Search found 1241 matches

by mniemiec
Today, 3:19 pm
Forum: Patterns
Topic: Thread For Your Accidental Discoveries
Replies: 1649
Views: 1134283

Re: Thread For Your Accidental Discoveries

Is there anything missing from https://conwaylife.com/ref/mniemiec/glider-2.htm ? No. That includes all 71 "legal" 2-glider collisions (i.e. those where the gliders could approach from long distances, and then interact). It doesn't include the small number of ways where gliders could interact in wa...
by mniemiec
Today, 1:20 am
Forum: Patterns
Topic: Thread For Your Accidental Discoveries
Replies: 1649
Views: 1134283

Re: Thread For Your Accidental Discoveries

Is there a tabulation of the results of invalid two-glider collisions? Dave Buckingham tried all of them back in the '80s or so, but he only saved a few that were actually useful in syntheses, because such collisions would always require 3-4 gliders to synthesize anyway. I don't know if anyone has ...
by mniemiec
February 20th, 2021, 10:44 pm
Forum: General Discussion
Topic: Thread for basic questions
Replies: 2490
Views: 703256

Re: Thread for basic questions

I meant that dvgrn double-spaces after full stops, but phpBB reduces it to a single space. Yeah, I do (and the revision GUYTU6J pointed to is a good example of me doing it). I've been trying to break the habit lately, but it was drilled into me as the Absolute Only Right Thing To Do After A Full St...
by mniemiec
February 18th, 2021, 10:51 pm
Forum: Patterns
Topic: Thread For Your Accidental Discoveries
Replies: 1649
Views: 1134283

Re: Thread For Your Accidental Discoveries

wwei47 wrote:
February 18th, 2021, 10:02 pm
Well, it would still be amusing to see a loafer used in an actual synthesis. :P
It's possible that a loafer might be the most convenient way to edge-shoot a loaf into the middle of a busy synthesis where incoming gliders might be inconvenient.
by mniemiec
February 17th, 2021, 4:44 pm
Forum: General Discussion
Topic: Thread for basic questions
Replies: 2490
Views: 703256

Re: Thread for basic questions

Why does LeapLife glider eaters so specialized that they can hardly catalyze anything except gliders? I have quite a few glider eaters from dr now, but unlike Life (where eater 1, eater 2, and many in the eater stamp collection can catalyze many things with the pre-block head) they are of unbelieva...
by mniemiec
February 15th, 2021, 8:25 pm
Forum: Other Cellular Automata
Topic: Thread For Your Unrecognised CA
Replies: 2212
Views: 728440

Re: Thread For Your Unrecognised CA

what’s Pseudo-replicator? Presumably, a pattern that makes multiple copies of itself that do not interact cleanly. This causes multiple copies of the pattern to keep recurring, mostly at edges of the active area, but the interacting duplicates in the middle create a large unpredictable mess. Many r...
by mniemiec
February 15th, 2021, 12:54 am
Forum: Other Cellular Automata
Topic: Thread For Your Unrecognised CA
Replies: 2212
Views: 728440

Re: Thread For Your Unrecognised CA

So technically odd periods can't exist in B0 rules at all? Odd-period oscillators can exist in B0 rules, as long as the rule is self-complementary. Here is a p3 in B0124/S01235: ... It doesn't have to be exactly self-complementary. Here's a p3 in a maze-like rule (B012456/S5). ... Technically, odd-...
by mniemiec
February 11th, 2021, 1:34 pm
Forum: Other Cellular Automata
Topic: LeapLife (B2n3/S23-q)
Replies: 906
Views: 104541

Re: LeapLife (B2n3/S23-q)

The reverse is not true, however: inaccessible oscillators are not necessarily billiard tables. p. s. Did you see all of my synths? Yes, this is true. Billiard tables require a rotor that is totally enclosed by the stator. There are also many non-billiard tables where the stator is exposed to the "...
by mniemiec
February 10th, 2021, 1:50 pm
Forum: Other Cellular Automata
Topic: LeapLife (B2n3/S23-q)
Replies: 906
Views: 104541

