Suggested LifeWiki edits

[dbell]

The 'Moving sawtooth' LifeWiki article is out of date.

Here are three record-breaking sawtooths created after the population 1239 one currently shown in the article:

A moving sawtooth with repeating population of 707 was created by user cloudy197 on 22 April 2011 using a bi-block puffer and a 2c/5 convoy to ignite the blocks.
viewtopic.php?f=2&t=652&p=4578&hilit=mo ... ooth#p4578

A moving sawtooth with repeating population of 624 was created by David Bell on 15 June 2024 using two diagonal period 96 Cordership backrakes receding symmetrically from each other while shooting each other.
viewtopic.php?f=2&t=6258#p187674

A moving sawtooth with repeating population of 584 was created by David Bell on 16 April 2025 using two diagonal period 96 Cordership backrakes receding symmetrically from each other while shooting each other.
viewtopic.php?f=2&t=6258#p210054

-----

The last two sawtooths are very similar, so perhaps it might be unnecessary to show the population 624 one, but only have its date and population mentioned.

I think that the population 707 sawtooth is worth showing since its mechanism is interesting and it held the record for so long. (If shown, it needs to be advanced to be at its minimum population.)

Maybe instead of showing them in this one article, they might have their own articles, such as 'Moving sawtooth 707', etc.

BCNU,
-dbell

[WhiteHawk]

Working through the 180P8s... Edit: think I got all of them

One on p10 domino fountain still needs to be changed

[dbell]

For the 'Space dust' Lifewiki article:

Ironically, a synthesis for the spider spaceship mentioned in the quote HAS been found. Several other spaceships containing some space dust have also been synthesized.

So small patches of space dust are not a barrier to synthesis that they were in the past. Larger patches are still difficult.

BCNU,
-dbell

[dbell]

For the 'Quadratic sawtooth' LifeWiki article:

The repeating minimum population of this sawtooth is 3136 cells, reached at generations 246418, 62915218, ...
(There is a local minimum population of 3122 cells reached at generation 30, but that minimum value never recurs.)

Here is the appearance of the sawtooth at generation 246418.

