## Online Database of Unsuccessful GFIND Searches

For scripts to aid with computation or simulation in cellular automata.

### Online Database of Unsuccessful GFIND Searches

Well, I don't actually have one, but really would like to see something like this; probably here.

'a negative result is still a result'

One of the easiest (lol not really) ways to become famous in the Game of Life is to have the 'gfind' program (found here) running somewhere in the background searching for new spaceship velocities like c/7, 3c/8 etc. But no one actually wants to repeat the searches others have already accomplished, so some sort of collection of such negative results is definitely needed.

For example, I remember a letter by Paul Tooke saying:
At 3c/7 I completed asymmetric up to width 11, glide symmetric up to widths
11&12, bilaterally symmetric up to widths 22 (even), 23 (odd) and 25 (odd
with a central 'gutter' of OFF cells).
...
At 3c/8 and 4c/9 I completed the three bilaterally symmetric modes up to
widths 17, 18 & 19.
(this corresponds to
gfind b3s23/o7n3agv/l154
and
gfind b3s23/o7n3uw/l168
)

But it was a long time ago;
What is the current status of these searches?

Posts: 16
Joined: January 28th, 2010, 5:35 am

### Re: Online Database of Unsuccessful GFIND Searches

This would be a good thing to keep track of, as I have often wondered what searches have already been completed. I wouldn't think such a database would need to be limited to unsuccessful searches. For example, one could find all of the bilaterally-symmetric, period-4, c/4 orthogonal spaceships with a width of 13 (here are the shortest ones; I haven't yet gone through all of them):
x = 192, y = 70, rule = B3/S23180b2o7b2o2$180bo9bo$179b2o9b2o2$165bo13b2o9b2o$165bo16bo5bo$165bo13bo2bo5bo2bo$183bo3bo$163b2ob2o15bo3bo$163b2ob2o13bo7bo$182bobobobo$143b2ob2o15b2ob2o15b2ob2o$142bo5bo13bo5bo15bobo$144bobo17bobo17bobo$141bo2bobo2bo11bo2bobo2bo11b2obobob2o$144bobo17bobo13bobobobobobo$141b2obobob2o11b2obobob2o10b3obobob3o$142bobobobo13bobobobo11b2o2bobo2b2o$142b3ob3o13b3ob3o13b3ob3o$123b2ob2o13b2o5b2o11b2o5b2o11b2o5b2o$123b2ob2o12bobo2bo2bobo9bobo2bo2bobo9bobo2bo2bobo$120b2o2bobo2b2o12b2ob2o15b2ob2o15b2ob2o$121bo2bobo2bo10bo9bo9bo9bo9bo9bo$124bobo14b9o11b9o11b9o$121bob2ob2obo$120b5ob5o14bo19bo19bo$85bo34b2o7b2o8b2o4bo4b2o7b2o4bo4b2o7b2o4bo4b2o$85bo13b3o7b3o9b2obobob2o15bo19bo19bo$103bo3bo16bobo13bo9bo9bo9bo9bo9bo$83b2ob2o11bo4bobo4bo12bobo13b2o7b2o9b2o7b2o9b2o7b2o$100bo9bo9bob2o3b2obo12b5o15b5o15b5o$63bo3bo15b2ob2o13b2obobob2o31bob5obo11bob5obo11bob5obo$64bobo14b3o3b3o13bo3bo12bo9bo14bo19bo19bo$63bo3bo11b4o5b4o10b2o3b2o11b2o2bobo2b2o11b2o3b2o13b2o3b2o13b2o3b2o$40b2o7b2o12b2ob2o11bo11bo11bo3bo12b3obobob3o12bo3bo15bo3bo15bo3bo$61b2obobob2o10b2obo3bob2o10bobo3bobo31bobo3bobo11bobo3bobo11bobo3bobo$40bo9bo10b2obobob2o12bo2bo2bo12b2o5b2o12b3ob3o12b2o5b2o11b2o5b2o11b2o5b2o$39b2o9b2o12bobo16bobobo11b3o7b3o10b2o3b2o10b3o7b3o7b3o7b3o7b3o7b3o$64bobo18bo13b2o9b2o27b2o9b2o7b2o9b2o7b2o9b2o$25bo13b2o9b2o8bo3bobo3bo9bobo5bobo14bo19bo19bo19bo19bo$24b3o15bo5bo12b2obobob2o12bo5bo15b3o17b3o17b3o17b3o17b3o$20b4obob4o8bo2bo5bo2bo12bobo16bo3bo12b4obob4o9b4obob4o9b4obob4o9b4obob4o9b4obob4o$20b2ob2ob2ob2o8bo3bo3bo3bo11b2ob2o14bo5bo11b2ob2ob2ob2o9b2ob2ob2ob2o9b2ob2ob2ob2o9b2ob2ob2ob2