Search found 715 matches

by Macbi
Yesterday, 6:46 am
Forum: Patterns
Topic: POTY 2019 Voting
Replies: 26
Views: 700

Re: POTY 2019 Voting

#01 ***
#02 **
#03 *
#05 ***
#06 *
#07 **
#08 ***
#13 *
#17 *
#18 *
#19 *
#21 ***
#22 *
#23 *
#25 *
#26 **
by Macbi
February 21st, 2020, 4:54 am
Forum: Scripts
Topic: Logic Life Search
Replies: 189
Views: 65405

Re: Logic Life Search

Try replacing the double spaces with single spaces. (Or if you want everything to remain beautifully aligned then replace the single spaces with commas and the double spaces with commas followed by a space.)
by Macbi
February 4th, 2020, 9:03 am
Forum: Patterns
Topic: Synthesis of gliders using other spaceships
Replies: 3
Views: 204

Synthesis of gliders using other spaceships

If it's possible to make a glider by colliding copies of a given ship then it's also possible to use copies of that ship to synthesise anything glider-constructable. Here are some patterns to show that this is possible for LWSS, MWSS, HWSS, 25P3H1V0.1, 25P3H1V0.2, 37P4H1V0, 30P5H2V0, loafer, weekend...
by Macbi
February 4th, 2020, 6:15 am
Forum: The Sandbox
Topic: Synthesizing Patterns In Unusual Ways
Replies: 4
Views: 269

Re: Synthesizing Patterns In Unusual Ways

Tub with long tail in three 37P4H1V0s. x = 68, y = 43, rule = B3/S23 31b2o2$31bo$27b2ob2o$15bo3bo3b2o3bo$15bo3b5o6bo$16b2obob3o3b3o$22b2o2b 3o$15bo7bob3o$14b3o5$16b3o$7b3o$6b5o4bo2bo$3b2obo3bo5bo$4bob2o4b6o$2b 2ob5o3bo$bo4bo5bo$o4bo$4bo$3o$59b2o$58b3o2bo$59b4o2$62bo$62b3o2$61bo2b o$60bo$60bo3bo$60bo...
by Macbi
January 22nd, 2020, 6:38 am
Forum: Patterns
Topic: Soup search results
Replies: 2126
Views: 1237380

Re: Soup search results

testitemqlstudop wrote:
January 21st, 2020, 9:29 pm
Proud first discoverer of an xs36
10G synthesis based on that soup:

Code: Select all

x = 33, y = 23, rule = B3/S23
2bo$obo$b2o$16bo3bo$15bobobobo$15bobobobo$16b2ob2o3bo$24bobo$24b2o$30b
obo$30b2o$22b3o6bo$24bo$23bo4$b2o$2b2o$bo$18b2o$17b2o$19bo!
by Macbi
January 7th, 2020, 8:16 am
Forum: Website Discussion
Topic: Pattern viewer for forum threads
Replies: 1528
Views: 327532

Re: Pattern viewer for forum threads

Feature request: With the introduction of 'show in LifeViewer' for Golly, it would also be nice to have 'show in Golly' in LifeViewer. You would be able to do it by just having a 'Download RLE' button, since users could then tell their browser to open downloaded .rles in Golly.
by Macbi
January 4th, 2020, 4:30 am
Forum: Patterns
Topic: POTY 2019 Nomination Thread
Replies: 64
Views: 2541

Re: POTY 2019 Nomination Thread

I nominate the patterns found by Nick Gotts in his Systematic survey of small patterns, including Bunnies 10a which broke a long-standing record for population 10 methuselahs.
by Macbi
January 3rd, 2020, 7:01 am
Forum: Patterns
Topic: 19-bit still life syntheses
Replies: 99
Views: 6470

Re: 19-bit still life syntheses

(which can possibly be managed to 9g or 8g with some cleanup optimization - I can't set up Seeds of Destruction on my computer for some reason) 7G in fact: x = 77, y = 58, rule = B3/S23 25bo$23b2o$24b2o37$75bo$74bobo$5bo67bo2bo$4bo67bob2o$4b3o65bobo$71b2ob o$18b3o49bo2bo$b2o15bo50bo2bo$obo16bo50b2o...
by Macbi
December 19th, 2019, 6:59 am
Forum: Patterns
Topic: Thread for your unsure discoveries
Replies: 1769
Views: 862312