Code: Select all

#C The quadratic sawtooth at its first repeating minimum population of 3136 cells.
x = 119745, y = 119745
20891b3o$20878bo3boo6bobbo$20869bo7bobobobbo4bobo$20868bobo5boobo4bob
4o3bo$20867bo3bobbo5boo4bobbob3o$20868boboob3o17bo$20869boobboo4bo9b4o
$20869boo8bobbooboboobbobb3o$20869bo16bo8boo77966$27bo$27bo7bo$27bo5b
3o$26boo3bobo$32bobbo$31bobboo$46boo$46boo6$12bo$9b4o41boo$54boo3$12bo
bo$13bo$11boo$11bobbo$10booboo5b3o39boo$19bo3bo38boo$19bo3bo$19bo3bo$b
o$bo7bo10booboo$bo5b3o11bobbo$oo3bobo14bobo$6bobbo13boo27bo$5bobboo10b
o3bo26b3o$19bobobobo24booboo$20bo28boo3bo$50bobobobo$51boobobbo$54boob
o$55boo$44bo$38boo3b3o$36bo5boobbo$41boobboo$9boo3boo20b3o3boo$3bo3b4o
3bobo26b5o$3boboobbobbo3bo30boo$3boboo4bo3boo28bobbo$7bo3bo34boo$12bo
5$8boo$8boo3$26bo$25b3o$24booboo$23boo3bo$16boo6bobobobo$16boo7boobobb
o$28boobo$29boo5$24boo$24boo20238$20318bo$20317boo$20317bobo144$20721b
o$20721b3o$20724bo$20723boo5$20712boo5boo$20712boo5boo$$20716boo$
20716boo4$20739boo$20725bo13boo$20724boboo$20723boobo9boo5boo$20724bo
11boo5boo$$20752boo$20752boo$20721bo$20721b3o$20724bo26b3o$20723boo26b
3o$20724b5o$20725b4o$20724boobboo$20725boboo14boo4boo3boo$20726b3o14b
oo5b5o$20727bo23b3o$20721boo29bo$20721boo$20716boo$20716boo3$20713boo$
20713boo39boo$20754bo$20716boo37b3o$20716boo39bo4$20720b3o$20722bo$
20721bo3$20705b3o$20705bobbo$20704bo3bo$20699boo4bobboo$20698bobo6bo$
20698bo6boo$20697boo5b3o$20704b3o$$20708bo$20709bo$20708boo3$20705boo$
20705boo28$20676boo8bo$20676boo6b3o$20683bo$20668boo13boo$20669bo$
20669bobo$20670boo$20675boo$20675boo$20691bo8boo$20691b3o6boo$20694bo$
20672bo20boo13boo$20671bobo34bo$20672bo33bobo$20706boo$20701boo$20680b
oo19boo$20680boo3$20705bo$20704bobo$20705bo3$20696boo$20696boo29$
20792boo$20792boo3$20795boo$20795boo$$20792boo$20792boo$20784boo$
20785bo$20785bobo15bo$20786boo15bo$20802bobo$20655bo$20654bobo144boo$
20654boobo7boo$20654booboo6bobo133boo$20654boobob3o6bo144boo19boo$
20634boo8boo8bobobbobbobbobbo7boo136bo19bo$20635bo7bobo9bo4boo6bo7boo
136bobo8boo5bobo5bo$20635bobo5bo21bobo147boo8boo5boo4b3o$20636boo4boo
21boo155boo13bo$20632b3o186b3o13boo$20634bo17bobo148boo17boo$20633bo
18boo149boo20boo$20653bo171boo$20800boo18bo$20800boo19boo$20820boo$
20625boo$20624bobo176boo$20614bo11bo10boo9bo154boo27boo3boo34b3o11b3o$
20614bobo20bo9boo185b3o36bobbo10bobbo$20603boo12boo9boo5bobo9bobo8bobo
172bo3bo35bo6b3o4bo$20603boo12boo9boo5boo19bo3bo173bobo36bo5bobbo4bo$
20617boo6boo17boo10bo12boo155bo8bo38bobo6bo4bobo$20614bobo7b3o17bobbo
7bo4bo8boo141boo13bo11bobbo4bobbo27bo$20614bo10boo21bo7bo154bobboo3boo
4b3o9b3obb6obb3o26bo4bo$20628boo18bo7bo3bo149bo8boo18bobbo4bobbo7bo25b
o$20628boo18bo9bobo150bo4bo39b3o15bo7bo$20637boo5bobbo164bo3bo38bo17b
3o5boo$20636bobo5boo167bobo39boo16boboobb3o$20636bo237b3o3bo$20635boo
237boo$20812bo40bo$20792boo18bobo36booboo$20792boo19bo$20850bo5bo$
20788boo5boo$20788boo5boo6bo46booboboo32b3o$20803bobo83bobbo$20803boo
84bo$20889bo$20884bobo3bobo$20799boo50bo6boo6boo15bobbo$20800bo49bobo
4bobbo4bobbo17bo$20797b3o49bobbo3b6obb6o13boo$20797bo51bobo5bobbo4bobb
o$20849bo8boo6boo4$20895boo$20895bobo$20897bo$20856bo40boo$20857bo$
20855b3o31bobo$20890boo$20890bo3$20895boo$20895bobo$20897bo$20897boo7$
20895boo$20895bobo$20897bo22boo$20897boo21boo$20877bobo$20878boo$
20878bo37bobo$20866boo45boo$20866boo15bo28bo5bo$20873b3o5b3o3b3o22bo7b
oo$20873bobbo3bo6bobbo4boo14booboobobboo$20866bo6bo6boo5bo7bobo13boobo
bbo10boo$20865bobo5bo13bo9bo15b4o11bo$20865boobo5bobo11bobo6boo15b3o9b
obo$20865b3o58boo$20865boo44bo$20864boobo41boo$20865b3o6bo35boo$20866b
