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Re: Suggested LifeWiki edits

Postby GUYTU6J » August 5th, 2019, 6:38 am

Apologies from a newcomer - This page and this are created accidentally. Can someone delete them?
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Re: Suggested LifeWiki edits

Postby Ian07 » August 5th, 2019, 11:39 am

GUYTU6J wrote:Apologies from a newcomer - This page and this are created accidentally. Can someone delete them?

Sure, done now.
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Re: Suggested LifeWiki edits

Postby GUYTU6J » August 8th, 2019, 12:47 pm

The wiki page for Hook with tail wrote:Note that, despite its name, this pattern is not truly a bookend with a tail.

:?:
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Re: Suggested LifeWiki edits

Postby Ian07 » August 8th, 2019, 1:33 pm

GUYTU6J wrote:
The wiki page for Hook with tail wrote:Note that, despite its name, this pattern is not truly a bookend with a tail.

:?:

This is an artifact from before hook (the 4-cell pattern found in the still life) had its own article. I've just removed it.
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Re: Suggested LifeWiki edits

Postby GUYTU6J » August 8th, 2019, 9:19 pm

  • In the clearance page, the pattern doesn't show directly how the eater "allows gliders to pass one lane closer on the southeast side". The comparison can be made:
    x = 33, y = 22, rule = B3/S23
    bo19bo$2bo19bo$3o17b3o4$14b2o$11b2o2bo$12bobo$12bob2o$9b2obo16b2o$9bo
    2bo16bo$10b2o18b3o$32bo6$9b3o18b3o$11bo20bo$10bo20bo!

    Moreover, given "Fx119 inserter has an unusually high 27hd clearance", I suppose "...allows gliders to pass one lane closer on the southeast side" need to be modified to "allows gliders to pass one lane(or, equivalently, 1hd) closer on the southeast side".
  • In the glider gun page, there is no need for such a specific sentence as "a period 435 glider gun is shown using Karel's p15".
  • In the eater 2 page, there is a red link to "gliderless gun 1". Is it for the following pattern taken here?
    x = 44, y = 51, rule = B3/S23
    17b2o6b2o$17b2o6b2o7$b2o38b2o$obo38bobo$obob2o32b2obobo$bobobo32bobobo
    $3bo36bo$bo2bo13b2o4b2o13bo2bo$4bo12bobo4bobo12bo$o3bo12bo8bo12bo3bo$o
    3bo12bobo4bobo12bo3bo$4bo13b2o4b2o13bo$bo2bo34bo2bo$3bo36bo$bobobo32bo
    bobo$obob2o32b2obobo$obo38bobo$b2o25bo12b2o$26b2o2bobo$28bo2bobo$30b2o
    $15b2o$16bo$13b3o$13bo8bo4bo6b2o$18b2o2bo3bobo5bobo$18bo7bobo7bo$19bo
    3bo3b2o7b2o$23bo5$31b5o$30bo4bo$35bo$30bo3bo$32bo$23bob2o$21b3ob2o$20b
    o$21b3ob2o$23bobo$23bobo$24bo!

    Also, where is its first discovery?

    EDIT:
  • Given "a fake 87-glider synthesis (actually a clever LifeViewer loop) was posted by Dave Greene on April Fools' Day 2018" in the Sir Robin page, the loafer page should mention dvgrn's soup:
    x = 16, y = 16, rule = B3/S23
    bbbobbobobooboob$
    booobbobbbbbbooo$
    obbbooboboobbobb$
    bobbobbobbbboboo$
    bbbbbobbobbbbbob$
    oobbobobobobobbo$
    bbbooobobbobbobb$
    bbooobbobooobobb$
    oobbbbbbbbobbobb$
    obbbobooobbooboo$
    bbobboooobboobob$
    boobbbbbbbbbbboo$
    boooobbbboobbbob$
    obb5obbbobbbobbb$
    bbbboobobooobobb$
    oobbboboboobbboo!

  • Should the mango page mention calcyman's explanation about "havoc"?
  • Xp2 2a54 b3js1.gif
    Xp2 2a54 b3js1.gif (5.5 KiB) Viewed 1285 times
    needs to be embedded to the clock page.
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Re: Suggested LifeWiki edits

Postby Gustone » August 12th, 2019, 2:52 pm

Did you know...