o9b2ob2ob2ob2o$21bo2bobo2bo13bo3bo16bobo12b3o7b3o9bo2bobo2bo11bo2bobo2bo11bo2bobo2bo11bo2bobo2bo11bo2bobo2bo$24bobo13bo2bo3bo2bo11bobobobo35bobo17bobo17bobo17bobo17bobo$21bo2bobo2bo11bo2bobo2bo11bo2bobo2bo13bo3bo13bo2bobo2bo11bo2bobo2bo11bo2bobo2bo11bo2bobo2bo11bo2bobo2bo$22b2o3b2o13b2o3b2o13b2o3b2o13b2o3b2o13b2o3b2o13b2o3b2o13b2o3b2o13b2o3b2o13b2o3b2o2$2b2o3b2o13b2o3b2o13b2o3b2o13b2o3b2o13b2o3b2o13b2o3b2o13b2o3b2o13b2o3b2o13b2o3b2o13b2o3b2o$2b2o3b2o13b2o3b2o13b2o3b2o13b2o3b2o13b2o3b2o13b2o3b2o13b2o3b2o13b2o3b2o13b2o3b2o13b2o3b2o$3bo3bo15bo3bo15bo3bo15bo3bo15bo3bo15bo3bo15bo3bo15bo3bo15bo3bo15bo3bo$3b2ob2o15b2ob2o15b2ob2o15b2ob2o15b2ob2o15b2ob2o15b2ob2o15b2ob2o15b2ob2o15b2ob2o2$2bobobobo13bobobobo13bobobobo13bobobobo13bobobobo13bobobobo13bobobobo13bobobobo13bobobobo13bobobobo$bo2bobo2bo11bo2bobo2bo11bo2bobo2bo11bo2bobo2bo11bo2bobo2bo11bo2bobo2bo11bo2bobo2bo11bo2bobo2bo11bo2bobo2bo11bo2bobo2bo$2ob5ob2o9b2ob5ob2o9b2ob5ob2o9b2ob5ob2o9b2ob5ob2o9b2ob5ob2o9b2ob5ob2o9b2ob5ob2o9b2ob5ob2o9b2ob5ob2o$bo7bo11bo7bo11bo7bo11bo7bo11bo7bo11bo7bo11bo7bo11bo7bo11bo7bo11bo7bo$o9bo9bo9bo9bo9bo9bo9bo9bo9bo9bo9bo9bo9bo9bo9bo9bo9bo9bo9bo$2o7b2o9b2o7b2o9b2o7b2o9b2o7b2o9b2o7b2o9b2o7b2o9b2o7b2o9b2o7b2o9b2o7b2o9b2o7b2o2$bo2b3o2bo11bo2b3o2bo11bo2b3o2bo11bo2b3o2bo11bo2b3o2bo11bo2b3o2bo11bo2b3o2bo11bo2b3o2bo11bo2b3o2bo11bo2b3o2bo$bobo3bobo11bobo3bobo11bobo3bobo11bobo3bobo11bobo3bobo11bobo3bobo11bobo3bobo11bobo3bobo11bobo3bobo11bobo3bobo$bobo3bobo11bobo3bobo11bobo3bobo11bobo3bobo11bobo3bobo11bobo3bobo11bobo3bobo11bobo3bobo11bobo3bobo11bobo3bobo$4bobo17bobo17bobo17bobo17bobo17bobo17bobo17bobo17bobo17bobo$2bobobobo13bobobobo13bobobobo13bobobobo13bobobobo13bobobobo13bobobobo13bobobobo13bobobobo13bobobobo2$2bobobobo13bobobobo13bobobobo13bobobobo13bobobobo13bobobobo13bobobobo13bobobobo13bobobobo13bobobobo$3bo3bo15bo3bo15bo3bo15bo3bo15bo3bo15bo3bo15bo3bo15bo3bo15bo3bo15bo3bo$3bo3bo15bo3bo15bo3bo15bo3bo15bo3bo15bo3bo15bo3bo15bo3bo15bo3bo15bo3bo! This wouldn't help in terms of finding new spaceship speeds, but would be useful in enumerating spaceships within certain parameters, or finding small spaceships. ad_ca wrote:What is the current status of these searches? I think I completed unsuccessful searches for bilaterally-symmetric 3c/7 spaceships of width 25 and 26 a couple of years ago, but I'm not entirely sure. I suppose they would be worth checking again (unless someone can verify that those widths have been searched). It would be nice if others would post parameters for their unsuccessful searches. On a related note, has anyone written a script for post-processing of a gfind search to eliminate duplicate spaceships and output everything in a single file? -Matthias Merzenich Sokwe Moderator Posts: 1408 Joined: July 9th, 2009, 2:44 pm ### Re: Online Database of Unsuccessful GFIND Searches This actually would be a nice distributed computing-type project. Have gfind periodically upload results and partial results to a central online database, that somehow catalogs and keeps track of what has and hasn't been completed. I haven't looked at the gfind source code too much, but it seems like a reasonable enough task. Before I take on something like that that I want to finally fix a couple other things around the site and finish uploading LifeLine