o6b3o$20873boboo$20874b3o18boo$20874boo19bobo$20897bo$20854bo42boo$
20852boo$20853boo$20909boo$20849boo38b3o17boo$20848bobo38bobbo$20848bo
40bo22boo$20847boo40bo22boo$20855boo33bobo$20855boo44boo$20901boo6boo$
20858boo49boo$20858boo6boo$20866boo36boo$20904boo$20855boo$20855boo6b
oo36boo$20863boo36boo$$20866boo$20866boo5$20902b3o$20868b3o31b3o$
20870bo29boo$20869bo30bobb3o$20918boo$20900bo17bobo$20900bo3boo14bo$
20849boo50bobbo15boo$20848bobo4b3o43bobo8boo$20848bo6bobbo53boo$20847b
oo6bobbo$20909boo$20858bo50boo$20841boo11bo3bo$20841boo12bobo$20856bo
55boo$20912boo$20844boo$20844boo9boo$20847b3o5boo$20841boo3bobbo$
20841boo3bo3bo22b3o$20833boo10bobb3o22bobbo$20834bo11b4o23bo$20834bobo
36bo$20835boo37bobo$20850bobo$20851boo$20851bo$20874bo$20873b3o$20873b
oboo$20874b3o$20874boo4$20852boo$20852boo$20889b3o$20849boo38bobbo$
20849boo38bo$20889bo$20860boo28bobo$20852boo6boo$20852boo$$20857boo37b
oo$20857boo37boo$$20860boo$20860boo37boo$20899boo$$20896boo$20896boo5$
20858b3o32boo$20859bobo31bobo$20858bobbo31bo$20843boo13bobbo$20842bobo
13bobo$20842bo15bobbo$20841boo16boo$20849boo9bo45b3o4boo$20849boo55bo
bbo3bobo$20906boboo5bo$20852boo61boo$20852boo$$20856boo47boo$20849boo
5boo47bobbo$20849boo55b3o$$20859boo$20859boo46boo$20907boo$20856boo$
20856boo6bo$20848boo13boo$20849bo12bo$20849bobo11boo$20850boo11bobo$
20864bo$20864bobo$20868bo$20866bobo5bo$20873b3o$20873boboo$20874b3o$
20874boo4$20867boo$20867boo$20889b3o$20864boo23bobbo$20864boo23bo$
20889bo$20890bobo$20867boo$20867boo202bo$21069b3o$21068bo$21068boo$
20902bobo$20901bobbo4bo$20856boo42boo5boo$20856boo34bo5boo3bo8boo$
20891bobo6boo10boo113bo44boo5boo$20890bo3bo6bobbo122b3o42boo5boo$
20859boo30b3o8bobo125bo$20859boo28boo3boo133boo43bobo$21071boo$20856b
oo106bo104boo5bo$20856boo106b3o102boobo$20848boo13b3o101bo101b4obbo$
20849bo13bo57boo43boo50boo5boo25boo16bo4bo$20849bobo11b3o55boo95boo5b
oo25boo17b4o$20850boo213bobo3boo$20864bo157boo24boo5boo8boo$20864b3o
57bo40boo55boo24boo5boo9bo$20866b3o54bo31boobboo4bobo$20866boo23boo30b
o31boobbo7bo$20891boo66bobo3b3o$20960boo66bobbo13boo$20919boo3boo101b
oobboboo10boo$20886bo35bo103bo4boboo$20884bobo32bo5bo107boo7boo5boo$
20876bo5boo36booboo101boo4bo9boo5boo$20875bobo4boo12boo23bobo58boo44b
ooboo$20867boo5bo3bo3boo12boo24bo59boo$20867boo5b5o5bobo35bo136bo9bo9b
o9bo9bo$20873boo3boo6bo12boo78boo5boo71b3o7b3o7b3o7b3o7b3o$20864boo8b
5o20boo78boo5boo74bo9bo9bo9bo9bo98633boo$20864boo9b3o40bo54bo87boo8boo
8boo8boo8boo98633boo$20876bo41bobo53bo98762bo$20919bobo50b3o98764b3ob
oo$20867boo37boo11bobbo8bobbo56bobbo56bobbo56bobbo98623bobo3bo$20867b
oo37boo11bobo13bo59bo59bo40boo17bo98621boobobobo$20918bobo10bo3bo55bo
3bo55bo3bo13bobbo22boo14bo3bo13bobbo98605bo4bo$20918bo13b4o56b4o56b4o
17bo23bo14b4o17bo98604bob3o$21069bo3bo55bo3bo98603bo3bo$21070b4o56b4o
98603bo3bo$20897boo3boo205b3o98624bo3boo$20875boo98860bo$20875boo21bo
3bo205bobbo14boo98613boo$20899b3o171boo33bobo18bo98607bo5bo$20899b3o
171bo50boo4boo98605bo5bo$21071bobo49boo6bo98608bobo$21071boo49boo7bo
98608bo$20897bo179boo44bo3bobbo98606boobboo$20896b4o176boo50bo98614bo$
20895boobobo177bo98662boo$20884boo8b3obobbo40boo58boo5bobbo49boo5bobbo
49boo5bobbo98608bo$20884boo9boobobo40b4o56b4o8bo47b4o8bo47b4o8bo98605b
o$20896b4o41booboo55booboo3bo3bo47booboo3bo3bo47booboo3bo3bo98604b3o$
20897bo45boo58boo5b4o49boo5b4o49boo5b4o98604boo$$119739boo$21032boo
98703b3obo$21031bobo74bo98627b3o3bo$20891boo5boo8bo20boo5boo7boo86bo
35bo37b3o98629bobo$20891boo5boo7boo20boo5boo101boo5boo17boobobo3boo30b
