Search found 488 matches

by pcallahan
January 28th, 2020, 6:29 pm
Forum: General Discussion
Topic: Realizing still life constraints as a planar tiling
Replies: 110
Views: 48710

Re: Realizing still life constraints as a planar tiling

(skipping over the recent posting) I like the split dots better. With the petals, it isn't entirely obvious which quadrants are contributing. The split dots show that orthogonally, it takes two tiles to contribute, but only one diagonally. I agree that it's a more faithful rendering of the neighbor...
by pcallahan
January 28th, 2020, 3:24 pm
Forum: General Discussion
Topic: Realizing still life constraints as a planar tiling
Replies: 110
Views: 48710

Re: Realizing still life constraints as a planar tiling

Revisiting the tiles (e.g. here ) I noticed that there is another way to get symmetry besides octagons, which increases symmetry and I think results in more intuitive tiles as well, since the Moore neighborhood is not really an octagon. If we continue to treat cells as squares and count neighbors by...
by pcallahan
January 28th, 2020, 2:12 pm
Forum: The Sandbox
Topic: Random posts
Replies: 4090
Views: 452920

Re: CBlocks usage

Moosey wrote:
January 28th, 2020, 1:59 pm
A CA-like program made by will stevens, whose website is here:
http://www.srm.org.uk/home.html

You can download it for windows as CBlocksWin here
Cool, thanks! (Now will I ever have time for it? Answer, probably not.)
by pcallahan
January 28th, 2020, 1:58 pm
Forum: The Sandbox
Topic: Random posts
Replies: 4090
Views: 452920

Re: CBlocks usage

Moosey wrote:
January 28th, 2020, 9:57 am
Cblocks is fun
I made a gun for the infinitely fast "ship"
Anyone have a replicator file
What is Cblocks? (Real question. It sounds interesting.)
by pcallahan
January 27th, 2020, 4:31 pm
Forum: The Sandbox
Topic: cellular automata according to Max Planck
Replies: 216
Views: 9992

Re: cellular automata according to Max Planck

[tries unsuccessfully to make himself look smart--the bold words are a dead giveaway of that intent. Also apparently doesn't think we know what complex numbers are] While you Hilbert worshippers and Conway addicts are still stuck with more ore or less ordinary natural numbers. I don't know about yo...
by pcallahan
January 27th, 2020, 12:48 am
Forum: General Discussion
Topic: Tiling with placement rules for still life and p2 oscillators
Replies: 4
Views: 1494

Re: Tiling with placement rules for still life and p2 oscillators

Bridging the gap between visual placement rules and a pure tiling, we can replace the petals with toothed octagons, like the original tiling. In this case, any black octagon in a still life must have 2 or 3 teeth, and any white octagon must not have exactly 3 dents. Like the previous example, we can...
by pcallahan
January 26th, 2020, 3:06 pm
Forum: The Sandbox
Topic: Low-tech universal computing
Replies: 22
Views: 2555

Re: Low-tech universal computing

An inkjet printer, some scrap cardboard for backing, some scissors and glue. Add to the mix hours of obsessive behavior by a man who graduated kindergarten nearly a half century ago. And we get... Game of Life unplugged! 20200126_104250.jpg Using the six tiles (previous post and others) the neighbor...
by pcallahan
January 26th, 2020, 1:01 pm
Forum: The Sandbox
Topic: cellular automata according to Max Planck
Replies: 216
Views: 9992

Re: cellular automata according to Max Planck

rule 30 meditation : https://youtu.be/IK7nBOLYzdE You don't even need a 2-dimensional grid of cells to produce such patterns. A simple 1-dimensional straight line of intervals is enough. Instead of cellular automata you get linear automata . The rule 30 part, yes. The application of CGOL rules does...
by pcallahan
January 26th, 2020, 12:55 pm
Forum: The Sandbox
Topic: cellular automata according to Max Planck
Replies: 216
Views: 9992

Re: cellular automata according to Max Planck

one of the three pulsar phases is four ships bound by fire rule 30 meditation : https://youtu.be/IK7nBOLYzdE Is there a way to set that up in Golly for a longer run? What I wonder is how far the CGOL border area continues to expand upward, ignoring free gliders and spaceships. It seems like once it...
by pcallahan
January 25th, 2020, 11:11 pm
Forum: General Discussion
Topic: Tiling with placement rules for still life and p2 oscillators
Replies: 4
Views: 1494

Tiling with placement rules for still life and p2 oscillators

I'm starting a new thread to consolidate my posts on other threads and provide nicer pictures than before, which I made using python and imagemagick . (Scripts are added at the end.) This follows up on the complicated still life tiling based on octagons by observing that you can reduce the number of...
by pcallahan
January 25th, 2020, 3:54 pm
Forum: The Sandbox
Topic: Low-tech universal computing
Replies: 22
Views: 2555

Re: Low-tech universal computing

Streamlining my process a bit, I am now able to make these tiles using imagemagick , which is a lot more flexible than the old netpbm commands I was using. I haven't added jigsaw contours, but there's nothing stopping me, just more work to do. tiling.png Here's a python script to generate a big imag...
by pcallahan
January 25th, 2020, 2:52 pm
Forum: The Sandbox
Topic: cellular automata according to Max Planck
Replies: 216
Views: 9992

