Re: Thread for basic questions
Posted: May 23rd, 2016, 11:19 am
I need an example. Like, now. This sounds amazing.calcyman wrote:Yes, there are even configurations which fire an infinite sequence of distinct spaceships.
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I need an example. Like, now. This sounds amazing.calcyman wrote:Yes, there are even configurations which fire an infinite sequence of distinct spaceships.
It's probably less exciting than you think. We know such a thing exists, and we know how to make one, but we haven't done it yet. The plan that I assume is being alluded to above involves creating a pattern that fires UC-based spaceships, with each one being extended trivially to be slower than the last by moving one section of the ship a little bit farther away from the rest of the ship.muzik wrote:I need an example. Like, now. This sounds amazing.calcyman wrote:Yes, there are even configurations which fire an infinite sequence of distinct spaceships.
A sort-of example:muzik wrote:I need an example. Like, now. This sounds amazing.calcyman wrote:Yes, there are even configurations which fire an infinite sequence of distinct spaceships.
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x = 8, y = 5, rule = 0/2/3
5.AB$AB2.AB$AB.AB.A$.AB2.AB$6.AB!
All are terms borrowed from chemistry:lifeisawesome wrote:What does (cis, trans, ortho, para) mean when naming patterns?
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x = 161, y = 39, rule = B3/S23
96bo31bo$89b4o8b4o21b5obob2o3b4ob4o3b4o$88bo7bo3bo5b5o17bo3b2o2bobo3bo
bo3bobo5b5o$88bo7bo4b3o24bo3bo5bo3bobo3bo2b3o$88bo7bo7bo23bo3bo5bo3bob
o3bo5bo$89b4o3b2o2b4o25b2obo6b4obo3bob4o7$o47bo30b2o55b2o$o19bo17bo5bo
3bo13bo11bo5bo16bo38bobo$4o3b3o3b4ob5o7bo3bo7b5obob2o8b5o2b4o9bo15bobo
38bobo$o3bobo3bobo3bo3bo3b5obo3bo3bo5bo3b2o2bob5o3bo3bo3bo3bo5bo15b2ob
o39bo$o3bobo3bobo3bo3bo9bobobo3bo5bo3bo3bo9bo3bo3bo3bo5bo18bo39b2o$o3b
obo3bobo3bo3bo9b2ob2o3bo5bo3bo3bo9bo3bo3bo3bo5bo18b2o$4o3b3o3b4o4b2o7b
o3bo3b2o5b2obo3bo10b2o2b4o3b2o4b2o14$b2o17b2o26bo30b2o56bo$2bo16bo2bo
15bo5bo3bo13bo11bo5bo16b2o37bobo$2bo4b3o3b4o2bo10bo3bo7b5obob2o8b5o2b
4o9bo15bo2bo36bo2bo$2bo3bo3bobo3bob3o3b5obo3bo3bo5bo3b2o2bob5o3bo3bo3b
o3bo5bo15bobobo36b2obo$2bo3bo3bobo3bo2bo10bobobo3bo5bo3bo3bo9bo3bo3bo
3bo5bo16bo2bo39bo$2bo3bo3bobo3bo2bo10b2ob2o3bo5bo3bo3bo9bo3bo3bo3bo5bo
19b2o38b2o$2b2o3b3o3b4o2bo10bo3bo3b2o5b2obo3bo10b2o2b4o3b2o4b2o!
#C [[ VIEWONLY ]]
To me it is pretty natural. In the cis configuration it looks like the loaf (maybe the center of mass?) is on the same side of the tail, which is down. If there is a way to calculate the "standard deviation" of the cells, then I think it can be defined formally.dvgrn wrote: I don't understand the extension to loaf-with-tails at all. It seems to be the key part of the loaf is opposite (trans) in the cis-loaf-with-tail, and nearby (cis) in the trans-boat-with-tail. If someone can explain that clearly with nice short words, I'll happily put the explanation in the Life Lexicon -- maybe a general summary of uses of cis- and trans-,
Whoa. I know you have probably moved on from that ship to other things, but I suddenly have a lot of questions about the ship:muzik wrote: Of course, this is not always the case, as in this compact orthogonal c/5648:Code: Select all
x = 12, y = 14, rule = B3457/S4568 4bo2bo$4b4o$2b8o$2b2ob2ob2o$obobo2bobobo$2ob6ob2o$ob3o2b3obo$3ob4ob3o$ 2ob6ob2o$b3o4b3o$b3o4b3o$3b2o2b2o$3bo4bo$5b2o!
It comes from a pretty explosive rule, and there are no smaller gliders, so I'm not sure if there would be any (small enough) guns for it (patterns also tend to stick to each other in this rule, so the ship would be kind of hard to seperate)Gamedziner wrote: Whoa. I know you have probably moved on from that ship to other things, but I suddenly have a lot of questions about the ship:
1. What is it called?
2. How was it discovered?
3. Are there any known guns that can produce it (I'd imagine they'd be pretty big or have to move constantly)?
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x = 42, y = 84, rule = B3/S23
20b2o2b2o$6bo13b2o2bo$4bo3bo9b2o5bo$3bo14b2o4b2o$3bo4bo$3b5o16b2o$24bo
$19bob2obo$19b2obob2o$4b2o$3b2ob3o$4b4o$5b2o2$8b2o$6bo4bo$5bo$5bo5bo$
5b6o8$22b2obo2b2o$22bob2o2b2o2$28b2o$22b2obo3bo$10b4o8bob2o2bo$10bo3bo
13b2o$10bo$b2o8bo2bo7bob2o2b2o$2ob2o17b2obo2b2o$b4o3bo$2b2o3bob2o$6bo
3bo$2b2o3bob2o$b4o3bo$2ob2o$b2o8bo2bo$10bo$10bo3bo$10b4o13$24b2obob2o$
4b2o18bob2obo$2bo26bo$bo6bo20b2o5b2o2b2o$bo8bo25b2o2bo$b8obo13b2ob4o3b
2o5bo$6b2o17bobo2bo3b2o4b2o$25bo$24b2o14b2o$2b2o36bo$b2ob2o18b4ob2o4bo
b2obo$2b4o3bo14bo2bob2o4b2obob2o$3b2o3bobo2b2o$7bo3b2o2bo$3b2o3bobo2b
2o$2b4o3bo$b2ob2o$2b2o3$6b2o$b8obo$bo8bo$bo6bo$2bo$4b2o!