obobo98629bo$20907b3o35bobo91boo5boo16boob3obobboo30bobobo$20895boo12b
obbobo18boo14bo115b6o36b3o$20895boo12boobobo18boo12booboboo88boo22bo
41bo$20912b3o34boobo89boo$20951bo$20969bob3o9boo5boo116bo$20918boo36b
oo9boobo3bo8boo5boo115b3o$20918boo36boo10bo4boo72boo57bobobo$20969b4ob
o11boo33booboo21boo57bobobo14boo$20915boo5boo29boo5boo24boo32bo5bo70b
oo8b3o15bo$20915boo5boo29boo5boo53boobbo6bo16boo5boo45bobo8bo6bobo5bob
o$21015boo3bo3b3o16boo5boo45bo17bo3bo3boo$21021bo35bobo59bo$20963boo
24boo5boo59boo56bo4bo$20963boo24boo5boo9boo49bo49boo9bo7bo$20911boo36b
oo55boo99bobbo4bo3bo7bo$20911bo37bo9boo5boo25boo13bo3boo12boo26boo53bo
5bobo8b3o$20912b3o35b3o6boo5boo25boo16booboo11bo27bo50b3o$20914bo37bo
58boobbo8b3o25b3o$21011bo3bo8bo27bo73b3o$21011boboo112bo$21012bo3boo
109bo$20970boo44boo109bo$20971bo155bo$20968b3o42boo5boo104b3o$20968bo
44boo5boo$21144boo$21126b3o15bo$21127bo5bo8bobo$21127bo3bobo8boo$
21009boo119bobo$21009bo119bobbo14bo$21010b3o117bobo12b3o$21012bo118bob
o10bo$21133bo10boo5$21127boo$21127bobo9boo3boo$21127bo11boo3boo$$
21141b3o$21137bo3b3o$21136boo4bo$21126boo8bobo$21126boo3$21124boo18boo
$21123bo3bo16bo$21119bo7bo17b3o$21118bo4bo4bo18bo$21119boo3bo3bo$
21125bobo$21126bo5$21114bo$21113bo19boo5boo10bo$21113b3o17boo5boo11boo
$21148bobobo$21137boo9bobo$21109boo26boo$21108bobo$21108bo$21107boo$
21115boo43boo$21115boo43boo$$21118boo37boo5boo$21118boo37boo5boo3$
21115boo$21115boo$21153boo$21153bo$21154b3o$21156bo27$21273boo$21274bo
$21274bobo9bo$21275boo8boo$21284boo4boobboo$21283b3o4boobboo$21284boo
4boo$21285boo$21286bo5$21285boo10boo$21285boo10boo3$21300boo$21300boo
$$21297boo$21297boo7$21287bo$21285b5o$21284b3oboo9bo$21285bobboo8boo$
21286b4o10bo$21287bob3o5b3o14boo$21290bobo5bo15bobo$21268boo12boo8bo
23bo$21267bobo12boo8boo22boo$21269bo38boo$21308boo$$21273boo5boo23boo$
21273boo5boo23boo$$21276boo$21276boo30boo$21308boo3$21209bo43boo6bo$
21207b3o43bobo5b3o$21206bo53bo3bo$21199bo6boo41boo6b3o4bo$21198bobo48b
oo6b3oboboo$21199bo57boo3bo$$21204boo$21204boo5boo$21211boo47boo$
21261bo$21258b3o$21194boo62bo$21194boo$$21209boo$21209bobo$21211bo$
21211boo5$21220boo$21220bo$21218bobo$21218boo$$21203boo$21203boo3$
21145boo73boo$21145boo66boo5boo$21213boo$$21208bo$21207bobo$21208bo6b
oo$21128boo85bo$21128boo86b3o$21145b3o70bo$21144bo3bo$21143bo5bo$
21143booboboo3$21146bo$21145bobo$21125booboboo13bobo$21146boo$21125bo
5bo16bo$21147b3o$21126booboo15bo3bo$21128bo16bob3obo$21141bo4b5o$
21139boo$21140boo3$21131bo$21125b3o4boo$21124bo3bobboo$$21123bo5bo15b
oo$21123boo3boo16bo$21143b3o$21143bo4$21123boo8bo$21124bo6b3o9boo$
21121b3o6bo12bo$21121bo8boo12b3o$21141boo3bo$21140bobo$21142bo3$21125b
oo3boo$21125boo3boo$$21127b3o3b3o$21127b3o5bo$21128bo5bo6$21129b3o$
21129b3o$21128bo3bo$$21127boo3boo10$21130boo$21130boo284$21461bo$
21462boo$21461boo20254$41747boo$41747boo5$41734boo$41733bobbo$41733boo
20boo$41734b5o16boo$41738boo$41735boobboo$41735bobboo$41736b3o$41737bo
$41725boo$41724boboo35boo$41724bobboboo32boo$41725bobobobo$41727bo3boo
$41727booboo$41728b3o$41729bo$$41731bo$41728bobbo$41728bo$41728bobo$
41765booboo$41765bobbo$41767boo$41766bo$41708boo55bobo$41707bobbo$
41707boo$41708b5o$41712boo53b4o$41709boobboo52bo$41701boo6bobboo24bo$
41701boo7b3o26b5o$41711bo26bobobbob3o$41741bo6bo$41738bo3boo4bo$41737b
obo3bo4bo$41738bo6b3o$$41709boo$41709boo14b3o$41725bobbo$41727boo19boo
bbo$41748bobbo$41723bobbo23bobo3boo$41724boo22b3o5bo$41727boo19bo7bo$
41717boo7b3o10booboo12bo$41717boo8bo11bobbo$41724bobbo13boo$41725boo
13bo$41725boo12bobo$$41725b3o$$41741b4o$41741bo!