scans to the LifeWiki. Has anyone here written C scripts that interact with web servers before? I'm fine and dandy with the web server end of things, but my C knowledge is still reasonably amateur. Nathaniel Site Admin Posts: 449 Joined: December 10th, 2008, 3:48 pm Location: New Brunswick, Canada ### Re: Online Database of Unsuccessful GFIND Searches Well, I think that we should give gfind a GUI, for MUCH easier use. I'm good with console C++, by the way! Okay, I'm not THAT good. Alegend Posts: 31 Joined: October 5th, 2009, 3:20 pm ### Re: Online Database of Unsuccessful GFIND Searches gfind is written in pure C, it's cross-platform and its command line is very simple. I don't think a GUI for gfind would actually be useful, unless it would be shipped with some extra features like initial row setting similar to that of ofind (and I do actually want a GUI for ofind, though it's a much more limited program than, for example, WLS). Yeah, distributed computing might be good (especially because of its BFS nature and also a need for a lot of RAM), but I'm not capable of doing this either. On a related note, has anyone written a script for post-processing of a gfind search to eliminate duplicate spaceships and output everything in a single file? I *have* seen it somewhere and even used it, but I don't remember where to find it. I'll try to find it out soon. ad_ca Posts: 16 Joined: January 28th, 2010, 5:35 am ### Re: Online Database of Unsuccessful GFIND Searches Well, I can't really use the command-line version. LOL Alegend Posts: 31 Joined: October 5th, 2009, 3:20 pm ### Re: Online Database of Unsuccessful GFIND Searches Why? What's wrong with it? ad_ca Posts: 16 Joined: January 28th, 2010, 5:35 am ### Re: Online Database of Unsuccessful GFIND Searches Nathaniel wrote:This actually would be a nice distributed computing-type project. Indeed, a distributed effort might actually be able to find something in a reasonable amount of time, provided that it could be split so that multiple branches of the same search could be run simultaneously on different computers (I haven't looked at gfind's algorithm much, so I am not sure how this would be done efficiently). Also, does anyone know how gfind handles repeatable tagalongs such as the following c/4 tagalong? x = 13, y = 83, rule = B3/S233b2o2$4bo$4b2o2$4b2o$7bo$4bo2bo$4bo3bo$8bo$8bo$8b3o$5b3o$12bo$10bobo$7b2o$7bo2bo$7bo2bo$10bo2$10b2o2$10bo$9b2o2$9b2o$7bo$7bo2bo$6bo3bo$6bo$6bo$4b3o$7b3o$2bo$2bobo$6b2o$4bo2bo$4bo2bo$4bo2$3b2o2$4bo$4b2o2$4b2o$7bo$4bo2bo$4bo3bo$8bo$8bo$8b3o$5b3o$12bo$10bobo$7b2o$7bo2bo$7bo2bo$10bo2$10b2o2$10bo$9b2o2$9b2o$7bo$7bo2bo$6bo3bo$7bo$6b2o3bo$8b2obo$8bo$2b2ob2o$5b2obo$bo3bo2b3o$bo3bobobo$5bob2o$2b2obo2$3o4bobo$3o5bo$bo6bo! Alegend wrote:I can't really use the command-line version. After compiling the program, all you need to do is run it from a command-line interpreter with the desired parameters. If you want to look up the parameters that gfind takes, run gfind with "c" as the only parameter. At what point are you having trouble? -Matthias Merzenich Sokwe Moderator Posts: 1408 Joined: July 9th, 2009, 2:44 pm ### Re: Online Database of Unsuccessful GFIND Searches Well, it's just, I don't like the command line, and plus, I didn't start it from the