http://conwaylife.com/w/index.php?title=Special:NewPages&feed=atom&hideredirs=1&limit=50&offset=&namespace=0&username=&tagfilter=LifeWiki - New pages [en]2019-05-25T03:08:41ZFrom LifeWikiMediaWiki 1.23.3http://conwaylife.com/wiki/Martin_GrantMartin Grant2019-04-26T18:26:43Z<p>Ian07: </p>
<hr />
<div>{{Person<br />
|name = Martin Grant<br />
|res = United States<br />
}}{{stub}}<br />
'''Martin Grant''' is a [[Conway's Game of Life|Life]] enthusiast who primarily specializes in [[glider syntheses]]. He contributes to the ConwayLife forums under the username "Extrementhusiast." He discovered syntheses for spaceships including but not limited to [[dart]], [[30P5H2V0]], [[weekender]], and most recently, [[spider]], all of which were the first spaceships of their respective [[speed]]s to be synthesized.<br />
<br />
Outside of glider syntheses, he also constructed the [[Model D Heisenburp]] and the [[quadratic sawtooth]].<br />
<br />
{{PatternsFoundBy|name=Martin Grant}}<br />
<br />
{{DEFAULTSORT:Grant, Martin}}</div>Ian07http://conwaylife.com/wiki/80P680P62019-04-26T17:58:30Z<p>Ian07: Making this to fix a redlink in Template:SparkerNavbox</p>
<hr />
<div>{{Oscillator<br />
|name = 80P6<br />
|pname = 80p6<br />
|c = 80<br />
|bx = 16<br />
|by = 21<br />
|p = 6<br />
|m = 6<br />
|h = 33.3<br />
|v = 0.60<br />
|sv = 0.56<br />
|discoverer = Karel Suhajda<br />
|discoveryear = 2004<br />
|rulemin = B3/S23<br />
|rulemax = B38/S23<br />
|rulespecial = [[Conway's Game of Life|Conway Life]]<br />
|isorulemin = B3/S23<br />
|isorulemax = B35n6c7e8/S234eqwz5cekqy6-ac7e<br />
|plaintext = true<br />
|rle = true<br />
|apgcode = xp6_0o4s0fp0o4a9jz3t0t54741cec1gggkcz6t0v064koy11qmzw1<br />
|animated = yes<br />
|viewerconfig = #C [[ GPS 3 ZOOM 12 ]]<br />
}}{{stub}}<br />
'''80P6''' is a {{period|6}} [[oscillator]] and [[domino]] [[sparker]] found by [[Karel Suhajda]] in August {{year|2004}}.<ref>{{CiteSummersPattern|name=all-osc|accessdate=April 26, 2019}}</ref><br />
<br />
==References==<br />
<references /><br />
<br />
==External links==<br />
{{LinkCatagolue|xp6_0o4s0fp0o4a9jz3t0t54741cec1gggkcz6t0v064koy11qmzw1}}<br />
<br />
[[Category:Unnamed periodic objects]]</div>Ian07http://conwaylife.com/wiki/ShinjukuShinjuku2019-04-23T18:59:32Z<p>Ian07: Article definitely could use some expansion</p>
<hr />
<div>{{Software<br />
|name = Shinjuku<br />
|url = https://gitlab.com/parclytaxel/Shinjuku<br />
|purpose = Glider synthesis database<br />
|createdby = Jeremy Tan<br />
|platform = Platform-independent<br />
}}{{stub}}<br />
'''Shinjuku'''{{refn|group=note|Named after [https://en.wikipedia.org/wiki/Shinjuku_Station Shinjuku Station], a train station in Tokyo and the busiest in the world.}} is a database of [[glider syntheses]] started by [[Jeremy Tan]] on April 10, 2019, as well as a collection of related Python scripts powered by [[lifelib]]. It uses a custom format to encode each step of an incremental synthesis, containing the starting [[apgcode]], the locations of the gliders, and the apgcode of the resulting object.<br />
<br />
==Notes==<br />
<references group="note" /><br />
<br />
==External links==<br />
* [https://gitlab.com/parclytaxel/shinjuku Shinjuku database and code repository]<br />
{{LinkForumThread|f=7|t=3949|title=Shinjuku: a database of glider syntheses}}</div>Ian07http://conwaylife.com/wiki/OCAOCA2019-03-30T19:17:18Z<p>Ian07: Glossary</p>
<hr />
<div>{{Glossary}}<br />
'''OCA''' is an acronym for "other cellular automata". This includes [[Life-like#Life-like cellular_automata|Life-like CAs]], [[Isotropic non-totalistic Life-like cellular automaton|isotropic CAs]], [[Non-isotropic Life-like cellular automaton|anisotropic non-totalistic CAs]], rules with more than two states, rules that operate on non-square grids or with neighborhoods other than the [[Moore neighbourhood]], and every other type of [[cellular automaton]] that is not [[Conway's Game of Life]].<br />