-----------------

I am not totally sure about the minimum population. I couldn't run it another cycle since it used too much memory. But I did
compare the two instances at population 3136, and the components are all identical, except for the expected larger distances
to the spaceships. So hopefully that pattern would continue. Maybe someone could verify that.

The pattern should probably be advanced 30 generations to show the first local minimum (with the generation numbers adjusted).

Alternatively the pattern could be shown at the true minimum as shown above, but then it would be too large to fit in the viewer.

EDIT:

Perhaps the following adjustment to the sawtooth is worth showing.

It was created by taking the population 3136 object shown above and shifting the Corderships and 2c/5 ships inwards by the largest multiple of 480 generations that fits.

The result is a sawtooth that has no false minimums, and fits nicely in the Life Viewer.

Code: Select all

#C A quadratic sawtooth at its first repeating minimum population of 3136.
#C This is a small adjustment of the original sawtooth.
x = 2353, y = 2353
651b3o$638bo3boo6bobbo$629bo7bobobobbo4bobo$628bobo5boobo4bob4o3bo$
627bo3bobbo5boo4bobbob3o$628boboob3o17bo$629boobboo4bo9b4o$629boo8bobb
ooboboobbobb3o$629bo16bo8boo1054$27bo$27bo7bo$27bo5b3o$26boo3bobo$32bo
bbo$31bobboo$46boo$46boo6$12bo$9b4o41boo$54boo3$12bobo$13bo$11boo$11bo
bbo$10booboo5b3o39boo$19bo3bo38boo$19bo3bo$19bo3bo$bo$bo7bo10booboo$bo
5b3o11bobbo$oo3bobo14bobo$6bobbo13boo27bo$5bobboo10bo3bo26b3o$19bobobo
bo24booboo$20bo28boo3bo$50bobobobo$51boobobbo$54boobo$55boo$44bo$38boo
3b3o$36bo5boobbo$41boobboo$9boo3boo20b3o3boo$3bo3b4o3bobo26b5o$3boboo
bbobbo3bo30boo$3boboo4bo3boo28bobbo$7bo3bo34boo$12bo5$8boo$8boo3$26bo$
25b3o$24booboo$23boo3bo$16boo6bobobobo$16boo7boobobbo$28boobo$29boo4$
78bo$24boo51boo$24boo51bobo144$481bo$481b3o$484bo$483boo5$472boo5boo$
472boo5boo$$476boo$476boo4$499boo$485bo13boo$484boboo$483boobo9boo5boo
$484bo11boo5boo$$512boo$512boo$481bo$481b3o$484bo26b3o$483boo26b3o$
484b5o$485b4o$484boobboo$485boboo14boo4boo3boo$486b3o14boo5b5o$487bo
23b3o$481boo29bo$481boo$476boo$476boo3$473boo$473boo39boo$514bo$476boo
37b3o$476boo39bo4$480b3o$482bo$481bo3$465b3o$465bobbo$464bo3bo$459boo
4bobboo$458bobo6bo$458bo6boo$457boo5b3o$464b3o$$468bo$469bo$468boo3$
465boo$465boo28$436boo8bo$436boo6b3o$443bo$428boo13boo$429bo$429bobo$
430boo$435boo$435boo$451bo8boo$451b3o6boo$454bo$432bo20boo13boo$431bob
o34bo$432bo33bobo$466boo$461boo$440boo19boo$440boo3$465bo$464bobo$465b
o3$456boo$456boo29$552boo$552boo3$555boo$555boo$$552boo$552boo$544boo$
545bo$545bobo15bo$546boo15bo$562bobo$415bo$414bobo144boo$414boobo7boo$
414booboo6bobo133boo$414boobob3o6bo144boo19boo$394boo8boo8bobobbobbobb
obbo7boo136bo19bo$395bo7bobo9bo4boo6bo7boo136bobo8boo5bobo5bo$395bobo
5bo21bobo147boo8boo5boo4b3o$396boo4boo21boo155boo13bo$392b3o186b3o13b
oo$394bo17bobo148boo17boo$393bo18boo149boo20boo$413bo171boo$560boo18bo
$560boo19boo$580boo$385boo$384bobo176boo$374bo11bo10boo9bo154boo27boo
3boo34b3o11b3o$374bobo20bo9boo185b3o36bobbo10bobbo$363boo12boo9boo5bob
o9bobo8bobo172bo3bo35bo6b3o4bo$363boo12boo9boo5boo19bo3bo173bobo36bo5b
obbo4bo$377boo6boo17boo10bo12boo155bo8bo38bobo6bo4bobo$374bobo7b3o17bo
bbo7bo4bo8boo141boo13bo11bobbo4bobbo27bo$374bo10boo21bo7bo154bobboo3b
oo4b3o9b3obb6obb3o26bo4bo$388boo18bo7bo3bo149bo8boo18bobbo4bobbo7bo25b
o$388boo18bo9bobo150bo4bo39b3o15bo7bo$397boo5bobbo164bo3bo38bo17b3o5b
oo$396bobo5boo167bobo39boo16boboobb3o$396bo237b3o3bo$395boo237boo$572b
o40bo$552boo18bobo36booboo$552boo19bo$610bo5bo$548boo5boo$548boo5boo6b
o46booboboo32b3o$563bobo83bobbo$563boo84bo$649bo$644bobo3bobo$559boo
50bo6boo6boo15bobbo$560bo49bobo4bobbo4bobbo17bo$557b3o49bobbo3b6obb6o
13boo$557bo51bobo5bobbo4bobbo$609bo8boo6boo4$655boo$655bobo$657bo$616b
o40boo$617bo$615b3o31bobo$650boo$650bo3$655boo$655bobo$657bo$657boo7$
655boo$655bobo$657bo22boo$657boo21boo$637bobo$638boo$638bo37bobo$626b
oo45boo$626boo15bo28bo5bo$633b3o5b3o3b3o22bo7boo$633bobbo3bo6bobbo4boo
14booboobobboo$626bo6bo6boo5bo7bobo13boobobbo10boo$625bobo5bo13bo9bo
15b4o11bo$625boobo5bobo11bobo6boo15b3o9bobo$625b3o58boo$625boo44bo$
624boobo41boo$625b3o6bo35boo$626bo6b3o$633boboo$634b3o18boo$634boo19bo
bo$657bo$614bo42boo$612boo$613boo$669boo$609boo38b3o17boo$608bobo38bo
bbo$608bo40bo22boo$607boo40bo22boo$615boo33bobo$615boo44boo$661boo6boo
$618boo49boo$618boo6boo$626boo36boo$664boo$615boo$615boo6boo36boo$623b
oo36boo$$626boo$626boo5$662b3o$628b3o31b3o$630bo29boo$629bo30bobb3o$
678boo$660bo17bobo$660bo3boo14bo$609boo50bobbo15boo$608bobo4b3o43bobo
8boo$608bo6bobbo53boo$607boo6bobbo$669boo$618bo50boo$601boo11bo3bo$
601boo12bobo$616bo55boo$672boo$604boo$604boo9boo$607b3o5boo$601boo3bo
bbo$601boo3bo3bo22b3o$593boo10bobb3o22bobbo$594bo11b4o23bo$594bobo36bo
$595boo37bobo$610bobo$611boo$611bo$634bo$633b3o$633boboo$634b3o$634boo
4$612boo$612boo$649b3o$609boo38bobbo$609boo38bo$649bo$620boo28bobo$
612boo6boo$612boo$$617boo37boo$617boo37boo$$620boo$620boo37boo$659boo
$$656boo$656boo5$618b3o32boo$619bobo31bobo$618bobbo31bo$603boo13bobbo$
602bobo13bobo$602bo15bobbo$601boo16boo$609boo9bo45b3o4boo$609boo55bobb
o3bobo$666boboo5bo$612boo61boo$612boo$$616boo47boo$609boo5boo47bobbo$