command prompt. Alegend Posts: 31 Joined: October 5th, 2009, 3:20 pm ### Re: Online Database of Unsuccessful GFIND Searches Well, it's just, I don't like the command line A good command-line tool is much better than a bad GUI Sorry for offtopic. I guess I should just write some how-to on gfind searching. I'm running a 4c/9 search right now at l180 (i.e. for asymmetrical ships at width 10, and symmetrical 19-20-21), and it doesn't seem to be too difficult (though it's most probably unsuccessful). ad_ca Posts: 16 Joined: January 28th, 2010, 5:35 am ### Re: Online Database of Unsuccessful GFIND Searches This would be a fantastic idea. As for the 3/7c ship searches mentioned in the first post, I've completed 14 and 15 glide reflect and 24 even with wls with no results. -Josh Ball. velcrorex Posts: 339 Joined: November 1st, 2009, 1:33 pm ### Re: Online Database of Unsuccessful GFIND Searches To add to the 3c/7 results posted earlier I have since completed friutless gfind searches with o7n3l182uvw and o7n3l196u. That last search took nearly a year to complete, so I won't be banging my head against this particular wall any time soon! For the benefit of folks unfamiliar with gfinds options these correspond to width 26 even, 27 odd and 27 odd with a central column of dead cells. That last search would also have found any width 13 asymmetric spaceships. Paul Tooke Posts: 111 Joined: May 19th, 2010, 7:35 am Location: Cambridge, UK ### Re: Online Database of Unsuccessful GFIND Searches n1o9l72a gives me nothing. Increasing the level to 90 is also fruitless, but it takes much longer. I'll try it with up to width 7. Alegend Posts: 31 Joined: October 5th, 2009, 3:20 pm ### Re: Online Database of Unsuccessful GFIND Searches In light of the recent discovery of the copperhead, I've decided to do a broad search in gfind (and zfind) for spaceships of high period. Here are my negative results so far (that aren't already reported on codeholic's page). The text below will be updated occasionally as searches are conducted. Negative results: --(1,1)c/10 asymmetric, diagonal width 6. (g) --(1,0)c/7 even, width 16; odd, width 15. (z) --(1,0)c/10 odd, width 11. (z) --(1,0)c/9 even, width 14. (z) In progress: --(1,0)c/7 width 17 gutter. (g) --(1,0)c/8 width 15 odd. (z) --(1,0)c/9 width 13 odd. (z) --(3,0)c/11 width 13 odd, 14 even. (z) Last edited by thunk on March 11th, 2016, 1:37 am, edited 8 times in total. "What's purple and commutes? The Evanston Express." thunk Posts: 165 Joined: October 3rd, 2015, 8:50 pm Location: Central USA ### Re: Online Database of Unsuccessful GFIND Searches thunk wrote:Here are my negative results so far (that aren't already reported on codeholic's page)... --(1,1)c/10 asymmetric, width 6. I want to point out that a standard gfind search for a diagonal spaceship will use a "diagonal width", while the spaceship search status page uses an "orthogonal width". To see the difference, here are patterns of diagonal width 10 and orthogonal width 10 respectively: x = 40, y = 20, rule = B3/S234bo25b10o$3b3o24b10o$2b5o23b10o$b7o22b10o$9o21b10o$10o20b10o$b10o19b10o$2b10o18b10o$3b10o17b10o$4b10o16b10o$5b10o15b10o$6b10o14b10o$7b10o13b10o$8b10o12b10o$9b10o11b10o$10b9o11b10o$11b7o12b10o$12b5o13b10o$13b3o14b10o$14bo15b10o!