<br />
Notable non-Life rules, when they are catalogued on the LifeWiki, have article names prefixed by "OCA:" -- e.g., [[OCA:HighLife]]. When these rules support notable patterns that have their own pattern pages, these are stored as subpages of the rule page -- e.g., [[OCA:HighLife/Bomber]].<br />
<br />
==See also==<br />
*[[OCA Discovery of the Year]]</div>Dvgrnhttp://conwaylife.com/wiki/Triangular_neighbourhoodTriangular neighbourhood2019-03-30T12:49:44Z<p>Rowett: /* Software support */ notation conflict avoidance</p>
<hr />
<div>{{Glossary}}<br />
The '''triangular neighbourhood''' is the set of all [[cell]]s that are adjacent to the region of interest in a grid tiled with triangles (the region of interest itself may or may not be considered part of the triangular neighbourhood, depending on context).<br />
<br />
The triangular neigbourhood can either refer to:<br />
* The 12-cell triangular neighbourhood (sometimes referred to as the Triangular Moore neighbourhood)<br />
[[File:Triangular12.png|150px]]<br />
* The 9-cell triangular vertices neighbourhood<br />
[[File:Triangular9.png|150px]]<br />
* The 3-cell triangular edges neighbourhood (sometimes referred to as the Triangular von Neumann neighbourhood).<br />
[[File:Triangular3.png|150px]]<br />
<br />
The triangular tiling shares its symmetries with that of the hexagonal tiling.<br />
<br />
==Software support==<br />
[[LifeViewer]] natively supports the three aforementioned triangular neighbourhoods using 2 states. For triangles pointing down the following neighbourhood is used on a square tiling:<br />
<br />
[[File:Triangular neighbourhood (radius 1).png|150px]]<br />
<br />
For triangles pointing up the above neighbourhood is reflected through the y-axis.<br />
<br />
B0 emulation, [[Alternating rule]]s and [[Generations]] are also supported.<br />
<br />
Triangular rules are notated with an <tt><nowiki>L</nowiki></tt>, <tt><nowiki>LE</nowiki></tt> or <tt><nowiki>LV</nowiki></tt> suffix for Triangular, Triangular Edges and Triangular Vertices neighbourhoods respectively (e.g. <tt><nowiki>B456/S34L</nowiki></tt>). X is used for 10, Y for 11 and Z for 12. This notation avoids conflicts with [[Isotropic_non-totalistic_Life-like_cellular_automaton|Isotropic non-totalistic Moore neighbourhood]] rules.<br />
<br />
<br />
TriLife.zip is available on Golly's online pattern archive, and simulates 2-state triangular outer-totalistic moore rules using 4 states, dividing each square cell into two triangles. A is used for 10, B for 11 and C for 12.<br />
<br />
<br />
[[Tim Hutton]]'s Fredkin replicator rule generation script also divides cells into two triangles, and uses T for triangular von Neumann and TM for triangular Moore.<br />
<br />
==Symmetries==<br />
{{main|Symmetry}}<br />
The triangular neighbourhood relies on a different grid than the [[Moore]] and [[von Neumann]] neighborhoods and thus features a different set of inherent symmetries when dealing with [[isotropic]] rules:<br />
<br />
* Asymmetric (C1, 8x32, 4x64, 2x128, 1x256)<br />
* C2_1<br />
* C2_4<br />
* C3_1<br />
* C3_3<br />
* C6<br />
* D2_xo<br />
* D2_x<br />
* D4_x1<br />
* D4_x4<br />
* D6_1<br />
* D6_1o<br />
* D6_3<br />
* D12<br />
<br />
==See also==<br />
* [[Neighbourhood]]<br />
** [[Hexagonal neighbourhood]]<br />
** [[Margolus neighbourhood]]<br />
** [[Moore neighbourhood]]<br />
** [[von Neumann neighbourhood]]<br />
** [[Euclidean neighbourhood]]<br />
** [[Circular neighbourhood]]<br />
* [[Zone of influence]]<br />
