For general discussion about Conway's Game of Life.
hotdogPi
Posts: 362
Joined: August 12th, 2020, 8:22 pm

### Re: Thread for basic questions

Frequency of evolutionary sequences can be compared to still lifes and oscillators by using the pulsar as reference. On the list of common evolutionary sequences page, the honey farm is 49 times as common as the pulsar (taking into account the ones farther down the list), and we know how common the pulsar is in relation to other still lifes and oscillators. However, there are some short evolutionary sequences that we don't know their frequency.

What is the frequency of these ten short-sequence objects that don't qualify in the "list of evolutionary sequences" list due to never reaching 20 cells or not being above 20 for long enough, and am I missing any particularly common ones?

Code: Select all

``````x = 67, y = 72, rule = B3/S23
7\$15bo31b2o\$14b3o29bo2bo\$46b4o10\$46b3o\$46bobo\$14b4o28bo\$14bo2bo29bo11\$
12b2o2b3o29bo\$12b2o2bobo28bobo\$16b3o28b2o\$47bo8\$15bo\$15bo30b3o\$15bo30b
obo\$14bo31bobo\$15bo33bo\$15bo\$15bo8\$17b2o26b2o\$13b2obo2bo25bo2bo\$12bo2b
ob2o26bob2o\$13b2o!
``````
EDIT: Forgot about the fleet and bakery
Last edited by hotdogPi on June 16th, 2021, 8:41 am, edited 1 time in total.

MathAndCode
Posts: 4804
Joined: August 31st, 2020, 5:58 pm

### Re: Thread for basic questions

hotdogPi wrote:
June 14th, 2021, 9:05 am
Am I missing any particularly common ones?
Should the following count?

Code: Select all

``````x = 5, y = 4, rule = B3/S23
2bo\$o3bo\$o3bo\$o3bo!``````
I have historically worked on conduits, but recently, I've been working on glider syntheses and investigating SnakeLife.

Citation needed
Posts: 31
Joined: April 1st, 2021, 1:03 am

### Re: Thread for basic questions

Hello. What is an "MTCC"? I did not find it on LifeWiki.

ihatecorderships
Posts: 107
Joined: April 11th, 2021, 12:54 pm
Location: Falls Church, VA

### Re: Thread for basic questions

Citation needed wrote:
June 15th, 2021, 12:00 am
Hello. What is an "MTCC"? I did not find it on LifeWiki.
Ah, it means my typical crummy contribution. You should check out Saka's forum term dictionary.
-- Kalan Warusa

Code: Select all

``````x = 4, y = 4, rule = B2ek3ij4-jnqrz/S23
2b2o\$3bo\$ob2o\$3o!
``````

wwei47
Posts: 928
Joined: February 18th, 2021, 11:18 am

### Re: Thread for basic questions

This question is a lot harder than it looks. Given a single true object on a 100-by-50 torus (I've already written the object separation algorithms), how would I unwrap it onto an infinite plane? This:

Code: Select all