15. ... that the first spaceship found in Conway's Game of Life that travels in an oblique direction was discovered in 2018?
I like making color palettes for rules
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Re: Suggested LifeWiki edits

Postby dvgrn » August 12th, 2019, 3:18 pm

Gustone wrote:Did you know...

15. ... that the first spaceship found in Conway's Game of Life that travels in an oblique direction was discovered in 2018?

Nah, we can leave that as it is -- 2010 is correct. The Gemini is a perfectly valid spaceship, just not an elementary one. We already have a Did-you-know #66 for Sir Robin.
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Re: Suggested LifeWiki edits

Postby muzik » August 24th, 2019, 6:27 pm

Can someone make some more consistent images of the circular neighbourhood that Golly and LifeViewer use for this page?

http://www.conwaylife.com/wiki/Gallery_ ... hbourhoods
Bored of using the Moore neighbourhood for everything? Introducing the Range-2 von Neumann isotropic non-totalistic rulespace!
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Re: Suggested LifeWiki edits

Postby Saka » August 29th, 2019, 7:20 am

I think there's something wrong with Zone of influence?
Last edited by dvgrn on August 29th, 2019, 8:08 am, edited 1 time in total.
Reason: fixed broken link
If you're the person that uploaded to Sakagolue illegally, please PM me.
x = 17, y = 10, rule = B3/S23
b2ob2obo5b2o$11b4obo$2bob3o2bo2b3o$bo3b2o4b2o$o2bo2bob2o3b4o$bob2obo5b
o2b2o$2b2o4bobo2b3o$bo3b5ob2obobo$2bo5bob2o$4bob2o2bobobo!

(Check gen 2)
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Re: Suggested LifeWiki edits

Postby dvgrn » August 29th, 2019, 8:35 am

Saka wrote:I think there's something wrong with Zone of Influence?

Yes, that definition -- copied straight from the dictionary page on pentadecathlon.com -- has caused a lot of confusion over the years. The definition is clear enough, but it's not at all clear what the concept of "zone of influence" is actually good for. There's an old forum thread started by Nathaniel, but there don't seem to be any definite conclusions there.

Here's my standard counterexample to show that the missing corners in the range-2 "zone of influence" can actually affect the center cell in some cases. (In other words, lightspeed diagonal communication is perfectly possible).

> What is the shape of the "zone of influence" after an arbitrary
> number of gens?

A big square with side 2t+1. Simple example: look at a square, any size, with a diagonal fuse -- just one semi-infinite line of cells -- cutting it in half and ending at one of the corners. Whether that corner cell at (t,t) is OFF or ON will affect the state of the center cell at time t. And there seems to be no shortage of possible ways for similar lightspeed effects to travel through busier and/or more heavily populated patterns.

So the pentadecathlon.com "zone of influence", if it's a useful concept at all, must be related to some additional unstated premise or other.

Maybe it's something like this?

"If a cell's range-N Zone of Influence consists entirely of OFF cells at T=0, then the cell will still be OFF at T=N."

But is the Zone of Influence, as it's currently defined, the minimum set of cells for which the above statement is always true? Seems like the region could be reduced to a simple radius-N diamond in that case.

EDIT: Found a discussion about this from April 2005 in my old emails. HK's response seems to say that the pentadecathlon.com definition may or may not be useful above N=2:

Heinrich Koenig wrote:"Zone of Influence":

This is based on my studying of P2 oscillators, and may be more
specific to that than I thought. In my playing around with them,it
seems obvious that the corner has no influence over the "shape" of
oscillators...

The way I think of it is that each cell has multiple paths from the
center cell to every cell within the zone. Every cell in the zone of
Order 2 has at least 2 such paths. The corners have only one
possible, the exact diagonal. You get Order 3 by applying Order 2 to
the outer edge cells. Now I haven't put as much time into P3
oscillators, so I'm not sure if the corners should be clipped as
shown, or only the actual corners.
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Re: Suggested LifeWiki edits

Postby GUYTU6J » September 2nd, 2019, 7:15 am

Repost:
In the eater 2 page, there is a red link to "gliderless gun 1". Is it for the period-44 MWSS gun?
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Re: Suggested LifeWiki edits

Postby dvgrn » September 2nd, 2019, 11:29 am

GUYTU6J wrote:Repost:
In the eater 2 page, there is a red link to "gliderless gun 1". Is it for the period-44 MWSS gun?