609boo55b3o$$619boo$619boo46boo$667boo$616boo$616boo6bo$608boo13boo$
609bo12bo$609bobo11boo$610boo11bobo$624bo$624bobo$628bo$626bobo5bo$
633b3o$633boboo$634b3o$634boo4$627boo$627boo$649b3o$624boo23bobbo$624b
oo23bo$649bo$650bobo$627boo$627boo202bo$829b3o$828bo$828boo$662bobo$
661bobbo4bo$616boo42boo5boo$616boo34bo5boo3bo8boo$651bobo6boo10boo113b
o44boo5boo$650bo3bo6bobbo122b3o42boo5boo$619boo30b3o8bobo125bo$619boo
28boo3boo133boo43bobo$831boo$616boo106bo104boo5bo$616boo106b3o102boobo
$608boo13b3o101bo101b4obbo$609bo13bo57boo43boo50boo5boo25boo16bo4bo$
609bobo11b3o55boo95boo5boo25boo17b4o$610boo213bobo3boo$624bo157boo24b
oo5boo8boo$624b3o57bo40boo55boo24boo5boo9bo$626b3o54bo31boobboo4bobo$
626boo23boo30bo31boobbo7bo$651boo66bobo3b3o$720boo66bobbo13boo$679boo
3boo101boobboboo10boo$646bo35bo103bo4boboo$644bobo32bo5bo107boo7boo5b
oo$636bo5boo36booboo101boo4bo9boo5boo$635bobo4boo12boo23bobo58boo44boo
boo$627boo5bo3bo3boo12boo24bo59boo$627boo5b5o5bobo35bo136bo9bo9bo9bo9b
o$633boo3boo6bo12boo78boo5boo71b3o7b3o7b3o7b3o7b3o$624boo8b5o20boo78b
oo5boo74bo9bo9bo9bo9bo1481boo$624boo9b3o40bo54bo87boo8boo8boo8boo8boo
1481boo$636bo41bobo53bo1610bo$679bobo50b3o1612b3oboo$627boo37boo11bobb
o8bobbo56bobbo56bobbo56bobbo1471bobo3bo$627boo37boo11bobo13bo59bo59bo
40boo17bo1469boobobobo$678bobo10bo3bo55bo3bo55bo3bo13bobbo22boo14bo3bo
13bobbo1453bo4bo$678bo13b4o56b4o56b4o17bo23bo14b4o17bo1452bob3o$829bo
3bo55bo3bo1451bo3bo$830b4o56b4o1451bo3bo$657boo3boo205b3o1472bo3boo$
635boo1708bo$635boo21bo3bo205bobbo14boo1461boo$659b3o171boo33bobo18bo
1455bo5bo$659b3o171bo50boo4boo1453bo5bo$831bobo49boo6bo1456bobo$831boo
49boo7bo1456bo$657bo179boo44bo3bobbo1454boobboo$656b4o176boo50bo1462bo
$655boobobo177bo1510boo$644boo8b3obobbo40boo58boo5bobbo49boo5bobbo49b
oo5bobbo1456bo$644boo9boobobo40b4o56b4o8bo47b4o8bo47b4o8bo1453bo$656b
4o41booboo55booboo3bo3bo47booboo3bo3bo47booboo3bo3bo1452b3o$657bo45boo
58boo5b4o49boo5b4o49boo5b4o1452boo$$2347boo$792boo1551b3obo$791bobo74b
o1475b3o3bo$651boo5boo8bo20boo5boo7boo86bo35bo37b3o1477bobo$651boo5boo
7boo20boo5boo101boo5boo17boobobo3boo30bobobo1477bo$667b3o35bobo91boo5b
oo16boob3obobboo30bobobo$655boo12bobbobo18boo14bo115b6o36b3o$655boo12b
oobobo18boo12booboboo88boo22bo41bo$672b3o34boobo89boo$711bo$729bob3o9b
oo5boo116bo$678boo36boo9boobo3bo8boo5boo115b3o$678boo36boo10bo4boo72b
oo57bobobo$729b4obo11boo33booboo21boo57bobobo14boo$675boo5boo29boo5boo
24boo32bo5bo70boo8b3o15bo$675boo5boo29boo5boo53boobbo6bo16boo5boo45bob
o8bo6bobo5bobo$775boo3bo3b3o16boo5boo45bo17bo3bo3boo$781bo35bobo59bo$
723boo24boo5boo59boo56bo4bo$723boo24boo5boo9boo49bo49boo9bo7bo$671boo
36boo55boo99bobbo4bo3bo7bo$671bo37bo9boo5boo25boo13bo3boo12boo26boo53b
o5bobo8b3o$672b3o35b3o6boo5boo25boo16booboo11bo27bo50b3o$674bo37bo58b
oobbo8b3o25b3o$771bo3bo8bo27bo73b3o$771boboo112bo$772bo3boo109bo$730b
oo44boo109bo$731bo155bo$728b3o42boo5boo104b3o$728bo44boo5boo$904boo$
886b3o15bo$887bo5bo8bobo$887bo3bobo8boo$769boo119bobo$769bo119bobbo14b
o$770b3o117bobo12b3o$772bo118bobo10bo$893bo10boo5$887boo$887bobo9boo3b
oo$887bo11boo3boo$$901b3o$897bo3b3o$896boo4bo$886boo8bobo$886boo3$884b
oo18boo$883bo3bo16bo$879bo7bo17b3o$878bo4bo4bo18bo$879boo3bo3bo$885bob
o$886bo5$874bo$873bo19boo5boo10bo$873b3o17boo5boo11boo$908bobobo$897b
oo9bobo$869boo26boo$868bobo$868bo$867boo$875boo43boo$875boo43boo$$878b
oo37boo5boo$878boo37boo5boo3$875boo$875boo$913boo$913bo$914b3o$916bo
27$1033boo$1034bo$1034bobo9bo$1035boo8boo$1044boo4boobboo$1043b3o4boo
bboo$1044boo4boo$1045boo$1046bo5$1045boo10boo$1045boo10boo3$1060boo$
1060boo$$1057boo$1057boo7$1047bo$1045b5o$1044b3oboo9bo$1045bobboo8boo$
1046b4o10bo$1047bob3o5b3o14boo$1050bobo5bo15bobo$1028boo12boo8bo23bo$
1027bobo12boo8boo22boo$1029bo38boo$1068boo$$1033boo5boo23boo$1033boo5b
oo23boo$$1036boo$1036boo30boo$1068boo3$969bo43boo6bo$967b3o43bobo5b3o$
966bo53bo3bo$959bo6boo41boo6b3o4bo$958bobo48boo6b3oboboo$959bo57boo3bo
$$964boo$964boo5boo$971boo47boo$1021bo$1018b3o$954boo62bo$954boo$$969b
oo$969bobo$971bo$971boo5$980boo$980bo$978bobo$978boo$$963boo$963boo3$
905boo73boo$905boo66boo5boo$973boo$$968bo$967bobo$968bo6boo$888boo85bo
$888boo86b3o$905b3o70bo$904bo3bo$903bo5bo$903booboboo3$906bo$905bobo$
885booboboo13bobo$906boo$885bo5bo16bo$907b3o$886booboo15bo3bo$888bo16b
ob3obo$901bo4b5o$899boo$900boo3$891bo$885b3o4boo$884bo3bobboo$$883bo5b
o15boo$883boo3boo16bo$903b3o$903bo4$883boo8bo$884bo6b3o9boo$881b3o6bo
12bo$881bo8boo12b3o$901boo3bo$900bobo$902bo3$885boo3boo$885boo3boo$$
887b3o3b3o$887b3o5bo$888bo5bo6$889b3o$889b3o$888bo3bo$$887boo3boo10$
890boo$890boo284$1221bo$1222boo$1221boo14$1267boo$1267boo5$1254boo$
1253bobbo$1253boo20boo$1254b5o16boo$1258boo$1255boobboo$1255bobboo$
1256b3o$1257bo$1245boo$1244boboo35boo$1244bobboboo32boo$1245bobobobo$
1247bo3boo$1247booboo$1248b3o$1249bo$$1251bo$1248bobbo$1248bo$1248bobo
$1285booboo$1285bobbo$1287boo$1286bo$1228boo55bobo$1227bobbo$1227boo$
1228b5o$1232boo53b4o$1229boobboo52bo$1221boo6bobboo24bo$1221boo7b3o26b
5o$1231bo26bobobbob3o$1261bo6bo$1258bo3boo4bo$1257bobo3bo4bo$1258bo6b
3o$$1229boo$1229boo14b3o$1245bobbo$1247boo19boobbo$1268bobbo$1243bobbo
23bobo3boo$1244boo22b3o5bo$1247boo19bo7bo$1237boo7b3o10booboo12bo$
1237boo8bo11bobbo$1244bobbo13boo$1245boo13bo$1245boo12bobo$$1245b3o$$
1261b4o$1261bo!