``````x = 96, y = 50, rule = B3/S23:T100,50
2o4b2o7bo6bo7b2o7bo6bo7b2o7bo6bo7b2o7bo5bo\$o5bo7b2o7bo6bo7b2o7bo6bo7b
2o7bo6bo7b2o4b2o\$2bo4bo6bo7b2o7bo6bo7b2o7bo6bo7b2o7bo6bo7b2o\$b2o3b2o7b
o6bo7b2o7bo6bo7b2o7bo6bo7b2o7bo6bo\$3b2o3b2o4b2o7bo6bo7b2o7bo6bo7b2o7bo
6bo7b2o7bo\$3bo4bo5bo7b2o7bo6bo7b2o7bo6bo7b2o7bo6bo7b2o\$5bo4bo4bo6bo7b
2o7bo6bo7b2o7bo6bo7b2o7bo6bo\$4b2o3b2o3b2o7bo6bo7b2o7bo6bo7b2o7bo6bo7b
2o7bo\$6b2o3b2o3b2o4b2o7bo6bo7b2o7bo6bo7b2o7bo6bo7b2o\$6bo4bo4bo5bo7b2o
7bo6bo7b2o7bo6bo7b2o7bo6bo\$7bo5bo4bo4bo6bo7b2o7bo6bo7b2o7bo6bo7b2o7bo\$
6b2o4b2o3b2o3b2o7bo6bo7b2o7bo6bo7b2o7bo6bo7b2o\$6bo7b2o3b2o3b2o4b2o7bo
6bo7b2o7bo6bo7b2o7bo6bo\$7bo6bo4bo4bo5bo7b2o7bo6bo7b2o7bo6bo7b2o7bo\$6b
2o7bo5bo4bo4bo6bo7b2o7bo6bo7b2o7bo6bo7b2o\$6bo7b2o4b2o3b2o3b2o7bo6bo7b
2o7bo6bo7b2o7bo6bo\$7bo6bo7b2o3b2o3b2o4b2o7bo6bo7b2o7bo6bo7b2o7bo\$6b2o
7bo6bo4bo4bo5bo7b2o7bo6bo7b2o7bo6bo7b2o\$6bo7b2o7bo5bo4bo4bo6bo7b2o7bo
6bo7b2o7bo6bo\$7bo6bo7b2o4b2o3b2o3b2o7bo6bo7b2o7bo6bo7b2o7bo\$6b2o7bo6bo
7b2o3b2o3b2o4b2o7bo6bo7b2o7bo6bo7b2o\$6bo7b2o7bo6bo4bo4bo5bo7b2o7bo6bo
7b2o7bo6bo\$7bo6bo7b2o7bo5bo4bo4bo6bo7b2o7bo6bo7b2o7bo\$6b2o7bo6bo7b2o4b
2o3b2o3b2o7bo6bo7b2o7bo6bo7b2o\$6bo7b2o7bo6bo7b2o3b2o3b2o4b2o7bo6bo7b2o
7bo6bo\$7bo6bo7b2o7bo6bo4bo4bo5bo7b2o7bo6bo7b2o7bo\$6b2o7bo6bo7b2o7bo5bo
4bo4bo6bo7b2o7bo6bo7b2o\$6bo7b2o7bo6bo7b2o4b2o3b2o3b2o7bo6bo7b2o7bo6bo\$
7bo6bo7b2o7bo6bo7b2o3b2o3b2o4b2o7bo6bo7b2o7bo\$6b2o7bo6bo7b2o7bo6bo4bo
4bo5bo7b2o7bo6bo7b2o\$6bo7b2o7bo6bo7b2o7bo5bo4bo4bo6bo7b2o7bo6bo\$7bo6bo
7b2o7bo6bo7b2o4b2o3b2o3b2o7bo6bo7b2o7bo\$6b2o7bo6bo7b2o7bo6bo7b2o3b2o3b
2o4b2o7bo6bo7b2o\$6bo7b2o7bo6bo7b2o7bo6bo4bo4bo5bo7b2o7bo6bo\$7bo6bo7b2o
7bo6bo7b2o7bo5bo4bo4bo6bo7b2o7bo\$6b2o7bo6bo7b2o7bo6bo7b2o4b2o3b2o3b2o
7bo6bo7b2o\$6bo7b2o7bo6bo7b2o7bo6bo7b2o3b2o3b2o4b2o7bo6bo\$7bo6bo7b2o7bo
6bo7b2o7bo6bo4bo4bo5bo7b2o7bo\$6b2o7bo6bo7b2o7bo6bo7b2o7bo5bo4bo4bo6bo
7b2o\$6bo7b2o7bo6bo7b2o7bo6bo7b2o4b2o3b2o3b2o7bo6bo\$7bo6bo7b2o7bo6bo7b
2o7bo6bo7b2o3b2o3b2o4b2o7bo\$6b2o7bo6bo7b2o7bo6bo7b2o7bo6bo4bo4bo5bo7b
2o\$6bo7b2o7bo6bo7b2o7bo6bo7b2o7bo5bo4bo4bo6bo\$7bo6bo7b2o7bo6bo7b2o7bo
6bo7b2o4b2o3b2o3b2o7bo\$6b2o7bo6bo7b2o7bo6bo7b2o7bo6bo7b2o3b2o3b2o4b2o\$
6bo7b2o7bo6bo7b2o7bo6bo7b2o7bo6bo4bo4bo5bo\$7bo6bo7b2o7bo6bo7b2o7bo6bo
7b2o7bo5bo4bo4bo\$6b2o7bo6bo7b2o7bo6bo7b2o7bo6bo7b2o4b2o3b2o3b2o\$6bo7b
2o7bo6bo7b2o7bo6bo7b2o7bo6bo7b2o3b2o\$7bo6bo7b2o7bo6bo7b2o7bo6bo7b2o7bo
6bo4bo!
``````
Would unwrap to this.

Code: Select all