<br />
==External links==<br />
{{LinkWikipedia|Triangular_tiling|name=Triangular tiling}}<br />
<br />
__NOTOC__</div>AwesoMan3000http://conwaylife.com/wiki/HF95PHF95P2019-03-27T20:50:03Z<p>Ian07: Plaintext and {{stub}}</p>
<hr />
<div>{{Conduit<br />
|name = Hf95P<br />
|pname = hf95p<br />
|type = elementary<br />
|conduitfor = Herschel<br />
|dependent = no<br />
|spartan = yes<br />
|plaintext = true<br />
|rle = true<br />
|viewerconfig = #C [[ WIDTH 480 HEIGHT 480 THUMBLAUNCH POPUPWIDTH 600 THUMBSIZE 2 ZOOM 8 GPS 30 LOOP 96 PAUSE 2 T 95 PAUSE 2 ]]<br />
}}<br />
{{stub}}<br />
'''HF95P''' is a small conduit that turns a [[Herschel]] to a [[pi heptomino]].</div>Mooseyhttp://conwaylife.com/wiki/24827M24827M2019-03-24T14:59:11Z<p>Ian07: </p>
<hr />
<div>{{Methuselah<br />
|name = 24827M<br />
|pname = 24827m<br />
|c = 13<br />
|bx = 8<br />
|by = 7<br />
|mcps = 16<br />
|l = 24827<br />
|f = 5151<br />
|discoverer = Simon Ekström<br />
|discoveryear = 2017<br />
|rle = true<br />
|plaintext = true<br />
}}<br />
'''24827M''' is a [[methuselah]] with a lifespan of 24827 [[generation]]s, discovered by [[Simon Ekström]] on March 10, {{year|2017}}.<ref name="post41471" /><br />
<br />
==Stable pattern==<br />
The stable pattern that results from 24827M has a total of 5151 [[cell]]s, giving the methuselah an unusually high [[F/I]] ratio of 396.2. Excluding 81 escaping [[glider]]s, it consists of 341 [[blinker]]s (including 29 [[traffic light]]s and one [[interchange]]), 333 [[block]]s, 196 [[beehive]]s (including eight [[honey farm]]s), 77 [[loaf|loaves]], 57 [[boat]]s, 24 [[ship]]s, 15 [[pond]]s, 11 [[tub]]s, three [[toad]]s, two [[beacon]]s, two [[half-bakeries]] in the form of a full [[bakery]], one [[long boat]], one [[mango]], and one [[paperclip]].<br />
<br />
==See also==<br />
*[[List of long-lived methuselahs]]<br />
<br />
==References==<br />
<references><br />
<ref name="post41471">{{LinkForumThread<br />
|format = ref<br />
|author = Simon Ekström<br />
|title = Re: Long-lived methuselahs<br />
|date = March 10, 2017<br />
|accessdate = March 24, 2019<br />
|p = 41471<br />
}}</ref><br />
</references></div>Ian07http://conwaylife.com/wiki/Symmetrical_synapseSymmetrical synapse2019-03-24T14:27:31Z<p>Freywa: Will cost 9 gliders in latest update</p>
<hr />
<div>{{Stilllife<br />
|name = Symmetrical synapse<br />
|pname = symmetricalsynapse<br />
|c = 38<br />
|bx = 9<br />
|by = 9<br />
|fc = 36.5<br />
|rulemin = B/S23<br />
|rulemax = B378/S012345678<br />
|rulespecial = [[Conway's Game of Life|Conway Life]]<br />
|isorulemin = B/S2-n3n<br />
|isorulemax = B2ikn34-ijr5-ekr6-i78/S012345678<br />
|synthesis = 9<br />
|plaintext = true<br />
|rle = true<br />
|apgcode = xs38_69ab8ba96z695d1d596<br />
}}<br />
'''Symmetrical synapse''' is a naturally-occurring {{slcells|38}}-cell [[still life]]. Despite its size, it occurs relatively frequently in [[soup]] searches due to a [[predecessor]] involving a [[beehive]], a [[honey farm]] predecessor, and a [[traffic light]].<br />
<br />
{{EmbedViewer<br />
|pname = symmetricalsynapsepredecessor<br />
|position = center<br />
|viewerconfig = C# [[ THUMBSIZE 2 HEIGHT 480 ]]<br />
|caption = A common symmetrical synapse predecessor.<br /><br />
}}<br />
<br />
==See also==<br />
* [[Clips]]<br />
* [[Omnibus]]<br />
<br />
==External links==<br />
{{LinkCatagolue|xs38_69ab8ba96z695d1d596}}<br />
<br />
{{Symmetry|orthogonal4}}</div>Ian07http://conwaylife.com/wiki/PulsatorPulsator2019-03-12T09:53:46Z<p>Apple Bottom: New glossary; I've not seen it in use, but it is in Poundstone's book and thus may be of historic interest if nothing else.</p>
<hr />
<div>{{Glossary}}<br />