The minimum populations are found at generations 0, 734400, 188740800, 48318379200, ...,

BCNU,
-dbell

[jeremydover]

The period 18 glider gun on LifeWiki is the version produced by P1GG; however, in the next forum post after the referenced one, JP21 posts a 14-cell reduction of the gun. Would it be possible to update the Wiki to the optimized version? Thanks!

[dbell]

It would be nice to see some examples of the operations in the 'Signal-channel' and related LifeWiki pages.

I assume a snark-maker example is too large to show in the viewer, but simpler things would still be interesting to see. For example, the push, pull, glider output, and maybe the creation of a hand operations would be small enough to show.

Also, links to other pages which use single-channel constructions could be added (for example, 'Spiral Growth').

BCNU,
-dbell

[dvgrn]

I assume a snark-maker example is too large to show in the viewer, but simpler things would still be interesting to see. For example, the push, pull, glider output, and maybe the creation of a hand operations would be small enough to show.

Oddly enough, the full Snarkmaker can be and is shown in LifeViewer in the Snarkmaker LifeWiki article. That was actually the original reason to add the special PASTET trick to LifeViewer -- see this viewerconfig line in the article:

Code: Select all

#C [[ PASTET 4000 ... ]]

It would be easy to animate a pull, a push, a glider output of each color, and a hand creation in the single-channel article, either using the same PASTET trick or (probably better) by including the complete RLE.

This seems like a great idea to me -- but rather than just do the editing myself, I'd much prefer to train someone who doesn't know how to set up these kinds of animations, but who would like to learn. Any takers?

[dbell]

In the 'Logarithmic growth' LifeWiki article:

It could be mentioned that the pattern by Summers and Nivasch is also a sawtooth with a repeating minimum population of 4496. The minimums are reached just before a full row of blinkers is created preceding every third block push.

Maybe the pattern could also be advanced by 625 generations so that it is shown at its first minimum population.

BCNU,
-dbell

[dbell]

The picture for the 'Much smaller (34,7)c/156 spaceship' LifeWiki article does not show.

BCNU,
-dbell

[confocaloid]

I don't see the point of having a wiki entry LifeWiki:April Fools'. While some people are posting jokes on April 1 every year, trying to catalogue them on the wiki misses the point of such single-day jokes, as well as missing the purpose/scope of the wiki. I suggest to delete the page.

Note also that there is already a Sandbox thread ( viewtopic.php?f=12&t=6926 ), and the Sandbox is probably the only place on this website where such an archive could fit reasonably well.

[hotdogPi]

I don't see the point of having a wiki entry LifeWiki:April Fools'. While some people are posting jokes on April 1 every year, trying to catalogue them on the wiki misses the point of such single-day jokes, as well as missing the purpose/scope of the wiki. I suggest to delete the page.

Note also that there is already a Sandbox thread ( viewtopic.php?f=12&t=6926 ), and the Sandbox is probably the only place on this website where such an archive could fit reasonably well.

This page isn't in mainspace.

[confocaloid]

I noticed that the page isn't in mainspace, but that doesn't change the situation.

As far as namespaces go, it's worth noting that most or all of other pages in the same namespace are actually related to working on the encyclopedia: https://conwaylife.com/wiki/Special:Pre ... amespace=4

This page isn't related to improving the encyclopedia. Instead, it looks like a misguided attempt to "archive" something that wasn't supposed to be archived to begin with, doesn't really belong to the wiki (regardless of namespace), and doesn't contribute to existing knowledge about Life/CA or to understanding of notable topics in the scope or to improving the wiki's coverage of notable topics in the scope.

I don't see the point of having a wiki entry LifeWiki:April Fools'. While some people are posting jokes on April 1 every year, trying to catalogue them on the wiki misses the point of such single-day jokes, as well as missing the purpose/scope of the wiki. I suggest to delete the page. [...]

This page isn't in mainspace.

[KtT]

I found a p22 bi-block hassler so the bi-block hassler article needs to be updated.

[hotdogPi]

The blonker page is pretty barebones. There should be stuff about how it can be used as a sparker or catalyst, but I'm not sure what to add because it seems like it fails whenever I try to use it.

[Resu]

The Much smaller (34,7)c/156 spaceship page is missing images. Can somebody add it?