``````x = 96, y = 648, rule = B3/S23
2o\$o\$2bo\$b2o\$3b2o\$3bo\$5bo\$4b2o\$6b2o\$6bo\$7bo\$6b2o\$6bo\$7bo\$6b2o\$6bo\$7bo\$
6b2o\$6bo\$7bo\$6b2o\$6bo\$7bo\$6b2o\$6bo\$7bo\$6b2o\$6bo\$7bo\$6b2o\$6bo\$7bo\$6b2o\$
6bo\$7bo\$6b2o\$6bo\$7bo\$6b2o\$6bo\$7bo\$6b2o\$6bo\$7bo\$6b2o\$6bo\$7bo\$6b2o\$6bo\$
7bo\$6b2o\$6bo\$7bo\$6b2o\$8b2o\$8bo\$10bo\$9b2o\$11b2o\$11bo\$13bo\$12b2o\$14b2o\$
14bo\$15bo\$14b2o\$14bo\$15bo\$14b2o\$14bo\$15bo\$14b2o\$14bo\$15bo\$14b2o\$14bo\$
15bo\$14b2o\$14bo\$15bo\$14b2o\$14bo\$15bo\$14b2o\$14bo\$15bo\$14b2o\$14bo\$15bo\$
14b2o\$14bo\$15bo\$14b2o\$14bo\$15bo\$14b2o\$14bo\$15bo\$14b2o\$14bo\$15bo\$14b2o\$
14bo\$15bo\$14b2o\$14bo\$15bo\$14b2o\$16b2o\$16bo\$18bo\$17b2o\$19b2o\$19bo\$21bo\$
20b2o\$22b2o\$22bo\$23bo\$22b2o\$22bo\$23bo\$22b2o\$22bo\$23bo\$22b2o\$22bo\$23bo\$
22b2o\$22bo\$23bo\$22b2o\$22bo\$23bo\$22b2o\$22bo\$23bo\$22b2o\$22bo\$23bo\$22b2o\$
22bo\$23bo\$22b2o\$22bo\$23bo\$22b2o\$22bo\$23bo\$22b2o\$22bo\$23bo\$22b2o\$22bo\$
23bo\$22b2o\$22bo\$23bo\$22b2o\$22bo\$23bo\$22b2o\$24b2o\$24bo\$26bo\$25b2o\$27b2o
\$27bo\$29bo\$28b2o\$30b2o\$30bo\$31bo\$30b2o\$30bo\$31bo\$30b2o\$30bo\$31bo\$30b2o
\$30bo\$31bo\$30b2o\$30bo\$31bo\$30b2o\$30bo\$31bo\$30b2o\$30bo\$31bo\$30b2o\$30bo\$
31bo\$30b2o\$30bo\$31bo\$30b2o\$30bo\$31bo\$30b2o\$30bo\$31bo\$30b2o\$30bo\$31bo\$
30b2o\$30bo\$31bo\$30b2o\$30bo\$31bo\$30b2o\$30bo\$31bo\$30b2o\$32b2o\$32bo\$34bo\$
33b2o\$35b2o\$35bo\$37bo\$36b2o\$38b2o\$38bo\$39bo\$38b2o\$38bo\$39bo\$38b2o\$38bo
\$39bo\$38b2o\$38bo\$39bo\$38b2o\$38bo\$39bo\$38b2o\$38bo\$39bo\$38b2o\$38bo\$39bo\$
38b2o\$38bo\$39bo\$38b2o\$38bo\$39bo\$38b2o\$38bo\$39bo\$38b2o\$38bo\$39bo\$38b2o\$
38bo\$39bo\$38b2o\$38bo\$39bo\$38b2o\$38bo\$39bo\$38b2o\$38bo\$39bo\$38b2o\$40b2o\$
40bo\$42bo\$41b2o\$43b2o\$43bo\$45bo\$44b2o\$46b2o\$46bo\$47bo\$46b2o\$46bo\$47bo\$
46b2o\$46bo\$47bo\$46b2o\$46bo\$47bo\$46b2o\$46bo\$47bo\$46b2o\$46bo\$47bo\$46b2o\$
46bo\$47bo\$46b2o\$46bo\$47bo\$46b2o\$46bo\$47bo\$46b2o\$46bo\$47bo\$46b2o\$46bo\$
47bo\$46b2o\$46bo\$47bo\$46b2o\$46bo\$47bo\$46b2o\$46bo\$47bo\$46b2o\$46bo\$47bo\$
46b2o\$48b2o\$48bo\$50bo\$49b2o\$51b2o\$51bo\$53bo\$52b2o\$54b2o\$54bo\$55bo\$54b
2o\$54bo\$55bo\$54b2o\$54bo\$55bo\$54b2o\$54bo\$55bo\$54b2o\$54bo\$55bo\$54b2o\$54b
o\$55bo\$54b2o\$54bo\$55bo\$54b2o\$54bo\$55bo\$54b2o\$54bo\$55bo\$54b2o\$54bo\$55bo
\$54b2o\$54bo\$55bo\$54b2o\$54bo\$55bo\$54b2o\$54bo\$55bo\$54b2o\$54bo\$55bo\$54b2o
\$54bo\$55bo\$54b2o\$56b2o\$56bo\$58bo\$57b2o\$59b2o\$59bo\$61bo\$60b2o\$62b2o\$62b
o\$63bo\$62b2o\$62bo\$63bo\$62b2o\$62bo\$63bo\$62b2o\$62bo\$63bo\$62b2o\$62bo\$63bo
\$62b2o\$62bo\$63bo\$62b2o\$62bo\$63bo\$62b2o\$62bo\$63bo\$62b2o\$62bo\$63bo\$62b2o
\$62bo\$63bo\$62b2o\$62bo\$63bo\$62b2o\$62bo\$63bo\$62b2o\$62bo\$63bo\$62b2o\$62bo\$
63bo\$62b2o\$62bo\$63bo\$62b2o\$64b2o\$64bo\$66bo\$65b2o\$67b2o\$67bo\$69bo\$68b2o
\$70b2o\$70bo\$71bo\$70b2o\$70bo\$71bo\$70b2o\$70bo\$71bo\$70b2o\$70bo\$71bo\$70b2o
\$70bo\$71bo\$70b2o\$70bo\$71bo\$70b2o\$70bo\$71bo\$70b2o\$70bo\$71bo\$70b2o\$70bo\$