Hmm, that link has been "Gliderless gun 1" since Nathaniel invented the page back in 2009. I'm not finding any uses of the term "gliderless gun 1", though I may be missing something of course. I've changed that link to point to the period-44 MWSS gun.

The gliderless-guns category seems to owe its existence to a question posted by Dieter Leithner:

On 9 August 1996, Dieter Leithner wrote:Are other glider-less spaceship factories known?

Before Dieter and Peter started their gun-collecting work, it seems like guns of any kind were rare enough that nobody really thought they needed subcategories -- e.g., there were no odd-period guns of any kind until 1995. Paul Callahan was hunting for gliderless spaceship outputs from p30 and p46 shuttles back in March 1995, but I don't think a "gliderless gun 1" came out of that project, just more glider guns.

Anyway, the alias "gliderless gun 1" wouldn't be appropriate for the p44 MWSS gun. It wasn't discovered until April 1997; Dieter's p46 LWSS gun showed up the previous year, in the above August 9 posting (but it doesn't have eater2s in it, so that can't have been the intention of the link):

#N period-46 gliderless LWSS gun
#O Dieter Leithner, 9 August 1996
x = 60, y = 70, rule = B3/S23
18b2o5b2o$18b2o5b2o13$18b2o5b2o$17bo2bo3bo2bo19b4o$18bo2bobo2bo4b2o14b
o2b2o6b2o$21bobo7b2o15bo2b2o5b2o$19b3ob3o22bo2bo$17b3o5b3o21b2o$17b2o
7b2o5bo3bo$17b2o7b2o4bobobobo10b2o$18bob2ob2obo3b2o2bobo2b2o7bo2bo$18b
3o3b3o3b2o7b2o7bo2b2o5b2o$19bo5bo4b2o2bobo2b2o6bo2b2o6b2o$32bobobobo8b
4o$33bo3bo$18b2o$18b2o5$32bo2bo$36bo19b4o$32bo3bo18bo3bo$33b4o22bo$15b
2o7b2o29bo2bo$2o11b2o2bo5b3o$2o11b6o4bo2bo$13b4o4b2ob2o$20b4obo$20b5o$
20b2o$13b4o4bobo$2o11b6o2bo2bo$2o11b2o2bo4b2o$15b2o$34b2o$34b2o3$20bo$
20bo2b2o9b3o3bo$4b2o13bo5bo6b5o2bobo12b2o$4b2o14bobo2b2o4b2o3b2o3bo12b
2o$20bo3b2o6b2o3bo2bo$22b3o8bo3b3o2$22b3o8bo3b3o$20bo3b2o6b2o3bo2bo$4b
2o14bobo2b2o4b2o3b2o3bo12b2o$4b2o13bo5bo6b5o2bobo12b2o$20bo2b2o9b3o3bo
$20bo4$27b2o$27b2o!

David Bell found a smaller one that October:
#N smaller p46 LWSS gun
#O David Bell, 14 Oct 1996
x = 66, y = 63, rule = B3/S23
15boo5boo$11boobboo5boobboo$11boo13boo3$15b3o3b3o$14bobbo3bobbo$14bo3b
obo3bo$13booboboboboboo$13booboo3booboo$14b3o5b3o27boo$52boo3$28boo8b
3o12boo$28boo8bo3bo10boo$38bo4bo$39bo3bo$$39bo3bo$38bo4bo$38bo3bo10boo
$38b3o12boo3$15boo5boo28boo$15boo5bo29boo$22b3o$boo$boo$22bo$8boo11b3o
37bobbo$oo4booboo9booboo14b4o22bo$oo4bobbo11b3o14bo3bo18bo3bo$6bobbo
12bo19bo19b4o$7boo29bobbo$$7boo$6bobbo20boo$oo4bobbo20boobboo$oo4boob
oo23boo$8boo$$boo$boo9$22b3o5b3o$22bobbooboobbo$23b3o3b3o$24bo5bo4$19b
oo13boo$19boobboo5boobboo$23boo5boo!

... and that gun in turn was reduced shortly after that, and there quickly got to be so many gliderless guns that it wouldn't make any sense to try to number them sequentially.