Re: LeapLife (B2n3/S23-q)

I don't think "cannot be used in reactions" is part of the billiard table definition, but there was a path that connects the rotor to the outer space so calling it enclosed was questionable (wwei23 definition). It's not that it's part of the definition of billiard table; rather, it's a natural cons...
by mniemiec
February 10th, 2021, 1:38 pm
Forum: Patterns
Topic: Thread For Your Accidental Discoveries
Replies: 1649
Views: 1134283

Re: Thread For Your Accidental Discoveries

I think I accidentally discovered an eater of some sort - similar to eater 1, but it requires and exact copy of itself mirrored to be stable. Code for demonstration below: ... Let me know if this exists already or can be used in any way. Many still-lifes that have the "eater head" part of Eater-1 c...
by mniemiec
February 7th, 2021, 2:32 pm
Forum: General Discussion
Topic: Thread for basic questions
Replies: 2490
Views: 703256

Re: Thread for basic questions

"x siamese y" is patterns x and y combined in a way where they share cells in common. "Manhattan distance" is the distance between two points by traveling along the axes. E.g. between points (0,0) and (3,4), the Pythagorean Distance (i.e. "as the crow flies") is 5, but the Manhattan Distance is 7 (i...
by mniemiec
February 6th, 2021, 1:45 pm
Forum: Patterns
Topic: Thread For Your Useless Discoveries
Replies: 3052
Views: 1211656

Re: Thread For Your Useless Discoveries

I found something with the bakery! If you put two nodes in the middle, it makes an oscillator! sorry, i cannot figure out how to insert an image yet, but I'll figure it out. Do you use Golly to experiment with Life? If not, it's a very useful tool for many things. It can export patterns in RLE form...
by mniemiec
February 5th, 2021, 1:07 pm
Forum: Patterns
Topic: Thread For Your Useless Discoveries
Replies: 3052
Views: 1211656

Re: Thread For Your Useless Discoveries

JP21 wrote:
February 5th, 2021, 3:24 am
{capped sidewalk wick}
This has been known for a long time. You can also terminate it directly with pi heptominoes without needing to mangle the end LOM precursors.
by mniemiec
February 3rd, 2021, 2:06 pm
Forum: General Discussion
Topic: Thread for basic questions
Replies: 2490
Views: 703256

Re: Thread for basic questions

Also, ColorfulGalaxy has already mentioned the "MWSS spark" twice on his Wiki article. What does it actually mean? An LWSS spark is the one-bit spark at the back end of an LWSS (and also MWSS and HWSS). A MWSS spark is the one-bit spark at the side of an MWSS (and also MWSS emulator and similar osc...
by mniemiec
January 31st, 2021, 6:31 pm
Forum: General Discussion
Topic: Thread for basic questions
Replies: 2490
Views: 703256

Re: Thread for basic questions

I found a solution based on my idea that only requires the addition of what I think is a two-glider spark. ... Edit: Here's the relevant two-glider collision: ... That's not what I meant. That's the easy part. The hard part is to get the predecessor itself, without ending up with this (any attempt ...
by mniemiec
January 31st, 2021, 6:22 am
Forum: General Discussion
Topic: Thread for basic questions
Replies: 2490
Views: 703256

Re: Thread for basic questions

If the traffic light predecessor can be modified so that generation eleven looks like this, then the bit can be added from the other side. ... Interesting idea; unfortunately, I think you'll find that it difficult to find a predecessor for this. Every way I could find to do this also adds additiona...
by mniemiec
January 30th, 2021, 2:51 am
Forum: General Discussion
Topic: Thread for basic questions
Replies: 2490
Views: 703256

Re: Thread for basic questions

Is there a way to merge two barberpoles already in a tie with gliders. (I'm wondering whether this can allow a more efficient nonapole synthesis.) Not at present. I remember having a conversation with Dave Buckingham in the '90s about barber pole extenders. He had a few, and I found that one of his...
by mniemiec
January 25th, 2021, 9:51 am
Forum: Patterns
Topic: Small Spaceship Syntheses
Replies: 511
Views: 401611