71bo\$70b2o\$70bo\$71bo\$70b2o\$70bo\$71bo\$70b2o\$70bo\$71bo\$70b2o\$70bo\$71bo\$
70b2o\$70bo\$71bo\$70b2o\$70bo\$71bo\$70b2o\$72b2o\$72bo\$74bo\$73b2o\$75b2o\$75bo
\$77bo\$76b2o\$78b2o\$78bo\$79bo\$78b2o\$78bo\$79bo\$78b2o\$78bo\$79bo\$78b2o\$78bo
\$79bo\$78b2o\$78bo\$79bo\$78b2o\$78bo\$79bo\$78b2o\$78bo\$79bo\$78b2o\$78bo\$79bo\$
78b2o\$78bo\$79bo\$78b2o\$78bo\$79bo\$78b2o\$78bo\$79bo\$78b2o\$78bo\$79bo\$78b2o\$
78bo\$79bo\$78b2o\$78bo\$79bo\$78b2o\$78bo\$79bo\$78b2o\$80b2o\$80bo\$82bo\$81b2o\$
83b2o\$83bo\$85bo\$84b2o\$86b2o\$86bo\$87bo\$86b2o\$86bo\$87bo\$86b2o\$86bo\$87bo\$
86b2o\$86bo\$87bo\$86b2o\$86bo\$87bo\$86b2o\$86bo\$87bo\$86b2o\$86bo\$87bo\$86b2o\$
86bo\$87bo\$86b2o\$86bo\$87bo\$86b2o\$86bo\$87bo\$86b2o\$86bo\$87bo\$86b2o\$86bo\$
87bo\$86b2o\$86bo\$87bo\$86b2o\$86bo\$87bo\$86b2o\$86bo\$87bo\$86b2o\$88b2o\$88bo\$
90bo\$89b2o\$91b2o\$91bo\$93bo\$92b2o\$94b2o\$94bo\$95bo\$94b2o\$94bo\$95bo\$94b2o
\$94bo\$95bo\$94b2o\$94bo\$95bo\$94b2o\$94bo\$95bo\$94b2o\$94bo\$95bo\$94b2o\$94bo\$
95bo\$94b2o\$94bo\$95bo\$94b2o\$94bo\$95bo\$94b2o\$94bo\$95bo\$94b2o\$94bo\$95bo\$
94b2o\$94bo\$95bo\$94b2o\$94bo\$95bo\$94b2o\$94bo\$95bo\$94b2o\$94bo\$95bo\$94b2o!
``````

mniemiec
Posts: 1311
Joined: June 1st, 2013, 12:00 am

### Re: Thread for basic questions

wwei47 wrote:
June 15th, 2021, 9:46 pm
This question is a lot harder than it looks. Given a single true object on a 100-by-50 torus (I've already written the object separation algorithms), how would I unwrap it onto an infinite plane? This: ... Would unwrap to this. ...
This isn't really a well-defined function. E.g. if there's a bridge connecting any of the stripes, this may not be possible, if the connections form cycles that wrap entirely around the torus. One can find a solution that works for the limited number of still-lifes that don't include loops like this.

One way to do it is similar to how one might do object separation - i.e. mark one cell as part of an object, and then look at any unmarked cells adjacent to marked ones as part of the same object.

In the same way, mark one arbitrary living cell as being in the corresponding place in the infinite plane (i.e. by tatting it as having a known offset, based on how often one's viewpoint wraps around the torus, and being ininitially 0 for the first chosen tell). Then, expand from marked cells to unmarked cells, adjusting the offset every time you wrap around the torus boundaries. If you ever want to mark a cell with a different offset than it is already marked as, you have found an object that cannot be mapped on to the plane. Once all cells have been mapped without encountering such a problem, you have successfully unwrapped your still life.

wwei47
Posts: 928
Joined: February 18th, 2021, 11:18 am

### Re: Thread for basic questions

mniemiec wrote:
June 15th, 2021, 10:49 pm
Once all cells have been mapped without encountering such a problem, you have successfully unwrapped your still life.