A '''pulsator''' is an [[oscillator]] of medium to long [[period]] that grows and contracts during its cycle. [[Figure eight]] is an example of a pulsator.<br />
<br />
==References==<br />
* William Poundstone: ''The Recursive Universe: Cosmic Complexity and the Limits of Scientific Knowledge'', William Morrow &amp; Co. (1985); reprinted by Dover (2013), ISBN 978-0-486-49098-4, OCLC 809411873, p. 42.</div>Apple Bottomhttp://conwaylife.com/wiki/Garden_of_Eden_11Garden of Eden 112019-03-03T01:51:05Z<p>Ian07: </p>
<hr />
<div>{{Pattern<br />
|name = Garden of Eden 11<br />
|pname = gardenofeden11<br />
|type = Garden of Eden<br />
|c = 50<br />
|bx = 11<br />
|by = 9<br />
|discoverer = Steven Eker<br />
|discoveryear = 2017<br />
|synthesis = 0<br />
|rle = true<br />
|plaintext = true<br />
}}{{stub}}<br />
'''Garden of Eden 11''' is a [[Garden of Eden]] discovered by [[Steven Eker]] on January 25, {{year|2017}}. It requires only 88 cells to specify, making it the smallest known Garden of Eden by this metric.<br />
<br />
==Image gallery==<br />
{|<br />
|-<br />
|[[Image:Orphan11.gif|framed|left|The orphan on which Garden of Eden 11 is based requires 88 [[cell]]s to specify.]]<br />
|}<br />
<br />
==External links==<br />
* [http://wwwhomes.uni-bielefeld.de/achim/orphan_11th.html Description of this Garden of Eden] at Achim's Game of Life Page</div>Ian07http://conwaylife.com/wiki/C/7_(disambiguation)C/7 (disambiguation)2019-02-28T21:18:30Z<p>Ian07: </p>
<hr />
<div>{{disambig|name=c/7}}<br />
<br />
* [[c/7 orthogonal]]<br />
* [[c/7 diagonal]]<br />
<br />
==External links==<br />
{{LinkLexicon|lex_c.htm#c7spaceship|name=c/7 spaceship}}<br />
{{DISPLAYTITLE:c/7 (disambiguation)}}</div>Ian07http://conwaylife.com/wiki/C/5_(disambiguation)C/5 (disambiguation)2019-02-28T21:18:16Z<p>Ian07: Lexicon link</p>
<hr />
<div>{{disambig|name=c/5}}<br />
<br />
* [[c/5 orthogonal]]<br />
* [[c/5 diagonal]]<br />
<br />
==External links==<br />
{{LinkLexicon|lex_c.htm#c5spaceship|name=c/5 spaceship}}<br />
{{DISPLAYTITLE:c/5 (disambiguation)}}</div>Ian07http://conwaylife.com/wiki/Chris_Cain%E2%80%99s_camelshipChris Cain’s camelship2019-02-26T13:05:51Z<p>Dvgrn: add sample non-optimized synthesis for camelship, along the same lines as Demonoid and Gemini syntheses</p>
<hr />
<div>{{For|the general concept of camelships as slope 3 spaceships|Oblique spaceship}}<br />
{{Spaceship<br />
|name = Camelship<br />
|pname = camelship<br />
|c = 239822<br />
|bx = 976094<br />
|by = 976223<br />
|dir = Oblique<br />
|slope = 3<br />
|p = 3948264<br />
|m = 3948264<br />
|s = (3,1)c/3948264<br />
|z = (3,1)c/3948264<br />
|discoverer = Chris Cain<br />
|discoveryear = 2018<br />
|rulemin = B3/S23<br />
|rulemax = B3/S23<br />
|rulespecial = [[Conway's Game of Life|Conway Life]]<br />
|zip = true<br />
|synthesis = 26614<br />
|synthesisRLE = true<br />
}}<br />
On December 7, {{year|2018}}, [[Chris Cain]] created a [[self-constructing]] '''camelship''' [[spaceship]], the first known spaceship with the minimum possible step size of (3,1).<ref name="post66297" /> It was also considerably smaller than the [[Gemini 3]], the only other known spaceship with a (3N, N) direction of travel.<br />
<br />
==Design==<br />
The camelship's design is roughly based on a [[Volatility#V|volatility-1 oscillator]] constructed the previous month.<br />
<br />
The volatility-1 oscillator's two halves are rotationally symmetric, which allows it to re-use the same destruction and reconstruction recipes on both sides of its loop. By contrast, the camelship needs two separate [[single-channel]] [[recipe]]s. The first recipe shoots down the circuitry on the left side and rebuilds it at an offset of (-3, -1). If this recipe were reflected 180 degrees and used to shift the right-side circuitry, it would have the effect of moving it by (3, 1) instead of (-3, -1) and the loop would no longer line up correctly.<br />