Spaceships do not produce switch engines, these would be puffers/breeders.alvinpark wrote:which spaceship produce switch engine ?
It's certainly possible. There isn't even any way to definitively rule out some really unlikely way to burn the debris from a block-laying switch engine cleanly at a speed of exactly c/12... so we can't definitively rule out the possibility that the true record-smallest Cordership is just one switch engine plus some trailing junk.muzik wrote:1: Could a c/12 diagonal (corder)ship smaller than the current record holder 134-cell Cordership exist?
Late reply I know, so does this mean one cannot exist in normal Life (but can in other specialised cellular automaton)?Sphenocorona wrote:There isn't really any limit to this as far as I'm aware, though it must be remembered that the actual long-term population growth rate in an n-dimensional CA cannot exceed nth degree polynomial growth (2nd degree is quadratic, 3rd degree is cubic, etc). But we can still make things that act like what you've described. For example, I found a quadratic-growth MMMM 'super-breeder' in an old rule known as aurora19 a few years back. I'm sure there's some other examples out there.muzik wrote:What is the highest "dimension" of an infinite growth pattern created?
It probably is, but the final rakes' output cannot last forever; the output must be destroyed eventually to maintain a quadratic growth rate at most.muzik wrote:So, I take it it's not possible to build a moving pattern that creates moving patterns which create rakes?
Yeah, there's no technical difficulty in building such a pattern -- except for dying of boredom or frustration in the design stage. It's just that when you run the pattern, you might get a massive mess after a while, as you suggested.A for awesome wrote:It probably is, but the final rakes' output cannot last forever; the output must be destroyed eventually to maintain a quadratic growth rate at most.muzik wrote:So, I take it it's not possible to build a moving pattern that creates moving patterns which create rakes?
Wait, wouldn't that mean you could add in diagonal or oblique rakes, rakes of rakes, etc?dvgrn wrote:For example, an East-moving object could build regularly spaced North-moving rake builders, each of which would start building regularly-spaced West-moving rakes. So far so good! It's not a problem that more and more rakes will be created simultaneously, as time goes on -- they're all traveling West at the same speed, so they'll stay out of each other's way.
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x = 4, y = 3, rule = B36ce7c_S23-y
2o$obo$2b2o!
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x = 4, y = 3, rule = tlife
3o$3o$3bo!
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x = 22, y = 21, rule = B38/S23
4$4b3o$4bo3bo$3b2o3bo$2b2o5bo$2b2o2b2o2bo$8bobo$9bo!
Yeah, I could build one. But it would be a big self-constructing and self-destructing thing.muzik wrote:Are there any statorless rotating oscillators, etc in normal Life?...
All hail the almighty universal constructor argument.dvgrn wrote:Yeah, I could build one. But it would be a big self-constructing and self-destructing thing.muzik wrote:Are there any statorless rotating oscillators, etc in normal Life?...
At least it would give an (unreasonable) upper bound of some sort. So then the question becomes, what is the smallest such statorless rotating oscillator?
... Unfortunately having an upper bound doesn't make it an answerable question. The smallest one could be quite small, findable by running a hacked apgsearch for a few decades... or the smallest one could actually be a hyper-optimized self-constructing thing that encodes its own pattern in some clever way.
There's no way to know, unless it turns out that the smallest one fits in an MxN box, with M and N small enough that technology eventually advances to allow us to exhaustively search the space.
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x = 3, y = 4, rule = salad
o$2o$b2o$2bo!
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x = 18, y = 20, rule = B3/S23
3bo$3bo$2b2obo9b3o$bo3b2o6bob3o$obo9bobobo$o2bo8bo2bo$b2o10b2o6$4b3o2$
3bo4bo$2bobo3bo$2bo2bo2bo$b2o3bo$3b3o$3bo!
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x = 9, y = 9, rule = Life
4bo$4bo$4b2o$6bo$3o2bo2bo$2bobo3bo$3bo4bo2$4b3o!
yep, that's 2 pulsar quadrants.drc wrote:Well, this oscillator uses just a fuse:Code: Select all
x = 9, y = 9, rule = Life 4bo$4bo$4b2o$6bo$3o2bo2bo$2bobo3bo$3bo4bo2$4b3o!
Brice Due called it a "honeybit buffer", because of the ability of the same small constellation to store information -- set with a glider, test or reset with an LWSS:Rhombic wrote:I read a couple of days ago about a pond and block collocation that could eat HWSS xor MWSS, but I don't remember how it was. I have already tried looking for it on LifeWiki, but since it was neither a still life nor a pseudo-still life or any notable pattern per se, my attempts have been useless. Could someone remind me of how it was?
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x = 76, y = 42, rule = B3/S23
24bo$25bo$23b3o4$71b4o$71bo3bo$71bo$72bo2bo7$34b2o$33bo2bo$34b2o16$35b
2o$b6o15b2o10bo2bo$o5bo11b4ob2o9bo2bo$6bo11b6o11b2o$o4bo13b4o$2b2o$34b
2o$34b2o!