Thanks! What about oscillators or spaceships?

mniemiec
Posts: 1311
Joined: June 1st, 2013, 12:00 am

### Re: Thread for basic questions

wwei47 wrote:
June 15th, 2021, 10:56 pm
mniemiec wrote:
June 15th, 2021, 10:49 pm
Once all cells have been mapped without encountering such a problem, you have successfully unwrapped your still life.
Thanks! What about oscillators or spaceships?
Basically the same thing, except that for oscillators you're effectively dealing with an additional vertical dimension in a cylinder, and you do object-detection and connectivity tracing for 3-dimensional objects. Spaceships are similar, except the connection from the top and bottom are shifted by the spaceship velocity.

A for awesome
Posts: 2397
Joined: September 13th, 2014, 5:36 pm
Location: Pembina University, Home of the Gliders
Contact:

### Re: Thread for basic questions

mniemiec wrote:
June 15th, 2021, 11:44 pm
wwei47 wrote:
June 15th, 2021, 10:56 pm
Thanks! What about oscillators or spaceships?
Basically the same thing, except that for oscillators you're effectively dealing with an additional vertical dimension in a cylinder, and you do object-detection and connectivity tracing for 3-dimensional objects. Spaceships are similar, except the connection from the top and bottom are shifted by the spaceship velocity.
I was about to write up an explanation about using cell connectivity graphs with nodes embedded into 3D spacetime, but it looks like you got here before me! One thing I would say is that spaceships are very tricky on toric grids because the only way they can really be distinguished from wicks/agars/infinite objects just via connectivity graphs is the topology of their embedding, which I doubt is easy to find algorithmically. Probably what I would say is the most practical way (still a slow-ish way sometimes, but it shouldn't be awful) to tell if the wick or agar your program spat out is actually infinite or just a spaceship is to put every phase by themselves on an infinite grid and run them — if any of them are spaceships that match the evolution of the pattern on the torus, your pattern is a spaceship, otherwise it's probably not. Do note that this will miss spaceships that "wrap" more than once around the grid, like, say, a lot of the c/5ds here — there are probably clever tricks that could catch more of these cases, but alas since I don't know how to do any kind of computational topology (is that even a thing?) I don't know of an algorithm that would identify spaceships completely accurately.
praosylen#5847 (Discord)

of flowers, to jump universes to one of springtime in
a land of former winter, where no invisible walls stood,
or could stand for more than a few hours at most...

ihatecorderships
Posts: 107
Joined: April 11th, 2021, 12:54 pm
Location: Falls Church, VA

### Re: Thread for basic questions

Why is the canonical version of the century this:

Code: Select all