<br />
Instead, the second recipe (which is inactive on the left side due to the first recipe constructing an eater on the [[construction arm]] [[lane]]) is activated on the right side by a glider that crosses the entire camelship on every cycle. This glider is produced by the leading gliders in the first recipe in the course of shifting a marker block by (-3, -1) near the north corner. The glider interrupts the copied recipe along the southeast side, exactly at the transition point between the first and second recipes.<br />
<br />
So at the east corner, the ''first'' recipe is absorbed by an eater ([[moose antlers]]) and the ''second'' recipe is activated to shift the right-side circuitry by (-3, -1).<br />
<br />
==Application to other speeds==<br />
A similar method could be adapted to shift circuitry by any chosen distance, to make spaceships with other small step sizes, including [[oblique spaceship|oblique]] directions: giraffeship, ibisship, zebraship, antelopeship, etc. The recipes involving the eaters in the east and west corners and the block near the north corner would have to be re-invented or adjusted for each new step, but much of the other circuitry could remain the same. The only exception is that for any step (X, Y) where X+Y is odd, the reflecting circuitry on the right side must be different from the circuitry on the left, because the single-channel recipes in such a spaceship will travel on alternate [[colour]]s in successive cycles.<br />
<br />
== See also ==<br />
* [[Gemini]]<br />
* [[Gemini 3]]<br />
* [[Geminoid]]<br />
* [[Demonoid]]<br />
* [[Orthogonoid]]<br />
* [[Half-baked knightship]]<br />
<br />
==References==<br />
<references><br />
<ref name="post66297">{{LinkForumThread<br />
|format = ref<br />
|title = Re: Self-Constructing Spaceship Challenges<br />
|p = 66297<br />
|author = Chris Cain<br />
|date = December 7, 2018<br />
}}</ref><br />
</references><br />
<br />
[[Category:Adjustable spaceships]]</div>Mooseyhttp://conwaylife.com/wiki/OCA_Discovery_of_the_YearOCA Discovery of the Year2019-02-20T02:21:57Z<p>Ian07: Category:Everything else</p>
<hr />
<div>{{stub}}<br />
The '''OCA Discovery of the Year'''{{refn|group=note|"OCA" is an acronym for "other cellular automata."}} competition is held each year on the ConwayLife.com forums as a counterpart to [[Pattern of the Year]] dedicated to rules other than [[Conway's Game of Life]]. Users are invited to submit interesting and noteworthy patterns, rules, families of rules, or projects relating to other cellular automata, their own or others'; following discussion, a final list is then curated, and a public vote held. All entries must have been found during the year in question.<br />
<br />
==Results==<br />
<br />
===2018===<br />
The nominations for the 2018 competition were organized by [[Rhombic]], and the voting by [[77topaz]]. Users were able to vote on as many entries as they wished, awarding up to three stars to each one.<br />
<br />
{| class="sortable wikitable"<br />
|-<br />
! data-sort-type="number" | Final rank<br />
! data-sort-type="number" | Stars<br />
! Pattern<br />
! Author<br />
|-<br />
! class="unsortable" colspan="4" | Description<br />
|-<br />
| 1 || 38 || [[Adjustable spaceship|Adjustable slope]] spaceships || [[AforAmpere]]<br />
|- class="expand-child"<br />
| colspan="4" | Spaceships which can be adjustable to travel at any integer [[slope]]. <br />
|-<br />
| 2 || 24 || bf esolang simulator || [[M.I. Wright]]<br />
|- class="expand-child"<br />
| colspan="4" | A cellular automaton simulating the bf programming language.<br />