[Chris857]

Current News: "June 1: David Bell constructs an adjustable-period Cordership-based puffer with a new record minimum period of 249 cells." - shouldn't that be "new record minimum population"?

[Resu]

Could this waveguide be added to the wiki? It seems to be the first known diagonal waveguide, and the third known overall. I doubt that I was actually the first to discover it though, since it is so simple: /forums/viewtopic.php?f=17&t=2036&p=213987#p213949

Code: Select all

#N Diagonal waveguide
x = 80, y = 109, rule = B3/S23
78bo$77bobo$76bobo$75bobo$74bobo$73bobo$72bobo$71bobo$70bobo$69bobo$68b
obo$67bobo$66bobo$65bobo$64bobo$63bobo$62bobo$61bobo$60bobo$59bobo$58b
obo$57bobo$56bobo$55bobo$54bobo$53bobo$52bobo$51bobo$50bobo$49bobo26b
o$48bobo26bobo$47bobo26bobo$46bobo26bobo$45bobo26bobo$44bobo26bobo$43b
obo26bobo$42bobo26bobo$41bobo26bobo$40bobo26bobo$39bobo26bobo$38bobo26b
obo$37bobo26bobo$36bobo26bobo$35bobo26bobo$34bobo26bobo$33bobo26bobo$
32bobo26bobo$31bobo26bobo$30bobo26bobo$29bobo26bobo$28bobo26bobo$27bo
bo26bobo$26bobo26bobo$25bobo26bobo$24bobo26bobo$23bobo26bobo$22bobo26b
obo$21bobo26bobo$20bobo26bobo$19bobo26bobo$18bobo26bobo$17bobo26bobo$
16bobo26bobo$15bobo26bobo$14bobo26bobo$13bobo26bobo$12bobo26bobo$11bo
bo26bobo$10bobo26bobo$9bobo26bobo$8bobo26bobo$7bobo26bobo$6bobo26bobo
$5bobo26bobo$4bobo26bobo$3bobo26bobo$2bobo26bobo$bobo26bobo$obo26bobo
$bo26bobo$bo25bobo$bo24bobo$bo23bobo$bo22bobo$bo21bobo$bo20bobo$bo19b
obo$bo18bobo$bo17bobo$bo16bobo$bo15bobo$bo14bobo$bo13bobo$bo12bobo$bo
11bobo$bo10bobo$bo9bobo$bo8bobo$bo7bobo$bo6bobo$bo5bobo$bo4bobo$bo3bo
bo$bo2bobo$bobobo$b2obo$bobo$obo$bo!

[dbell]

In the "snake" LifeWiki article, some text could be added to say that a snake is the smallest object that can support the "boat-bit" reaction.

BCNU,
-dbell

[dbell]

Here are several related suggested edits:

------------

In the "Gosper glider gun" LifeWiki article:

The original 13-glider synthesis could be shown since it is the first synthesis of a gun. (I don't want to have to log in to Scientific American to read the article containing it.)

The 8-glider synthesis could also be shown since it is the record holder for synthesizing a gun. (I shouldn't have to go to Catalogue to find it).

Finally, this is one of several similar final steps to synthesize a gun with 12 gliders. I don't know how close this is to the 13-glider synthesis. If the 13-glider one doesn't use ships, then this one could be shown too. Maybe this could be backtracked to show all the gliders.

Code: Select all

x = 36, y = 4
oo9boo9boo4bo$oo3boo4bobo8bobobbo6boo$6boo4boo9boobb3o4boo$5bo!

------------

In the "ship" LifeWiki article:

It could be mentioned that one of the reactions between a ship and a glider makes a clean queen bee, and this allows a simple method to synthesize a Gosper glider gun.

Code: Select all

x = 8, y = 3
oo4bo$obobbo$boobb3o!

------------

In the "Queen bee" LifeWiki article:

Within the "Formation" section, the above collision between a glider and a ship could be added.

BCNU,
-dbell

[dbell]

It might be nice to add a new category of sawtooth to the LifeWiki.

This is the "anchored sawtooth", where some part of the sawtooth always remains within some bounding box. The oldest and the smallest sawtooths fall within this category, for example "Sawtooth 1212" and "Sawtooth 168".

The previous sawtooth category was the "Moving sawtooth", describing either of the newer "Expanding sawtooth" and "Sawtooth spaceship" sub-categories.

These types are distinguished by their behavior with respect to various bounding boxes.

BCNU,
-dbell

[rabbit]

Cis-barge with tail should mention that it can be struck by a glider to produce a pulsar in a very tight area, as in this reaction used in synthesis sometimes:

Code: Select all

x = 9, y = 8, rule = B3/S23
2o$b2o$o3bo$4b3o$7bo$6bobo$5bobo$6bo!

Here's an example if a citation is needed.

[Chris857]

The "July 9 Caleb R. Hilton discovers a new elementary Herschel conduit" news item links to a post in the "Cordership Discussion Thread" instead of something appropriate, though I'm not sure where it should actually link to.

[ThePlayzr]

The command {{Small constructible periodic object}} says "All strict still lifes with a population of 22 or fewer cells, all oscillators with 16 or fewer cells, and all spaceships with 33 or fewer cells are known to be glider-constructible. A glider synthesis of this object can be found in the infobox to the right.", but spaceships up to 35 cells are known to be glider-constructible.

[Chris857]

Should https://conwaylife.com/wiki/May13 be moved to https://conwaylife.com/wiki/Dmitry_Maitak based on https://conwaylife.com/wiki/User:77topa ... dles_table?

[PK22]

Tutorials/Glider syntheses states that transfer.py "will only attempt to synthesise objects that either already have a synthesis or are strict still lifes with 20 bits or less". However, as all strict still lifes up to 22 bits (likely to be 23 soon!) have been synthesised, is the second half unncecessary since all still lifes with 20 bits or less already have a synthesis?