wrote: muzik wrote:Are (1,1)c/2 diagonal spaceships with 3 cells possible in range-1 2-state isotropic rules without B0? And on that subject, (2,2)c/4? I think this is the smallest possible (1,1)c/2 ship: Code: Select all x = 3, y = 3, rule = B1e2c3a5k6c/S01e4i obo$o$b2o!  If you're measuring by bounding box, yes. If you're measuring by population, then no, 4-cell ones are possible: Code: Select all x = 4, y = 3, rule = B2-e/S1 3bo$2bo$obo!  I have a mental outline of a proof that 3-cell c/2 diagonal ships of any period are impossible, but I don't know that I'll get around to finishing it and posting it — in any case, there are probably many ways of tackling the problem, so nobody should let me stop them from trying. praosylen#5847 (Discord) x₁=ηx V*_η=c²√(Λη) K=(Λu²)/2 Pₐ=1−1/(∫^∞_t₀(p(t)ˡ⁽ᵗ⁾)dt) $$x_1=\eta x$$ $$V^*_\eta=c^2\sqrt{\Lambda\eta}$$ $$K=\frac{\Lambda u^2}2$$ $$P_a=1-\frac1{\int^\infty_{t_0}p(t)^{l(t)}dt}$$ Rhombic Posts: 1064 Joined: June 1st, 2013, 5:41 pm ### Re: Thread for basic non-CGOL questions growing spaceship, moving wick-stretcher? Code: Select all x = 16, y = 35, rule = B2ein3acir4einqtyz5aq6ain7e/S1c2-an3iqry4n5inqry6kn7e8 13b3o$13bobo2$11bo$12bo$11b2o$10bobo$11bo$10b2o$9bobo$10bo$9b2o$8bobo$9bo$8b2o$7bobo$8bo$7b2o$6bobo$7bo$6b2o$5bobo$6bo$5b2o$4bobo$5bo$4b2o$3bobo$4bo$3b2o$2bobo$3bo$b3o$ob2o$3o!

SoL : FreeElectronics : DeadlyEnemies : 6a-ite : Rule X3VI
what is “sesame oil”?

gameoflifemaniac
Posts: 1117
Joined: January 22nd, 2017, 11:17 am
Location: There too

### Re: Thread for basic non-CGOL questions

gameoflifemaniac wrote:Is the number of possible non-totalistic rules equal to the number of non-totalistic rules writable using Alan Hensels notation?
I was so socially awkward in the past and it will haunt me for my entire life.

Code: Select all

x = 21, y = 5, rule = B3/S23
b2o2bo2b2o2b2o2bobobo$o3bobobobobobobobobo$bo2bobob2o2b2o3bo2bo$2bobob obobobobo2bo$2o3bo2bobobobo2bo2bo!


wildmyron
Posts: 1419
Joined: August 9th, 2013, 12:45 am

### Re: Thread for basic non-CGOL questions

gameoflifemaniac wrote:Is the number of possible non-totalistic rules equal to the number of non-totalistic rules writable using Alan Hensels notation?
No. Hensel notation is used to specify isotropic rules only. The wiki page on Non-totalistic_Life-like_cellular_automaton is confusing on that point because it seems to have started out as a description of the isotropic rulespace and then morphed into a broader description of non-totalistic CA. It also seems wrong to me to describe anything non-totalistic as "Life like" - see Cellular_automata#Life-like_cellular_automata for the definition.
The latest version of the 5S Project contains over 226,000 spaceships. There is also a GitHub mirror of the collection. Tabulated pages up to period 160 (out of date) are available on the LifeWiki.

gameoflifemaniac
Posts: 1117
Joined: January 22nd, 2017, 11:17 am
Location: There too

### Re: Thread for basic non-CGOL questions

gameoflifemaniac wrote:
gameoflifemaniac wrote:Is the number of possible non-totalistic rules equal to the number of non-totalistic rules writable using Alan Hensels notation?
Oops... I meant 'Is the number of possible isotropic rules equal to the number of non-totalistic rules writable using Alan Hensels notation?'
I was so socially awkward in the past and it will haunt me for my entire life.

Code: Select all

x = 21, y = 5, rule = B3/S23
b2o2bo2b2o2b2o2bobobo$o3bobobobobobobobobo$bo2bobob2o2b2o3bo2bo$2bobob obobobobo2bo$2o3bo2bobobobo2bo2bo!


wildmyron
Posts: 1419
Joined: August 9th, 2013, 12:45 am

### Re: Thread for basic non-CGOL questions

gameoflifemaniac wrote:
gameoflifemaniac wrote:Is the number of possible non-totalistic rules equal to the number of non-totalistic rules writable using Alan Hensels notation?
Oops... I meant 'Is the number of possible isotropic rules equal to the number of non-totalistic rules writable using Alan Hensels notation?'
Yes
The latest version of the 5S Project contains over 226,000 spaceships. There is also a GitHub mirror of the collection. Tabulated pages up to period 160 (out of date) are available on the LifeWiki.