Re: Small Spaceship Syntheses

Now, as far as I know, the two smallest un-buildable spaceships are the 29- and 30-bit c/3 ones. Indeed. I think the following are all of the known ships with no known synthesis up to 36 cells: ... That is, assuming we can easily synthesize all of the small variants of c/2 ships that haven't yet be...
by mniemiec
January 24th, 2021, 9:51 pm
Forum: Patterns
Topic: Small Spaceship Syntheses
Replies: 511
Views: 401611

Re: Small Spaceship Syntheses

Now if a synthesis for edge-repair spaceship 1 would just appear in the New Year's stocking -- or wherever such things appear -- then I could stop getting confused about which small hard-to-tell-apart c/3 spaceships are synthesizable and which aren't. Now, as far as I know, the two smallest un-buil...
by mniemiec
January 22nd, 2021, 2:05 pm
Forum: General Discussion
Topic: Thread for basic questions
Replies: 2490
Views: 703256

Re: Thread for basic questions

This is a post from 2016. It's on the bottom of the first page, so maybe he saw that there were new posts there but accidentally clicked to go to this thread in general instead of to go to the latest posts, scrolled down in order to go to the latest posts because he realized that he was at the top ...
by mniemiec
January 22nd, 2021, 12:36 pm
Forum: General Discussion
Topic: Thread for basic questions
Replies: 2490
Views: 703256

Re: Thread for basic questions

... This pattern looks like the result of a corrupted rle. Are you referring to the use of the "x" state? In my synthesis database, I have always "o" for "before" cells and "x" for "after" cells, and sometimes "y" for "junk" cells (for Life programs that choose to differentiate between them). Most ...
by mniemiec
January 18th, 2021, 2:30 am
Forum: Other Cellular Automata
Topic: LeapLife (B2n3/S23-q)
Replies: 906
Views: 104541

Re: LeapLife (B2n3/S23-q)

yujh wrote:
January 18th, 2021, 2:24 am
-4 cells ...
-2 more:

Code: Select all

x = 17, y = 19, rule = B2n3/S23-q
bbo$obo$boo3$13boo$12bobbo$12boboo$11boobo$9bo5bo$9b5obo$13boboo$9b4o$
9bo$6bo3bo$6b4o$$8boo$8boo!
by mniemiec
January 18th, 2021, 1:13 am
Forum: Patterns
Topic: Synthesising Oscillators
Replies: 1107
Views: 873715

Re: Synthesising Oscillators

Did whoever synthesized Pentoad 1H2 not realize that the part in the upper right is just a block and a century? For reference, here is the activation stage of the current synthesis in Catagolue: ... That looks like mine from 2013-08-29. Yes, I knew about the bookend/century and the block; I just co...
by mniemiec
January 17th, 2021, 9:54 am
Forum: Other Cellular Automata
Topic: LeapLife (B2n3/S23-q)
Replies: 906
Views: 104541

Re: LeapLife (B2n3/S23-q)

EDIT: Is this known? ... Yes, and it can be synthesized from 6 gliders. (Curiously, the initial block is a necessary catalyst that must be created and later destroyed). x = 105, y = 16, rule = B2n3/S23-q 39bobo$39boo3bobo$40bo3boo$45bo$34bobo$35boo29boo28boo$bbo32bo30bobbo 26bobbo$obo67bo29bo$boo64...
by mniemiec
January 15th, 2021, 2:41 am
Forum: General Discussion
Topic: Thread for basic questions
Replies: 2490
Views: 703256

Re: Thread for basic questions

Simply checking whether a pattern matches a previous generation would keep delivering false negatives if the final pattern has two spaceships with different velocities or both a spaceship and a still-life or oscillator. Rakes and patterns emitting sparks (including constructed "sparks") in weird di...