Re: Thread for your unsure discoveries

All trivial, surely known c2p16 with a fuse (?) at the end with speed 3/11 x = 147, y = 80, rule = B3/S23 60b4o32b2o$60bo3bo29bo4bo$53b2o5bo32bo$51bo4bo4bo2bo28bo5bo$50bo42b6o$ 50bo5bo$50b6o26bo2bo$81bo$43b2o36bo3bo$42b4o11b3o4bo16b4o$41b2ob2o14bo 2b3o21b3o2b2o$42b2o13bo3bo4bo20b3o2b2o9bo20b3o$48bo...
by Macbi
December 8th, 2019, 6:03 am
Forum: Patterns
Topic: 16 in 16: Efficient 16-bit Synthesis Project
Replies: 282
Views: 203024

Re: 16 in 16: Efficient 16-bit Synthesis Project

Kazyan wrote:
December 7th, 2019, 3:13 pm
Or maybe an aggressive 5G search to find the three 10-bit still lifes that still require 6 gliders (very long hook with tail, tub with long long tail, and the remarkably long snake).
Is there any hope for getting the two remaining 9-bitters in 4?
by Macbi
December 3rd, 2019, 6:32 am
Forum: Patterns
Topic: orphan pattern / garden of eden
Replies: 27
Views: 15251

Re: orphan pattern / garden of eden

The problem of deciding whether a given finite-population pattern is a GoE has been rattling about in my brain for the last couple of years. So when I saw a mathoverflow question asking for " Decision problems for which it is unknown whether they are decidable " I quickly posted it as an example of ...
by Macbi
November 18th, 2019, 2:20 pm
Forum: Patterns
Topic: 16 in 16: Efficient 16-bit Synthesis Project
Replies: 282
Views: 203024

Re: 16 in 16: Efficient 16-bit Synthesis Project

Congrats! Here's the current state of the art: Population Max Cost 9 5 10 6 11 7 12 8 13 9 14 11 15 12 16 14 17 16 18 38 19 infinity Every still life <9 cells can be done in 4 or less, which is known to be optimal since we've checked all the 3 glider collisions.
by Macbi
November 13th, 2019, 6:24 pm
Forum: The Sandbox
Topic: Introductions
Replies: 96
Views: 60758

Re: Introductions

It sounds natural to me.
by Macbi
November 7th, 2019, 11:14 am
Forum: Website Discussion
Topic: Cross topic search reqiest
Replies: 6
Views: 2654

Re: Cross topic search reqiest

Google wasn't indexing all the posts before the forum update either.
by Macbi
October 26th, 2019, 7:14 am
Forum: The Sandbox
Topic: Ordinals in googology
Replies: 169
Views: 5838

Re: Ordinals in googology

What is the cardinality of the set of: 1) all ordinals; 2) all countable ordinals; 3) all computable ordinals. 3) ℵ_0 That does not make sense; you can infinitely exponentiate w and add them together (this is further enlargened by the branching possibilities of each exponent and coefficient), so un...
by Macbi
October 25th, 2019, 7:45 am
Forum: The Sandbox
Topic: Ordinals in googology
Replies: 169
Views: 5838

Re: Ordinals in googology

testitemqlstudop wrote:
October 25th, 2019, 7:34 am
What is the cardinality of the set of:

1) all ordinals;
2) all countable ordinals;
3) all computable ordinals.
1) There is no set of all ordinals, just like there is no set of all sets.
2) ℵ_1
3) ℵ_0
by Macbi
October 5th, 2019, 6:38 am
Forum: The Sandbox
Topic: Largest total computable function competition
Replies: 170
Views: 17903