Leithner also labeled David Buckingham's p345 LWSS gun "gliderless", presumably in the sense that gliders were not involved in the production of the LWSSes. Not sure if that would really count as "gliderless gun 1", though:

#N Period 345 B-heptomino-based glider gun
#O Dave Buckingham, 20 July 1996
#C Based on a stage created Sep 30, 1995
x = 157, y = 157, rule = B3/S23
39b3o27bo$39bo23b2obobobo$40bo21bo2b2obob3o$61bobo3b2o4bo$62bob2o4b2ob
o$64bob4obo2b2o$11b2o10bo39bo2bo2bo2bobo$12bo9bobo38b2o6b2obo57bo14bo$
11bo4b2o4bobo41bo2bo3bo58b3o10b3o$7b2obob3o2bo2bobob2ob2o34b4o2b4o62bo
8bo$8bobobo2b2o3b2obo4bo33bo69b3obo6bob3o$8bob3obo2b3o3bob2o36b3ob2ob
5o54bobo2bobo6bobo2bobo$9bo2b2o2bo4b2obob2o37b2o2b2o4bo53b2ob4ob2o2b2o
b4ob2o$10b2o4b4o4bo3bo44b3o56bo2bobo4bobo2bo$12b4o3bobo2b2ob2o43bo59bo
bo2bo4bo2bobo$12bo2bob2o2bo6bo43b2o59bo3b2o2b2o3bo$17bo7bob2o102bobob
2o6b2obobo$17bo7bob2o39b2o61b2obobob4obobob2o$12bo2bob2o2bo6bo39b2o64b
obobo2bobobo$12b4o3bobo2b2ob2o105bob2o4b2obo$10b2o4b4o4bo3bo9b2o92b2o
12b2o$9bo2b2o2bo4b2obob2o10b2o93bobob2o2b2obobo$8bob3obo2b3o3bob2o5b2o
36b2o6bo2bo48b3o2bo8bo2b3o$8bobobo2b2o3b2obo4bo2bobo36b2o6bo2bo47bo3b
2o10b2o3bo$7b2obob3o2bo2bobob2ob2o2bo44b2ob2ob2o46b3o2b3o4b3o2b3o$11bo
4b2o4bobo4b3o6b2o20b2o16bo2bo50bobo2bob2obo2bobo$12bo9bobob3o9b2o20b2o
16bo2bo46b3o3b2o8b2o$11b2o10bo2bo2bo46b2ob2ob2o43bo2bobo2bobob2obobo2b
o$26bobo49bo2bo46bobob2o2b8o2b2o$27bo50bo2bo47bobo$70bo60bo$69b2o60b3o
$69bobo62bo$133b2o$65b2o$65b2o$45b2o30b3o$44bobo27bo4bo$44bo29bo5bo49b
2o3b2o$43b2o35bo49b2o3b2o18b2o$74b2o11b2o65bobo$72bo3bo10b2o67bo$72bob
2o2bo24bo$72bo3bo24b3o13bo$74bobo23bo16b3o$74b3o23b2o18bo$53b2o64b2o$
53b2o7b2o3b2o$62bo3bobo83b4o$60bobo3bo84bo3bo$60b2o3b2o88bo$77bo2bo70b
o2bo$77bo2bo$42b2o31b2ob2ob2o26b2o$43bo33bo2bo28b2o$43bobo31bo2bo5b2o$
44b2o29b2ob2ob2o2bobo$77bo2bo4bo$77bo2bo3b2o10b2o$58b2o37bo$58bobo33b
3o9b2o22b2o$60bo33bo11bo23b2o21bo$60b2o45b3o36bo5bobo$109bo35bobob2o2b
obo$145bobobob2o2bo$106bo14b2o21b2obo4bobo$106b3o12b2o21bo2b2ob2o2b2o$
109bo35bo5bobo$40b2o66b2o28b2o5bo5bob3o$40b2o13b2o67b2o12b2o4bo2b2ob2o
4bo$55bo69b2o6b2o9b2obo4bob2o$56b3o65bo8b2o10bobobob2obo$58bo54b3o25b
2o2bobob2o3bo$24bo2bo113bobobo2bo3b2o$24bo2bo25bo2bo54b2obobob2o23bobo