Also, for orthogonal ships, I would avoid searching for asymmetric ships directly. Instead, search for gutter-symmetric ships at the same search width. This should find any asymmetric ships of that search width, while also potentially finding bilaterally-symmetric ships.

For diagonal searches, the gutter search won't cover the asymmetric case, so it might still be worthwhile to do the asymmetric search.

I am currently running the following searches:
• (2,0)c/10 gutter-symmetric width-13
• (2,0)c/10 even glide-symmetric width-12
• (4,0)c/10 even bilaterally-symmetric width-16
-Matthias Merzenich
Sokwe
Moderator

Posts: 1408
Joined: July 9th, 2009, 2:44 pm

### Re: Online Database of Unsuccessful GFIND Searches

Sokwe wrote:I want to point out that a standard gfind search for a diagonal spaceship will use a "diagonal width", while the spaceship search status page uses an "orthogonal width". To see the difference, here are patterns of diagonal width 10 and orthogonal width 10 respectively:

Also, for orthogonal ships, I would avoid searching for asymmetric ships directly. Instead, search for gutter-symmetric ships at the same search width. This should find any asymmetric ships of that search width, while also potentially finding bilaterally-symmetric ships.

For diagonal searches, the gutter search won't cover the asymmetric case, so it might still be worthwhile to do the asymmetric search.

Ah, thank you.
"What's purple and commutes?
The Evanston Express."
thunk

Posts: 165
Joined: October 3rd, 2015, 8:50 pm
Location: Central USA

### Re: Online Database of Unsuccessful GFIND Searches

zdr's "zfind" (what I'm calling it) does indeed seem to be faster at high periods than gfind, finishing the width 16 even c/7 search in less than 3 hours (gfind ran for about two days, and was far from complete). Here is the longest partial reported:

x = 16, y = 46, rule = B3/S232bo10bo$bobo8bobo$bo2bo6bo2bo$2b2o8b2o2$bo12bo$2bo10bo$b2o3b4o3b2o$bo3b6o3bo2$5b2o2b2o$5b2o2b2o$5b2o2b2o$5b2o2b2o$5bob2obo$5bo4bo$4b2o4b2o$5b2o2b2o$6bo2bo3$6b4o$6b4o$6b4o$4bo6bo$4bo6bo$2b2obo4bob2o$b2o4b2o4b2o$b2obo6bob2o$4bo6bo$2b12o$bobob2o2b2obobo$3bo8bo$3b2obo2bob2o$2bo4b2o4bo$5bo4bo$5bob2obo$3bo8bo$2bobob4obobo2$2b2ob6ob2o$5bob2obo$b2ob2ob2ob2ob2o$b2o3bo2bo3b2o$2o2bo6bo2b2o$obob2ob2ob2obobo!