``````x = 4, y = 4, rule = B3/S23
b3o\$3bo\$ob2o\$2o!
``````
and not the bookend or the normal B-hept-minus-one cell predecessor?
-- Kalan Warusa

Code: Select all

``````x = 4, y = 4, rule = B2ek3ij4-jnqrz/S23
2b2o\$3bo\$ob2o\$3o!
``````

dvgrn
Moderator
Posts: 8110
Joined: May 17th, 2009, 11:00 pm
Contact:

### Re: Thread for basic questions

ihatecorderships wrote:
June 17th, 2021, 12:18 pm
Why is the canonical version of the century this:

Code: Select all

``````x = 4, y = 4, rule = B3/S23
b3o\$3bo\$ob2o\$2o!
``````
and not the bookend or the normal B-hept-minus-one cell predecessor?
I think that I was the one who picked that form for the Elementary Conduits Collection, and I'm not sure if I had any particularly good reason. It seemed less easy to confuse it with B-heptominoes, maybe, and also it was more likely that the various century predecessors would have settled down to exactly that form. (?)

hotdogPi
Posts: 362
Joined: August 12th, 2020, 8:22 pm

### Re: Thread for basic questions

I use that form of the century when running my program to make sure everything gets counted. I can't find a common predecessor that doesn't reach its standard parent, but I'm sure there is one and I'm not finding it.

MathAndCode
Posts: 4804
Joined: August 31st, 2020, 5:58 pm

### Re: Thread for basic questions

hotdogPi wrote:
June 17th, 2021, 1:46 pm
I use that form of the century when running my program to make sure everything gets counted. I can't find a common predecessor that doesn't reach its standard parent, but I'm sure there is one and I'm not finding it.
I doubt that there's anything common. I've never seen anything converge to the century sequence at the century's great-grandchild.
dvgrn wrote:
June 17th, 2021, 12:45 pm
I think that I was the one who picked that form for the Elementary Conduits Collection, and I'm not sure if I had any particularly good reason. It seemed less easy to confuse it with B-heptominoes, maybe, and also it was more likely that the various century predecessors would have settled down to exactly that form. (?)
Maybe it's done in order to make the name century more accurate?
I have historically worked on conduits, but recently, I've been working on glider syntheses and investigating SnakeLife.

mniemiec
Posts: 1311
Joined: June 1st, 2013, 12:00 am

### Re: Thread for basic questions

ihatecorderships wrote:
June 17th, 2021, 12:18 pm
Why is the canonical version of the century this: ... and not the bookend or the normal B-hept-minus-one cell predecessor?
This sometimes comes up instead of a bookend:

Code: Select all

``````x = 5, y = 4, rule = B3/S23
bboo\$3boo\$bobo\$obo!
``````

A for awesome
Posts: 2397
Joined: September 13th, 2014, 5:36 pm
Location: Pembina University, Home of the Gliders
Contact:

### Re: Thread for basic questions

mniemiec wrote:
June 17th, 2021, 4:38 pm
ihatecorderships wrote:
June 17th, 2021, 12:18 pm
Why is the canonical version of the century this: ... and not the bookend or the normal B-hept-minus-one cell predecessor?
This sometimes comes up instead of a bookend:

Code: Select all

``rle``
As does this, which I find to be more common:

Code: Select all

``````x = 4, y = 4, rule = B3/S23
b3o\$o\$o\$bo!``````
praosylen#5847 (Discord)

of flowers, to jump universes to one of springtime in
a land of former winter, where no invisible walls stood,
or could stand for more than a few hours at most...

MathAndCode
Posts: 4804
Joined: August 31st, 2020, 5:58 pm

### Re: Thread for basic questions

mniemiec wrote:
June 17th, 2021, 4:38 pm
This sometimes comes up instead of a bookend:

Code: Select all

``````x = 5, y = 4, rule = B3/S23
bboo\$3boo\$bobo\$obo!
``````
I've never seen that occur naturally. Can you provide an example?
I have historically worked on conduits, but recently, I've been working on glider syntheses and investigating SnakeLife.

mniemiec
Posts: 1311
Joined: June 1st, 2013, 12:00 am

### Re: Thread for basic questions

MathAndCode wrote:
June 17th, 2021, 6:54 pm
I've never seen that occur naturally. Can you provide an example?
Not that one in particular, but I've seen the related predecessor (where the bookend itself has an open hinge) occur occasionally.

