ConwayLife.com

Macbi

In order to create a Garden of Eden. Consider one cell. If it is ON it has 140 parents. https://oeis.org/A196447 The graph of that sequence is interesting. It has a sawtooth pattern where it jumps up and then gradually comes back down. I guess the jump up happens when the spiral reaches a corner? D...

Macbi

GUYTU6J wrote: ↑
March 24th, 2021, 3:02 am
They turned out to be somewhat inaccurate today, as confessed in the thread "More members needed in the Trump group" that I've reported

The alternative hypothesis is that ColorfulGalaxy wasn't hacked, and they just made a troll post.

Macbi

Bump! real dynamic rule and a pattern which can probably break the record? x = 3, y = 1, rule = B2-an3-ciq4acikny5-aej6-ai8/S012-e3-in4-ej5-anr6-ci78 obo! (sorry for dp)Help!(looks like a near miss, though) I think this stabilises at around population 3.9642324e11. I didn't catch the generation tho...

Macbi

Asking here for lack of a better thread: recently, the term "Pattern" in PoTY has become a bit of a stretch; a lot of the nominees are things like "34-bit still life enumeration", "Period-9 heavyweight sparker and associated R shuttle", "New growing spaceships", "New c/5 diagonal spaceships", and t...

Macbi

This is a problem caused by the update from Python 2 to Python 3, which are slightly incompatible languages. In this case all that is needed is to replace all copies of 'xrange' with 'range'. # Golly Python script. Written by PM 2Ring, March 2009. Updated August 2009. # Modified for Golly 2.0+ by An...

Macbi

I also set QuickLife to step size 2. I don't think there's anything magical about 10. If anything I seem to remember that QuickLife works in 2s, so that areas of ash containing still lifes and blinkers become unchanging. That might just be lifelib though.

Macbi

I'd advise changing the step size in File > Preferences > Control > Set default base step to "2" for HashLife, instead of "8" -- that gives much better control over simulation speed, at the cost of having to hit + or - a few more times, on occasion. Does anyone actually like 8? We could just make 2...

Macbi

You can use the + and - keys on your keyboard. (Or the Shift= if you don't have a numpad. I don't know about phones though.)

Macbi

I think moderation decisions should be made by the moderators rather than by community votes.

Macbi

I don't think that's likely to work, because oscar.py/oscar.lua relies on the idea of keeping track of a list of just the lowest hash values in a range of tested generations. For a period-P pattern I don't see how you can be sure that you're going to find the matching hash value until you've tested...

Macbi

https://aturingmachine.com/

Macbi

Could we speed up oscar.py by only looking at generations from a sparse ruler, and using hash life to jump between them?

Macbi

MathAndCode wrote: ↑
March 18th, 2021, 7:41 pm
Macbi wrote: ↑
March 18th, 2021, 2:41 pm
I calculated the correlation coefficients between people's votes and the totals:
Is similar data available for past years?

I think I did calculate it last year but didn't post it. Of course the threads are still there, so you can calculate it if you want. It'll just take a bit of boring data entry.

Macbi

I believe B14/S0124V is a valid rule for the above pattern? Not quite. It contains black dots with red surrounds in the top right and bottom left, so it wouldn't be stable under B14/S0124V but would under B01/S0124V. Tracing it carefully, I believe the cells that we can see are as follows. x = 37, ...

Macbi

Congrats to the Bandersnatch and Speed Demonoid! I calculated the correlation coefficients between people's votes and the totals: Bellwether: goldenratio Iconoclast: C28 Most similar tastes: toroidalet and iNoMed Most divergent tastes: EvinZL and Saka Most correlation between patterns: 'New growing ...

Macbi

American Samoa is only -12, and it's already past midday in the UK. I think we're done. https://time.is/Anywhere_on_Earth

Macbi

Extrementhusiast wrote: ↑
July 8th, 2009, 1:08 am
Further hint: (1=on, 0=off, code solutions into binary)
Code: Select all
4*7
5*4
7*3
11+6
37-8
x+x=x*x=solution
56/2

That is a weird way to write a number.

Code: Select all

x = 5, y = 7, rule = B3/S23
3o$obo$obobo$o3bo$3obo$2bo$3o!

Macbi

To convince myself I did the following searches with even less clearance. (Double posting to circumvent 3 file limit.)

fast-eater2.csv: (3.25 KiB) Downloaded 13 times

fast-eater.csv: (2.69 KiB) Downloaded 16 times

We can declare this Conjecture a Theorem.

Macbi

dvgrn wrote: ↑
December 18th, 2017, 7:14 pm
Conjecture: No glider eater can be constructed with a recovery time of three ticks or less.

Kayzan did the following LLS searches to prove this conjecture:

ThreeTickEater.txt: (8.85 KiB) Downloaded 22 times

ThreeTickEater2.txt: (8.85 KiB) Downloaded 16 times

Macbi

'Garden of Samsara' for a pattern that can be rewound arbitrarily far.

Macbi

wwei47 wrote: ↑
March 13th, 2021, 10:16 am
kiho park wrote: ↑
March 13th, 2021, 9:52 am
○ 4n/16n+4, n>=3
Code: Select all
x = 11, y = 29, rule = B2cek3aenqy4-eijny5-aknr6a/S1e2-e3-aikn4cijky5acny6ekn7
8bo$9bo$b8o$2o8bo$b9o4$8bo$9bo$2b7o$3bo6bo$2b8o4$8bo$9bo$4b5o$3b2o5bo$
4b6o7$10bo$10bo!
One of those explodes. Also, why not just say 17/4?

I think it's 4n/(16n+4).

Macbi

As I think you wrote on another thread, some CGOL hobbyists are engineers, not mathematicians. If something obviously can be done, then it may be "trivial" to a mathematician to do it, but not everyone sees it that way. There are interesting CGoL problems for mathematicians too. One I've been think...

Macbi

only 25 people voted - pitiful turnout... About 25 people votes last year as well. I did some quick counts: 2010 16 2011 19 2015 22 2016 23 2017 20 2018 37 2019 25 So more than 25 people this year would actually be quite good, except in comparison to 2018 which was a bumper year (likely because Sir...

Macbi

Borrowing from the Rubik's Cube community, we could use the term God's Number to refer to the the number of gliders needed to synthesise any synthesisable still life. In other words the number bounded by 4 ≤ G < 18 from the exhaustive enumeration of all 3G collisions and the RCT.

Macbi

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