EDIT: Here's a rather long partial from the width 15 odd search (in progress). There's probably a double loafer around here somewhere.

x = 16, y = 61, rule = B3/S234bo5bo$3bobo3bobo$2bo2bo3bo2bo$3b2o5b2o2$5bo3bo$3b4ob4o2$3bobo3bobo$6bobo$3b2o5b2o$4bo5bo$5bo3bo$5bo3bo$6b3o$5bo3bo$4bo5bo$4bobobobo$4b3ob3o$5bo3bo$5b5o$5bo3bo$4bobobobo$4bobobobo$3b4ob4o$2bo3bobo3bo$3bo2bobo2bo$6bobo$5b2ob2o$2b2ob2ob2ob2o$2b2o7b2o2$bobo7bobo$bo2bo5bo2bo$bo2b2o3b2o2bo$4b3ob3o$4b2obob2o$6b3o2$6bobo$5bo3bo$7bo$5bobobo$b2o2b2ob2o2b2o$3bo7bo$o2b2obobob2o2bo$obobo5bobobo$4b2o3b2o$2bo4bo4bo$2b2ob5ob2o$3bo7bo$3bobobobobo$b3ob5ob3o$b2o4bo4b2o$b2o9b2o$b3o7b3o$2o2b2o3b2o2b2o$2bobo5bobo2$2o2b2o3b2o2b2o$2bo9bo! Last edited by thunk on March 10th, 2016, 9:10 pm, edited 2 times in total. "What's purple and commutes? The Evanston Express." thunk Posts: 165 Joined: October 3rd, 2015, 8:50 pm Location: Central USA ### Re: Online Database of Unsuccessful GFIND Searches thunk wrote: x = 16, y = 46, rule = B3/S232bo10bo$bobo8bobo$bo2bo6bo2bo$2b2o8b2o2$bo12bo$2bo10bo$b2o3b4o3b2o$bo3b6o3bo2$5b2o2b2o$5b2o2b2o$5b2o2b2o$5b2o2b2o$5bob2obo$5bo4bo$4b2o4b2o$5b2o2b2o$6bo2bo3$6b4o$6b4o$6b4o$4bo6bo$4bo6bo$2b2obo4bob2o$b2o4b2o4b2o$b2obo6bob2o$4bo6bo$2b12o$bobob2o2b2obobo$3bo8bo$3b2obo2bob2o$2bo4b2o4bo$5bo4bo$5bob2obo$3bo8bo$2bobob4obobo2$2b2ob6ob2o$5bob2obo$b2ob2ob2ob2ob2o$b2o3bo2bo3b2o$2o2bo6bo2b2o$obob2ob2ob2obobo! You've probably noticed this already but the two loaves at the top of the ship are being perturbed by the same "ladle spark" (best name!) as in the normal loafer. This makes me think that this could actually be developed into a tagalong for the loafer. Bored of using the Moore neighbourhood for everything? Introducing the Range-2 von Neumann isotropic non-totalistic rulespace! muzik Posts: 3241 Joined: January 28th, 2016, 2:47 pm Location: Scotland ### Re: Online Database of Unsuccessful GFIND Searches muzik wrote:You've probably noticed this already but the two loaves at the top of the ship are being perturbed by the same "ladle spark" (best name!) as in the normal loafer. This makes me think that this could actually be developed into a tagalong for the loafer. Considering it doesn't have a name yet, that's a good name for it (maybe dipper_?) This post was brought to you by the letter D, for dishes that Andrew J. Wade won't do. (Also Daniel, which happens to be me.) Current rule interest: B2ce3-ir4a5y/S2-c3-y drc Posts: 1664 Joined: December 3rd, 2015, 4:11 pm Location: creating useless things in OCA ### Re: Online Database of Unsuccessful GFIND Searches drc wrote:Considering it doesn't have a name yet, that's a good name for it (maybe dipper_?) The only thing is, it's a parent of this common spark x = 3, y = 2, rule = B3/S23b2o$3o!
Bored of using the Moore neighbourhood for everything? Introducing the Range-2 von Neumann isotropic non-totalistic rulespace!
muzik

Posts: 3241
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Location: Scotland

### Re: Online Database of Unsuccessful GFIND Searches

thunk wrote:zdr's "zfind" (what I'm calling it) does indeed seem to be faster at high periods than gfind, finishing the width 16 even c/7 search in less than 3/4 hours (gfind ran for about two days, and was far from complete).

zfind seems to stop after a certain amount of time based on the "l" parameter. As a result, the it won't be able to eliminate all c/7 width-16 ships unless the "l" parameter is set high enough.