MathAndCode
Posts: 4804
Joined: August 31st, 2020, 5:58 pm

### Re: Thread for basic questions

What are the eight-cell predecessors of a clean very long boat and dirty very long ship that Achim Flammenkamp's census page refers to?
I have historically worked on conduits, but recently, I've been working on glider syntheses and investigating SnakeLife.

dvgrn
Moderator
Posts: 8110
Joined: May 17th, 2009, 11:00 pm
Contact:

### Re: Thread for basic questions

mniemiec wrote:
June 17th, 2021, 7:18 pm
MathAndCode wrote:
June 17th, 2021, 6:54 pm
I've never seen that occur naturally. Can you provide an example?
Not that one in particular, but I've seen the related predecessor (where the bookend itself has an open hinge) occur occasionally.
Looks like mniemiec's variant is just common enough that a natural result shows up in the octohash database -- just one, though!

Code: Select all

``````x = 7, y = 12, rule = B3/S23
b2o\$obo\$bo\$4b2o\$3bo2bo\$3bo2bo\$4b2o3\$4bo\$3b2o\$3bobo!``````

hotdogPi
Posts: 362
Joined: August 12th, 2020, 8:22 pm

### Re: Thread for basic questions

dvgrn wrote:
June 18th, 2021, 7:07 am
Looks like mniemiec's variant is just common enough that a natural result shows up in the octohash database -- just one, though!

Code: Select all

``````x = 7, y = 12, rule = B3/S23
b2o\$obo\$bo\$4b2o\$3bo2bo\$3bo2bo\$4b2o3\$4bo\$3b2o\$3bobo!``````

Code: Select all

``````x = 4, y = 5, rule = B3/S23
bo\$3o\$o2bo\$3bo\$2bo!``````

ColorfulGabrielsp138
Posts: 174
Joined: March 29th, 2021, 5:45 am

### Re: Thread for basic questions

Is there a Herschel conduit that outputs the xp0_16o4 Herschel parent?
Does xp0_16o4 have a known glider synthesis?

Code: Select all

``````x = 21, y = 21, rule = LifeColorful
11.E\$10.3E\$10.E.2E\$13.E4\$2.2B\$.2B\$2B\$.2B15.2D\$19.2D\$18.2D\$17.2D4\$7.C\$
7.2C.C\$8.3C\$9.C!``````
I'm free at last

dvgrn
Moderator
Posts: 8110
Joined: May 17th, 2009, 11:00 pm
Contact:

### Re: Thread for basic questions

ColorfulGabrielsp138 wrote:
June 19th, 2021, 2:28 am
Is there a Herschel conduit that outputs the xp0_16o4 Herschel parent?
Does xp0_16o4 have a known glider synthesis?
I don't know of any conduits that produce much of anything besides 4bo\$5b2o\$obobo\$obo! The only exception I can remember is the Fx158, which produces just 2bo\$3b2o\$obo\$o! instead.

Code: Select all

``````x = 120, y = 48, rule = LifeHistory
86.5D9.D3.5D2.3D\$86.D12.2D3.D5.D3.D\$86.D5.D3.D3.D3.D5.D3.D\$86.3D4.D.D
4.D4.3D3.3D\$86.D7.D5.D7.D.D3.D\$86.D6.D.D4.D3.D3.D.D3.D\$86.D5.D3.D2.3D
3.3D3.3D3\$16.5D9.D3.5D2.3D\$16.D12.2D3.D5.D3.D\$16.D5.D3.D3.D3.D9.D\$16.
3D4.D.D4.D4.3D3.3D\$16.D7.D5.D7.D5.D\$16.D6.D.D4.D3.D3.D.D3.D\$16.D5.D3.
D2.3D3.3D3.3D55.2A\$99.2A12.A\$111.3A\$99.4A7.A\$96.A.A4.A6.2A\$94.3A.2A2.
2A4.4B\$93.A4.B3.4B.3B\$90.A2.4AB2AB3.6B\$90.3A3.A.2AB.7B.B\$93.A4.14B\$
32.2A58.2AB4.12B3.2B\$7.2A24.A58.5B.20B\$8.A13.2A6.3A61.25B\$8.A.AB9.B2A
2B4.A61.28B\$9.2AB.3B6.4B.3B62.28B\$11.7B2.11B7.7B.B44.28B\$11.22B.B3.
29.2BD16B5.5B\$6.3BDBD4B.30B3.2B2.2B30.3BDBD4B.9B6.3B\$7.2B3D4B2.16B2.
10B41.2B3D4B2.7B\$6.5BD4B2.7B.4B7.6B43.5BD4B3.5B\$5.10B4.6B2.2B9.3B44.
10B5.4B\$4.4B11.6B13.B45.4B10.4B.B2A\$4.3B13.3B14.2A45.3B11.2A3.BA.A\$2.
4B12.7B12.A44.4B13.A6.A\$2.2A14.2A.B.2A13.3A41.2A12.3A7.2A\$3.A15.A3.A
16.A42.A12.A\$3A13.3A5.3A53.3A\$A15.A9.A53.A!``````
I also don't think there's a known glider synthesis. I bet someone could come up with one if they really had to, but it's hard to imagine why it would ever be an improvement on a much cheaper standard synthesis. There's nothing for that 2bo\$3b2o\$b2o\$o! active pattern from synthesise_pattern or the octohash database, for example.

bibunsekibun
Posts: 176
Joined: April 17th, 2021, 7:58 pm
Location: TRAPPIST-1e

### Re: Thread for basic questions

Does xp2 with apgcode include xp2 exist in Life?
I'm sleepy
I'm not good at English, so please let me know if you have any grammatical mistakes
My Favorite Pattern is 60P312

ColorfulGabrielsp138
Posts: 174
Joined: March 29th, 2021, 5:45 am

### Re: Thread for basic questions

dvgrn wrote:
June 19th, 2021, 8:04 am
ColorfulGabrielsp138 wrote:
June 19th, 2021, 2:28 am
Is there a Herschel conduit that outputs the xp0_16o4 Herschel parent?
Does xp0_16o4 have a known glider synthesis?
I don't know of any conduits that produce much of anything besides 4bo\$5b2o\$obobo\$obo! The only exception I can remember is the Fx158, which produces just 2bo\$3b2o\$obo\$o! instead.

Code: Select all

