Search found 17 matches

by AGreason
July 3rd, 2020, 6:00 pm
Forum: Patterns
Topic: 20-bit still life syntheses
Replies: 9
Views: 343

Re: 20-bit still life syntheses

Some more transfer runs brings it down to 982 unsynthed - now under 1000. Only 52 left to get to as many unsynthed xs20 as there were unsynthed xs19 at the very start of the 19-in-anything project. :P updated soupcount list attached Working on Kazyan's xs20-implication-graph request, should have som...
by AGreason
June 30th, 2020, 9:06 pm
Forum: Patterns
Topic: 20-bit still life syntheses
Replies: 9
Views: 343

Re: 20-bit still life syntheses

Can you give a brief summary of what's known, if anything, about these remaining 2^10+1 still lifes? For example, it looks like most of them don't have any soups on record, but a few of them do. 215 of them have soups in C1, the full list sorted by soupcount is attached. I think it may be possible ...
by AGreason
June 30th, 2020, 11:27 am
Forum: Patterns
Topic: 20-bit still life syntheses
Replies: 9
Views: 343

20-bit still life syntheses

I'm creating this thread solely so that there's a defined specific place on the forum for these, and this should not be interpreted as laying down any sort of mandate or deadline. The current status can be seen at https://catagolue.appspot.com/census/b3s23/synthesis-costs/xs20 At time of writing, in...
by AGreason
November 24th, 2019, 12:44 pm
Forum: Patterns
Topic: Oscillator Discussion Thread
Replies: 1281
Views: 607783

Re: Oscillator Discussion Thread

How did you find that p23?
by AGreason
November 7th, 2019, 3:14 pm
Forum: Patterns
Topic: Oscillator Discussion Thread
Replies: 1281
Views: 607783

Re: Oscillator Discussion Thread

AGreason & WildMyron's agar A note on attribution - I found the p6 and p8 agars (via SAT solver), and noted both the p6 and this one (the p8 moreso) give the impression of a background with vertically-propagating disturbances, which may be suggestive of a way to make arbitrary even-period phoenix a...
by AGreason
November 4th, 2019, 10:16 pm
Forum: Patterns
Topic: Oscillator Discussion Thread
Replies: 1281
Views: 607783

Re: Oscillator Discussion Thread

Collecting some phoenix agars (so I have something to cite for lifewiki) (note: the following are finite portions, large enough that it's clear it can be tiled indefinitely) p2: x = 30, y = 21, rule = B3/S23 2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o$2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o$2o2b2o2b 2o2b2o2b2o2b2o2b2o2b2...
by AGreason
October 22nd, 2019, 8:41 pm
Forum: Patterns
Topic: 19-bit still life syntheses
Replies: 99
Views: 19198

Re: 19-bit still life syntheses

A search including new components solved 34, down to 607 unsynthed.
by AGreason
October 16th, 2019, 11:17 am
Forum: Patterns
Topic: 19-bit still life syntheses
Replies: 99
Views: 19198

Re: 19-bit still life syntheses

Including the new components and synths, transfer brings it down to 691 unsynthed
by AGreason
October 13th, 2019, 3:45 pm
Forum: Patterns
Topic: 19-bit still life syntheses
Replies: 99
Views: 19198

Re: 19-bit still life syntheses

After some deeper transfer search (depth 2 complete, depth 3 ongoing) down to 765 unsolved

EDIT: depth 3 complete, 757 unsynthed
by AGreason
September 29th, 2019, 7:22 pm
Forum: Patterns
Topic: Soup-based syntheses
Replies: 158
Views: 52508

Re: Soup-based syntheses

If they are neither soups nor syntheses, why post them in the "soup-based syntheses" thread?
by AGreason
September 29th, 2019, 12:21 pm
Forum: Website Discussion
Topic: LifeWiki Trusted Account Request Thread - Post requests here
Replies: 390
Views: 144412

Re: LifeWiki Trusted Account Request Thread - Post requests here

Username:AGreason

I've ruled out p5 phoenixes viewtopic.php?f=2&t=1437&p=83405#p83405 and would like to edit the Phoenix article accordingly
by AGreason
September 29th, 2019, 12:07 pm
Forum: Patterns
Topic: Oscillator Discussion Thread
Replies: 1281
Views: 607783

Re: Oscillator Discussion Thread

I have verified via SAT solver (using apgoucher's GRILLS to set up the SAT instance) that there is no 11 cell by 11 cell by 5 generation patch, with the outer rim set freely and the interior constrained to follow cgol rules, that satisfies the following criteria: A. is a p5 oscillator B. is a phoeni...
by AGreason
September 22nd, 2019, 12:56 am
Forum: Scripts
Topic: Synthesis component search script
Replies: 16
Views: 5536

Re: Synthesis component search script

I ported the main loop of my version to C++, for a significant speedup, and put it on github https://github.com/AlexGreason/Collisearch . Note that you'll have to manually set the lifelib path in CMakeLists.txt to wherever your lifelib installation is This version gets almost 50k collisions/sec (2-g...
by AGreason
August 9th, 2019, 9:41 pm
Forum: Patterns
Topic: 17 in 17: Efficient 17-bit synthesis project
Replies: 315
Views: 114236

Re: 17 in 17: Efficient 17-bit synthesis project

please can you accept merge request 38, containing Alex Greason's collisrc+transfer results? There are plenty of new efficient xs17 syntheses in there, so it might get us significantly further through the project To moderate expectations, if I recall correctly only two expensive xs17 were reduced b...
by AGreason
August 4th, 2019, 10:27 am
Forum: Scripts
Topic: Synthesis component search script
Replies: 16
Views: 5536

Re: Synthesis component search script

I made some modifications to the script. 1. I removed the requirement that at least one cell of the initial target remain alive throughout the reaction 2. it can now search in parallel, set the --n-threads argument for the number of search threads 3. instead of running collisions with a single objec...
by AGreason
April 14th, 2019, 4:04 pm
Forum: General Discussion
Topic: Catagolue Discussion Thread
Replies: 341
Views: 117147

Re: Catagolue Discussion Thread

Is there any way of determining who it was that contributed the 400 trillionth object?
by AGreason
January 31st, 2018, 9:05 pm
Forum: Patterns
Topic: Soup search results
Replies: 2190
Views: 1304812

Re: Soup search results

My first first discovery (first appearance in C1, anyway, it's shown up a number of times in other symmetries): https://catagolue.appspot.com/object/xs34_025b8b52z0g6t1t6gz121x121/b3s23 , a nicely symmetrical 34-bit still life, which came from this: https://catagolue.appspot.com/hashsoup/C1/l_nyYtRC...