Look at the third-to-last line in the output. If it says "end" then I think the search is complete, but if it says "done", the search only stopped, because the "l" parameter was set too low.

I'm still trying to work my way through the code. It's difficult, because there are no comments and all temporary variables are stored in an array instead of being given unique names.
-Matthias Merzenich
Sokwe
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### Re: Online Database of Unsuccessful GFIND Searches

Sokwe wrote:zfind seems to stop after a certain amount of time based on the "l" parameter. As a result, the it won't be able to eliminate all c/7 width-16 ships unless the "l" parameter is set high enough.

Look at the third-to-last line in the output. If it says "end" then I think the search is complete, but if it says "done", the search only stopped, because the "l" parameter was set too low.

I'm still trying to work my way through the code. It's difficult, because there are no comments and all temporary variables are stored in an array instead of being given unique names.

The c/7 w16 and c/10 w11 runs both finished with "end". "done" also prints if there is a ship.
"What's purple and commutes?
The Evanston Express."
thunk

Posts: 165
Joined: October 3rd, 2015, 8:50 pm
Location: Central USA

### Re: Online Database of Unsuccessful GFIND Searches

thunk wrote:The c/7 w16 and c/10 w11 runs both finished with "end". "done" also prints if there is a ship.

Thanks.

I think the "l" parameter is p*(the maximum length of the spaceship), where p is the period.
-Matthias Merzenich
Sokwe
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### Re: Online Database of Unsuccessful GFIND Searches

Just ran an unsuccessful zfind search on 2c/11 width-12 even-symmetric (it outputted "end", so I think that's definite). Took approximately 45 minutes; here are two partials that looked reasonably good:
x = 38, y = 20, rule = B3/S235b2o21bo6bo$28bo6bo$bo8bo16b3o4b3o$bo8bo$bo3b2o3bo$3bo4bo$2b3o2b3o$2bobo2bobo17b3o4b3o$3bo4bo20bo4bo$bo2bo2bo2bo16b2o6b2o$2o8b2o15b2o6b2o$2obo4bob2o$bobo4bobo17bo6bo$b3o4b3o18bo4bo$2bo6bo20bo2bo$29bo4bo$4b4o19bo2bo2bo2bo$26b3ob4ob3o$28bob4obo$26b3ob4ob3o! Edit: Same negative result with 3c/11, but there's a very promising front end (two of them) on this partial: x = 12, y = 24, rule = B3/S232bo6bo$2bo6bo$bobo4bobo4$b3o4b3o3$b3o4b3o$b3o4b3o$2ob2o2b2ob2o3$2obo4bob2o$bo3b2o3bo$2b2o4b2o$bo2b4o2bo$2bo6bo$3b2o2b2o$2b2o4b2o$obo2b2o2bobo$ob3o2b3obo\$b2o6b2o!
x₁=ηx
V ⃰_η=c²√(Λη)
K=(Λu²)/2
Pₐ=1−1/(∫^∞_t₀(p(t)ˡ⁽ᵗ⁾)dt)

$$x_1=\eta x$$
$$V^*_\eta=c^2\sqrt{\Lambda\eta}$$
$$K=\frac{\Lambda u^2}2$$
$$P_a=1-\frac1{\int^\infty_{t_0}p(t)^{l(t)}dt}$$

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Aidan F. Pierce

A for awesome

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### Re: Online Database of Unsuccessful GFIND Searches

A for awesome wrote:Just ran an unsuccessful zfind search on 2c/11 width-12 even-symmetric (it outputted "end", so I think that's definite). Took approximately 45 minutes; here are two partials that looked reasonably good]

Ah, thank you. I also ran the coprime period 11 and 12 orthogonals (1c/11, 2c/11, 3c/11, 4c/11, 5c/11, 1c/12, 5c/12) mostly to search depth 5 (w5 asymmetric, 9 odd, 10 even, 11 odd) with gfind and zfind.

The exceptions are 1c/11 and 1c/12 asymmetric and gutter (to search depth 4 only).
"What's purple and commutes?
The Evanston Express."
thunk

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