Search found 782 matches

by Macbi
January 4th, 2021, 3:13 am
Forum: Other Cellular Automata
Topic: OCA DOTY 2020
Replies: 21
Views: 1035

Re: OCA DOTY 2020

Also nominating new adjustable ship such as 3-cell adjustables (Macbi, https://discord.com/channels/357922255553953794/370571046971244545/740928470900539512 ) Link here . Can I add to that, or nominate separately, my 3-cell adjustable oscillators ? They seem more notable to me because they were lon...
by Macbi
January 2nd, 2021, 10:36 am
Forum: Other Cellular Automata
Topic: Rules with small adjustable spaceships
Replies: 136
Views: 70466

Re: Rules with small adjustable spaceships

Here are the two adjustable ships with just 3 cells (the smallest possible population) that I discovered in August 2020 and posted on the Discord but not here until now. (Posting since lemon41625 wanted to nominate them for DOTY.) x = 10, y = 1, rule = B2ce3kry4ackqry5ciry6ack/S02-c3-akqr4-ajnqy5aej...
by Macbi
December 30th, 2020, 4:28 pm
Forum: General Discussion
Topic: Thread for basic questions
Replies: 2383
Views: 679379

Re: Thread for basic questions

dvgrn wrote:
December 30th, 2020, 9:43 am
But single or double cells turning on in width-2 chicken wire start an uncontrollable implosion -- traveling at lightspeed against the grain and 2c/3 with the grain.
I make it more like 4c/5.
Screenshot_20201230_192736.png
Screenshot_20201230_192736.png (127.31 KiB) Viewed 650 times
by Macbi
December 30th, 2020, 7:13 am
Forum: Other Cellular Automata
Topic: Smallest Oscillators Supporting Specific Periods
Replies: 194
Views: 68458

Re: Smallest Oscillators Supporting Specific Periods

is there a collection for this?(but not right there hiding in google drive. Github mirror?) Following up on this request https://conwaylife.com/forums/viewtopic.php?p=117198#p117198 Can someone please grab the current SOSSP file from https://drive.google.com/file/d/1axyhEnJU4_E0TNkpt8HXIy7PAKdaUJkx...
by Macbi
December 29th, 2020, 8:41 am
Forum: Other Cellular Automata
Topic: Rules Supporting Specific Smallest Still Life
Replies: 18
Views: 813

Re: Rules Supporting Specific Smallest Still Life

What are the rules here?
by Macbi
December 28th, 2020, 5:10 am
Forum: General Discussion
Topic: Thread for basic questions
Replies: 2383
Views: 679379

Re: Thread for basic questions

Diagonal ships can't exist in the zebra stripes agar, because any pattern that moves in the direction of the stripes necessarily causes a signal to travel through them orthogonally at lightspeed. They could well exist in other agars. Thanks! I guess this rules out oscillators in the agar too. It do...
by Macbi
December 28th, 2020, 4:29 am
Forum: General Discussion
Topic: Thread for basic questions
Replies: 2383
Views: 679379

Re: Thread for basic questions

How hard would it be to find a diagonally moving negative spaceship in the zebra stripes agar or one moving in a different agar? Edit: To clarify, by the one in a different agar, I mean one that moves along the same symmetry of the agar itself, like orthogonal in a chicken wire agar or diagonal in ...
by Macbi
December 7th, 2020, 5:04 am
Forum: Other Cellular Automata
Topic: Smallest Spaceships Supporting Specific Speeds (5s) Project
Replies: 993
Views: 257297

Re: Smallest Spaceships Supporting Specific Speeds (5s) Project

I can update scripts to Python 3 if you post them here.
by Macbi
November 30th, 2020, 3:44 pm
Forum: Scripts
Topic: Logic Life Search
Replies: 215
Views: 97136

Re: Logic Life Search

Another question, mostly for Macbi, and maybe this has been discussed before. Has anyone implemented a SAT approach for a Bellman-like search? I don't know the Bellman algorithm, but I can see how SAT would be a great way to express a still-life region combined with a more variable region represent...
by Macbi
November 29th, 2020, 4:05 pm
Forum: General Discussion
Topic: Thread for basic questions
Replies: 2383
Views: 679379

Re: Thread for basic questions

Are there any metacells or any other method of emulating Margolus rules in CGoL? 0E0Ps or OTCAs running 2x2. Ok, well I know that . I even just accidentally made a B1 rule that can emulate a Margolus rule (B12347/S123458). Let me rephrase my question then: Are there any metacells or any other metho...
by Macbi
November 28th, 2020, 7:37 am
Forum: Scripts
Topic: Logic Life Search
Replies: 215
Views: 97136

Re: Logic Life Search

I just installed Logic Life Search and I've been trying it out on examples and other things I can come up with in regular life. Is there a way to search on hexagonal rules? I don't really understand the rule format at this point. If it is possible to enter a non-isotropic Moore neighborhood rule, I...
by Macbi
November 25th, 2020, 8:38 am
Forum: Other Cellular Automata
Topic: Thread for basic non-CGOL questions
Replies: 442
Views: 144565