3b3o$22b2ob2ob2o23bo2bo43bo2bo7bo2bobo26b2o6bo$24bo2bo10b2o11b2ob2ob2o
41bo2bo7b3obo13bo2bo$24bo2bo8b2o15bo2bo41b2ob2ob2o14bo8bo2bo$22b2ob2ob
2o6bo5bo10bo2bo43bo2bo10bo5bo6b2ob2ob2o$24bo2bo8bo14b2ob2ob2o41bo2bo
15b2o8bo2bo$24bo2bo13bob3o7bo2bo41b2ob2ob2o11b2o10bo2bo$5bo6b2o26bobo
2bo7bo2bo43bo2bo23b2ob2ob2o$5b3o3bobo23b2obobob2o54bo2bo25bo2bo$3b2o3b
o2bobobo113bo2bo$2bo3b2obobo2b2o25b3o54bo$2bob2obobobo10b2o8bo65b3o$b
2obo4bob2o9b2o6b2o69bo$o4b2ob2o2bo4b2o12b2o67b2o13b2o$b3obo5bo5b2o28b
2o66b2o$3bobo5bo35bo$b2o2b2ob2o2bo21b2o12b3o$2bobo4bob2o21b2o14bo$bo2b
2obobobo$bobo2b2obobo35bo$2bobo5bo36b3o45b2o$3bo21b2o23bo11bo33bo$25b
2o22b2o9b3o33bobo$59bo37b2o$59b2o10b2o3bo2bo$71bo4bo2bo$69bobo2b2ob2ob
2o29b2o$69b2o5bo2bo31bobo$46b2o28bo2bo33bo$46b2o26b2ob2ob2o31b2o$76bo
2bo$2bo2bo70bo2bo$bo88b2o3b2o$bo3bo84bo3bobo$b4o83bobo3bo$88b2o3b2o7b
2o$36b2o64b2o$36bo18b2o23b3o$37b3o16bo23bobo$39bo13b3o24bo3bo$53bo24bo
2b2obo$o67b2o10bo3bo$obo65b2o11b2o$2o18b2o3b2o49bo35b2o$20b2o3b2o49bo
5bo29bo$77bo4bo27bobo$77b3o30b2o$90b2o$90b2o$22b2o$22bo62bobo$23b3o60b
2o$25bo60bo$25bobo47bo2bo50bo$9b2o2b8o2b2obobo46bo2bo49bobo$9bo2bobob
2obobo2bobo2bo43b2ob2ob2o46bo2bo2bo10b2o$11b2o8b2o3b3o46bo2bo16b2o20b
2o9b3obobo9bo$9bobo2bob2obo2bobo50bo2bo16b2o20b2o6b3o4bobo4b2o4bo$7b3o
2b3o4b3o2b3o46b2ob2ob2o44bo2b2ob2obobo2bo2b3obob2o$6bo3b2o10b2o3bo47bo
2bo6b2o36bobo2bo4bob2o3b2o2bobobo$7b3o2bo8bo2b3o48bo2bo6b2o36b2o5b2obo
3b3o2bob3obo$10bobob2o2b2obobo93b2o10b2obob2o4bo2b2o2bo$9b2o12b2o92b2o
9bo3bo4b4o4b2o$11bob2o4b2obo105b2ob2o2bobo3b4o$11bobobo2bobobo64b2o39b
o6bo2b2obo2bo$8b2obobob4obobob2o61b2o39b2obo7bo$8bobob2o6b2obobo102b2o
bo7bo$10bo3b2o2b2o3bo59b2o43bo6bo2b2obo2bo$9bobo2bo4bo2bobo59bo43b2ob
2o2bobo3b4o$9bo2bobo4bobo2bo56b3o44bo3bo4b4o4b2o$6b2ob4ob2o2b2ob4ob2o
53bo4b2o2b2o37b2obob2o4bo2b2o2bo$6bobo2bobo6bobo2bobo54b5ob2ob3o36b2ob
o3b3o2bob3obo$9b3obo6bob3o69bo33bo4bob2o3b2o2bobobo$12bo8bo62b4o2b4o
34b2ob2obobo2bo2b3obob2o$9b3o10b3o58bo3bo2bo41bobo4b2o4bo$9bo14bo57bob
2o6b2o38bobo9bo$82bobo2bo2bo2bo39bo10b2o$81b2o2bob4obo$83bob2o4b2obo$
83bo4b2o3bobo$84b3obob2o2bo21bo$86bobobob2o23bo$87bo27b3o!
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