Re: cellular automata according to Max Planck

KT helped me to remain a composer and to survive the madhouse we're all living in since music is my life and the only reason of my existence. The only famous musician I can think of on record discussing CGOL is Brian Eno, who apparently spent months playing with the Life display at the Exploratoriu...
by pcallahan
January 25th, 2020, 12:31 pm
Forum: The Sandbox
Topic: cellular automata according to Max Planck
Replies: 216
Views: 9992

Re: cellular automata according to Max Planck

not cryptic THEY "catagolue"/observe the ash when the fire is more important. I sort of agree with this. You study the ash because it stands still for you, but I have also wondered what you can find in the active parts of soups. See https://www.conwaylife.com/forums/viewtopic.php?f=7&t=3883&p=73552...
by pcallahan
January 24th, 2020, 9:30 pm
Forum: The Sandbox
Topic: cellular automata according to Max Planck
Replies: 216
Views: 9992

Re: cellular automata according to Max Planck

For Pete's sake:

Code: Select all

.o.
..o
ooo
It's an actual glider phase. Try it!
by pcallahan
January 24th, 2020, 3:41 pm
Forum: The Sandbox
Topic: Random posts
Replies: 4090
Views: 452920

Re: Random posts

Is January 27 celebrated as "e day" outside the US? I.e. written as 27/1

We will have to wait until January 27, 8281 to celebrate it properly. :? Better get working on cryonics.

Or rotate your calendar 90° counterclockwise on New Years and pretend it's i day.
by pcallahan
January 24th, 2020, 3:35 pm
Forum: General Discussion
Topic: Unproven conjectures
Replies: 86
Views: 40174

Re: Unproven conjectures

A philosophical question... If a still life only has itself as a predecessor, clearly it is its only father, its only grandfather, its only great-grandfather and so on. Does that mean that it would be a Garden of Eden, by induction? No; a still life is its own predecessor and therefore has a predec...
by pcallahan
January 24th, 2020, 2:42 pm
Forum: The Sandbox
Topic: Unproven conjectures
Replies: 13
Views: 521

Re: Unproven conjectures

Well, "unproven conjectures" means conjectures about CGOL and this is backed up by the first post: Are there any interesting unproven conjectures in the Game of Life? So I think it is off-topic unless it is at least about cellular automata. (Never mind, I just followed Moosey's "this" link and I agr...
by pcallahan
January 24th, 2020, 1:06 pm
Forum: The Sandbox
Topic: Anyone know of highschool camps?
Replies: 5
Views: 229

Re: Anyone know of highschool camps?

In fact, an idea that started to gel in my head about 6 years ago might be described as "extra nerdy maker camp." It would involve 3D printing like other maker camps and perhaps other automated manufacturing tools like CNC cutters, but would focus on making objects to represent mathematics (polyhedr...
by pcallahan
January 24th, 2020, 1:04 pm
Forum: The Sandbox
Topic: Unproven conjectures
Replies: 13
Views: 521

Re: Unproven conjectures

Moosey wrote:
January 24th, 2020, 12:53 pm
I meant goodstein
Your misspelling got the whole thread demoted to Sandbox. Shame on you! :D
by pcallahan
January 24th, 2020, 12:50 pm
Forum: The Sandbox
Topic: Anyone know of highschool camps?
Replies: 5
Views: 229

Re: Anyone know of highschool camps?

They don't tell-- it was probably because I couldn't do well on a phone interview. There are probably a lot of applicants and a very low acceptance rate, not that you need me to tell you this. Don't sweat it, anyhow. It sounds more general than cellular automata https://education.wolfram.com/summer...
by pcallahan
January 24th, 2020, 12:17 am
Forum: The Sandbox
Topic: Anyone know of highschool camps?
Replies: 5
Views: 229

Re: Anyone know of highschool camps?

So, as a highschool student, I am curious whether anyone knows about any CA-related summer camps for high-schoolers. I have recently looked at the Wolfram Camp but I was unfortunately rejected. So, does anyone know of any summer camps for high-schoolers where CA would be a highly relevant topic? I ...
by pcallahan
January 23rd, 2020, 12:32 am
Forum: General Discussion
Topic: Thread for basic questions
Replies: 1814
Views: 484360

Re: Thread for basic questions

New post so I can add three new images. This is a different coloring that simplifies the rules a bit on alternating cells. Whether the alternating cell is red or blue, there must always be 3 white strokes and must never be 2 or 3 black strokes. I'm not sure if helps that much visually, but it might ...
by pcallahan
January 22nd, 2020, 5:01 pm
Forum: General Discussion
Topic: Thread for basic questions
Replies: 1814
Views: 484360

Re: Thread for basic questions

Would be interesting to even treat it as a game, competative or solo — you get points for building oscillators. Some sort of scoring based on rotor size, tile rarity, etc. Speaking of which, do you have any stats on how common the various tiles are? I am thinking about it as a game or puzzle, but i...
by pcallahan
January 22nd, 2020, 3:43 pm
Forum: General Discussion
Topic: Thread for basic questions
Replies: 1814
Views: 484360

Re: Thread for basic questions

It's unclear if this is at all practical, but here are 70 tiles for period-2 patterns, treating rotations as equivalent but without eliminating any. White and dark gray squares are stable dead and live cells respectively, while the red and blue cells are alternating. There are no jigsaw contours, bu...
by pcallahan
January 22nd, 2020, 10:32 am
Forum: General Discussion
Topic: Thread for basic questions
Replies: 1814
Views: 484360

Re: Thread for basic questions

Sokwe wrote:
January 22nd, 2020, 2:38 am
I suppose my previous post was missed with the page change, but to reiterate, one of these is possible:
Oops. You're right. I missed it.