Re: Thread for basic non-CGOL questions

c√2 ship? How is that possible? Because they're measuring in the 2-norm rather than the standard ∞-norm. What do you mean? For example, consider the distance between the points with coordinates (0,0) and (3,4). In the usual Euclidean geometry we would find the distance between them using Pythagoras...
by Macbi
November 25th, 2020, 5:39 am
Forum: Other Cellular Automata
Topic: Thread for basic non-CGOL questions
Replies: 442
Views: 144565

Re: Thread for basic non-CGOL questions

Hunting wrote:
November 25th, 2020, 1:29 am
c√2 ship? How is that possible?
Because they're measuring in the 2-norm rather than the standard ∞-norm.
by Macbi
November 20th, 2020, 4:55 am
Forum: Patterns
Topic: Thread for your unsure discoveries
Replies: 2147
Views: 1067994

Re: Thread for your unsure discoveries

the lifestroyer wrote:
November 20th, 2020, 4:52 am
Macbi wrote:
November 20th, 2020, 4:47 am
Technically the first one is only a predecessor to an oscillator.
Well is it known?
Yes, Pentadecathalon and Octagon 2.
by Macbi
November 20th, 2020, 4:47 am
Forum: Patterns
Topic: Thread for your unsure discoveries
Replies: 2147
Views: 1067994

Re: Thread for your unsure discoveries

Technically the first one is only a predecessor to an oscillator.
by Macbi
October 19th, 2020, 10:56 am
Forum: General Discussion
Topic: C/2 Diagonal?
Replies: 4
Views: 510

Re: C/2 Diagonal?

This sounds like a dumb question, but I wonder, is it possible for there to be diagonal speeds faster than c/4? Like a xWSS but diagonally. If such a thing is not possible in Conway's Life, what about other rules? Welcome to the forum! For future reference, such questions would be better suited to ...
by Macbi
October 14th, 2020, 8:02 am
Forum: General Discussion
Topic: Thread for basic questions
Replies: 2383
Views: 679379

Re: Thread for basic questions

Which post says this exactly? Also, There's not only the pre-block but also the t-tetromino, which evolves into a traffic light, and the pre-pond. It feels like there are way too many patterns to check. This one and the one below it. You're talking about what he calls 'two-cluster' patterns. There ...
by Macbi
October 14th, 2020, 7:29 am
Forum: General Discussion
Topic: Thread for basic questions
Replies: 2383
Views: 679379

Re: Thread for basic questions

How do we know exactly that the minimum population size for infinite growth is 10 cells? Can't we just make a block (which can be trivially made smaller into a pre-block) interact with an r-pentomino to create a block-laying or glider-producing switch engine? Has this been tried before? For example...
by Macbi
October 8th, 2020, 12:13 pm
Forum: General Discussion
Topic: CGoL / CA conference
Replies: 7
Views: 762

Re: CGoL / CA conference

Timezones would be an issue. Perhaps we could have people post in advance which talks they're interested in and what their availability is. Then we could schedule the talks around that. My other thought is that I'm working full time and don't want to take lots of time off to attend a conference. You...
by Macbi
September 30th, 2020, 3:31 pm
Forum: General Discussion
Topic: Catagolue Discussion Thread
Replies: 390
Views: 143098

Re: Catagolue Discussion Thread

wwei23 wrote:
September 30th, 2020, 11:06 am
Why did Catagolue move from appspot to hatsya?
https://cp4space.hatsya.com/2020/09/29/relocation/
by Macbi
September 27th, 2020, 7:49 am
Forum: Patterns
Topic: Loafer Synthesis
Replies: 10
Views: 956

Re: Loafer Synthesis

Adding my £0.02: I like the theoretical question of whether it's possible to construct things with loafers. But doing so efficiently is a less interesting problem to me because it's unlikely to be useful in any larger construction, and we still have a lot of other kinds of Optimization Game that act...
by Macbi
September 19th, 2020, 3:07 pm
Forum: Patterns
Topic: Binary slow salvos
Replies: 123
Views: 14339

Re: Binary slow salvos

Ordinary universal constructors take polynomial time as a function of the recipe length. The RCT is in a class of its own, taking exponential time as a function of the recipe length. But with HashLife we should be back down to linear time as a function of recipe length. So maybe Golly could run it ...
by Macbi
September 3rd, 2020, 11:45 am
Forum: Patterns
Topic: Small Spaceship Syntheses
Replies: 511
Views: 395259

Re: Small Spaceship Syntheses

This reminded me of one of my very first posts on the forum . Would this ... have any advantage? Something like this could work; unfortunately, synthesizing such a unbroken row of spaceships so close together would be difficult. The hardest part would be that the main spaceship would have to pass t...