Re: Largest total computable function competition

I believe the fastest growing known computable functions are of the following form: n ↦ The combined running time of all Turing machines (with no input) such that there exists a proof that they halt in second-order PA using fewer than n symbols FIrst order set theory is much stronger, and you might...
by Macbi
October 3rd, 2019, 10:12 am
Forum: Website Discussion
Topic: Updating website
Replies: 48
Views: 2648

Re: Updating website

If I'm going to be quite honest, it seems a bit jarring in terms of color compared to the rest of the wiki, and also feels like it gets in the way to an extent. Maybe the links could be moved to the left sidebar? Honestly I kind of agree. I'll leave it up for at least a day though to see if anyone ...
by Macbi
October 3rd, 2019, 4:07 am
Forum: Website Discussion
Topic: Like button in forum request
Replies: 33
Views: 11464

Re: Like button in forum request

All of the original comments raised good points. It would be nice to be able to congratulate people without having to comment. (I'm thinking in particular of Nick Gotts' work, which I find amazing but don't always have anything interesting to add.) But it would be bad if the like buttons turned the ...
by Macbi
October 2nd, 2019, 9:08 am
Forum: Website Discussion
Topic: Updating website
Replies: 48
Views: 2648

Re: Updating website

Nathaniel wrote:
October 2nd, 2019, 8:42 am
Gamedziner wrote:
October 2nd, 2019, 8:28 am
Pages in the updated forums seem to load a lot slower.
Anyone else having this problem? Seems fine to me.

Also, I'll be updating to PHP 7.2 in a day or two, which should speed up the whole site somewhat.
Seems fine to me too.
by Macbi
October 1st, 2019, 10:54 am
Forum: The Sandbox
Topic: Thread for your ridiculously absurd questions
Replies: 51
Views: 2105

Re: Thread for your ridiculously absurd questions

Then what would be the best way to affect the spin of the Earth that we can do currently? Say the entire human race's goal is to affect the Earth's spin as much as possible. What's the most effective way with today's technology? Perhaps adjust the orbit of an asteroid so that it falls out of the be...
by Macbi
October 1st, 2019, 7:27 am
Forum: The Sandbox
Topic: Thread for your ridiculously absurd questions
Replies: 51
Views: 2105

Re: Thread for your ridiculously absurd questions

What if we attached a massive light sail, say the diameter of the moon, to the equator? Assume the light sail and the supports and attachments etc. are indestructible and ignore the logistics and things to actually make said light sail (Lets say it suddenly appeared out of nowhere.). Would it affec...
by Macbi
September 23rd, 2019, 8:06 am
Forum: General Discussion
Topic: Golly with Python 3?
Replies: 5
Views: 895

Re: Golly with Python 3?

I think the current status is that there are no plans to migrate Golly to Python 3. It was Andrew Trevorrow who implemented Python 2 originally, but he much prefers Lua to Python 3 and has no plans to continue working on Python support (see his message here ). But he's happy for Golly to have Python...
by Macbi
September 21st, 2019, 11:59 am
Forum: The Sandbox
Topic: Thread for Non-CA Academic Questions
Replies: 318
Views: 76872

Re: Thread for Non-CA Academic Questions

Is it possible to define an infinite sequence of ordinals such that for all o less than w_1, you have only gone past a finite amount of ordinals in the sequence? Formally: Is ∃(A)∀(o|o<|(w_1))∀(B|[∀n|n<o,n∈A⇒n∈B]∧[∄(C|C⊂B∧[∀n|n<o,n∈A⇒n∈B])])(|B|<w∧|A|>=w) a true statement? I think in your formalisa...
by Macbi
September 19th, 2019, 10:25 am
Forum: Patterns
Topic: Systematic survey of small patterns
Replies: 42
Views: 32430

Re: Systematic survey of small patterns

Nice progress! My search has also (as it should) found Paul Callahan's 10-cell single-cluster pattern producing a block-laying switch engine, together with 5 trivial variants: x = 50008, y = 50007, rule = B3/S23 bo$2obo$bobo$3bo$5bobo$5bo9995$10001bo$10000b2obo$10001bobo$10003bo$ 10005bo$10005bobo99...