Macbi
Posts: 750
Joined: March 29th, 2009, 4:58 am

### Re: Thread for basic non-CGOL questions

Only assuming you're using the "canonical form".

Also, it's a bit weird to ask if there are the same number. It's more important to know that each of them is expressed exactly once (which is also true).

gameoflifemaniac
Posts: 1117
Joined: January 22nd, 2017, 11:17 am
Location: There too

### Re: Thread for basic non-CGOL questions

Is this spaceship known?

Code: Select all

x = 4, y = 5, rule = B34/S34
4o$3bo$o2bo$b3o$bo!

I was so socially awkward in the past and it will haunt me for my entire life.

Code: Select all

x = 21, y = 5, rule = B3/S23
b2o2bo2b2o2b2o2bobobo$o3bobobobobobobobobo$bo2bobob2o2b2o3bo2bo$2bobob obobobobo2bo$2o3bo2bobobobo2bo2bo!


Posts: 1969
Joined: November 8th, 2014, 8:48 pm
Location: Getting a snacker from R-Bee's

### Re: Thread for basic non-CGOL questions

gameoflifemaniac wrote:Is this spaceship known?

Code: Select all

x = 4, y = 5, rule = B34/S34
4o$3bo$o2bo$b3o$bo!

It's the second pattern under "c/3 orthogonal spaceships" in Niemiec's collection for 3/4 Life, known no later than 19 Feb 2015.
LifeWiki: Like Wikipedia but with more spaceships. [citation needed]

muzik
Posts: 3904
Joined: January 28th, 2016, 2:47 pm
Location: Scotland

### Re: Thread for basic non-CGOL questions

Can this be a tagalong for any spaceships in Life-related rules?

Code: Select all

x = 4, y = 4, rule = B3/S23
2b2o$b3o2$o!

Bored of using the Moore neighbourhood for everything? Introducing the Range-2 von Neumann isotropic non-totalistic rulespace!

Bullet51
Posts: 563
Joined: July 21st, 2014, 4:35 am

### Re: Thread for basic non-CGOL questions

muzik wrote:Can this be a tagalong for any spaceships in Life-related rules?

Code: Select all

x = 4, y = 4, rule = B3/S23
2b2o$b3o2$o!

Yes.

Code: Select all

x = 24, y = 29, rule = b357s238history
18.A$5.A6.2C3.A.A$4.A.A4.3C2.5A$2.A5.A7.2A.2A$A2.5A2.C6.A.A2$13.3A5. 3A$3A5.3A2.3A5.3A2$3.A3.A$.A3.A3.A$A9.A4.2A.A.2A$15.A5.A$A2.A3.A2.A4. 2A3.2A$.A.2A.2A.A3.11A$.2A.3A.2A$A2.2A.2A2.A2.2A3.A3.2A$5.A10.A3.A$A
2.A3.A2.A2.2A.A3.A.2A$.2A5.2A4.2A.A.A.2A$3.2A.2A7.A5.A$3.A.A.A7.A.3A. A$3.5A9.3A$.A.A.A.A.A7.A.A$4.3A9.A.A.A$3.5A7.A.3A.A$.9A5.A5.A$15.A5.A$17.3A!

Still drifting.

lifeisawesome
Posts: 86
Joined: April 22nd, 2016, 1:55 pm
Location: poland

### Re: Thread for basic non-CGOL questions

Can this be turned into [s]an oblique spaceship[/s] a c/3 diagonal spaceship?

Code: Select all

x = 3, y = 3, rule = B3/S23
obo$obo$b2o!
Edit: Dang, I wish the forums had a [s] tag.
--Szymon Bartosiewicz
favorite pattern:

Code: Select all

x = 2, y = 2, rule = B25/S3a
obobobobo2bo$2o3bo2bobobobo2bo2bo!  muzik Posts: 3904 Joined: January 28th, 2016, 2:47 pm Location: Scotland ### Re: Thread for basic non-CGOL questions It could be, if you can come up with a program that runs range-2 von Neumann non-isotropic rules, preferably with an acceptable notation. Bored of using the Moore neighbourhood for everything? Introducing the Range-2 von Neumann isotropic non-totalistic rulespace! lifeisawesome Posts: 86 Joined: April 22nd, 2016, 1:55 pm Location: poland ### Re: Thread for basic non-CGOL questions Is this a billiard table? Code: Select all x = 9, y = 9, rule = B2ei3e/S bobobobo$o7bo2$o7bo2$o7bo2$o7bo$bobobobo!
--Szymon Bartosiewicz
favorite pattern:

Code: Select all

x = 2, y = 2, rule = B25/S3a
2o\$2o!