``````x = 120, y = 48, rule = LifeHistory
86.5D9.D3.5D2.3D\$86.D12.2D3.D5.D3.D\$86.D5.D3.D3.D3.D5.D3.D\$86.3D4.D.D
4.D4.3D3.3D\$86.D7.D5.D7.D.D3.D\$86.D6.D.D4.D3.D3.D.D3.D\$86.D5.D3.D2.3D
3.3D3.3D3\$16.5D9.D3.5D2.3D\$16.D12.2D3.D5.D3.D\$16.D5.D3.D3.D3.D9.D\$16.
3D4.D.D4.D4.3D3.3D\$16.D7.D5.D7.D5.D\$16.D6.D.D4.D3.D3.D.D3.D\$16.D5.D3.
D2.3D3.3D3.3D55.2A\$99.2A12.A\$111.3A\$99.4A7.A\$96.A.A4.A6.2A\$94.3A.2A2.
2A4.4B\$93.A4.B3.4B.3B\$90.A2.4AB2AB3.6B\$90.3A3.A.2AB.7B.B\$93.A4.14B\$
32.2A58.2AB4.12B3.2B\$7.2A24.A58.5B.20B\$8.A13.2A6.3A61.25B\$8.A.AB9.B2A
2B4.A61.28B\$9.2AB.3B6.4B.3B62.28B\$11.7B2.11B7.7B.B44.28B\$11.22B.B3.
29.2BD16B5.5B\$6.3BDBD4B.30B3.2B2.2B30.3BDBD4B.9B6.3B\$7.2B3D4B2.16B2.
10B41.2B3D4B2.7B\$6.5BD4B2.7B.4B7.6B43.5BD4B3.5B\$5.10B4.6B2.2B9.3B44.
10B5.4B\$4.4B11.6B13.B45.4B10.4B.B2A\$4.3B13.3B14.2A45.3B11.2A3.BA.A\$2.
4B12.7B12.A44.4B13.A6.A\$2.2A14.2A.B.2A13.3A41.2A12.3A7.2A\$3.A15.A3.A
16.A42.A12.A\$3A13.3A5.3A53.3A\$A15.A9.A53.A!``````
I also don't think there's a known glider synthesis. I bet someone could come up with one if they really had to, but it's hard to imagine why it would ever be an improvement on a much cheaper standard synthesis. There's nothing for that 2bo\$3b2o\$b2o\$o! active pattern from synthesise_pattern or the octohash database, for example.
Why did you prefer RLE instead of apgcode?

Code: Select all

``````x = 21, y = 21, rule = LifeColorful
11.E\$10.3E\$10.E.2E\$13.E4\$2.2B\$.2B\$2B\$.2B15.2D\$19.2D\$18.2D\$17.2D4\$7.C\$
7.2C.C\$8.3C\$9.C!``````
I'm free at last

wwei47
Posts: 928
Joined: February 18th, 2021, 11:18 am

### Re: Thread for basic questions

How can I hack dr to create and load save files? I'm sick of losing my progress every single time the power goes out.