|-<br />
| data-sort-value="3" | =3 || 23 || [[ATPP]] || [[dani]]<br />
|- class="expand-child"<br />
| colspan="4" | A rule containing many spaceships based on failed replicators as well as several actual [[replicator]]s based on it.<br />
|-<br />
| data-sort-value="3" | =3 || 23 || Exponentially long-lasting [[methuselah]]s || [[toroidalet]]<br />
|- class="expand-child"<br />
| colspan="4" | Various [[fuse]]-based methuselahs, one of which has an estimated lifespan of 2<sup>2^50</sup> generations.<br />
|-<br />
| 5 || 22 || Smallest [[Oscillator]]s Supporting Specific Periods || [[Oscar Cunningham]]<br />
|- class="expand-child"<br />
| colspan="4" | Examples of two-cell oscillators for every period up to 102.<br />
|-<br />
| 6 || 21 || 8c/9 orthogonal spaceship || [[AforAmpere]]<br />
|- class="expand-child"<br />
| colspan="4" | The fastest known sub-[[c orthogonal|lightspeed]] spaceship in an [[isotropic non-totalistic]] rule without [[B0]].<br />
|-<br />
| 7 || 20 || [[Suns]] || [[Goldtiger997]]<br />
|- class="expand-child"<br />
| colspan="4" | A rule containing a high-period oscillator which can be hassled at various other periods.<br />
|-<br />
| 8 || 18 || [[JvN29]] loop-based [[replicator]] || [[fluffykitty]], [[Redstoneboi]]<br />
|- class="expand-child"<br />
| colspan="4" | A replicator in von Neumann's original cellular automaton.<br />
|-<br />
| data-sort-value="9" | =9 || 17 || [[Omosso]] || [[Saka]]<br />
|- class="expand-child"<br />
| colspan="4" | A rule containing high-period spaceships, a natural [[RRO]], and [[OMOS]]es of various periods, hence its name.<br />
|-<br />
| data-sort-value="9" | =9 || 17 || [https://en.wikipedia.org/wiki/Rule_110 Rule 110] [[unit cell]]s in various rules || [[Peter Naszvadi]], [[Luka Okanishi]], [[LaundryPizza03]]<br />
|- class="expand-child"<br />
| colspan="4" | Proofs of Turing-completeness for rules including but not limited to [[HighLife]], [[DryLife]], and [[LowDeath]].<br />
|-<br />
| 11 || 16 || [[tlife]] [[puffer]] || [[dani]], [[Luka Okanishi]]<br />
|- class="expand-child"<br />
| colspan="4" | An 8c/282 orthogonal puffer, and a spaceship based on it.<br />
|-<br />
| data-sort-value="12" | =12 || 15 || [[Hype]] || [[FlameandFury]]<br />
|- class="expand-child"<br />
| colspan="4" | A rule with a wide variety of high-period oscillators which has also been proven [[omniperiodic]].<br />
|-<br />
| data-sort-value="12" | =12 || 15 || [[Hive]] || [[dani]]<br />
|- class="expand-child"<br />
| colspan="4" | A rule with a failed [[replicator]] from which various high-period and unusual-speed spaceships have been constructed.<br />
|-<br />
| data-sort-value="14" | =14 || 14 || Record-slowest spaceships || [[AforAmpere]]<br />
|- class="expand-child"<br />
| colspan="4" | A rule table supporting spaceships based on [https://en.wikipedia.org/wiki/Knuth%27s_up-arrow_notation Knuth's up-arrow notation], allowing for unimaginably slow speeds.<br />
|-<br />
| data-sort-value="14" | =14 || 14 || [[Emitters]] || [[dani]]<br />
|- class="expand-child"<br />
| colspan="4" | A rule with many high-period oscillators (similar to [[Hype]]) but also a small [[spacefiller]], a [[replicator]], and several [[gun]]s.<br />
|-<br />
| 16 || 13 || Other [[adjustable spaceship]]s || [[Luka Okanishi]], [[muzik]], [[Arie Paap]], [[2718281828]], [[AforAmpere]]<br />
|- class="expand-child"<br />
|-<br />
| 17 || 11 || Other [[RRO]]s || [[2718281828]]<br />
|- class="expand-child"<br />
|-<br />
| 18 || 10 || [[Arrow]] || [[77topaz]]<br />
|- class="expand-child"<br />
| colspan="4" | A rule with [[adjustable spaceship|adjustable]] [[rake]]s and many known reactions based on them.<br />
|}<br />
<br />
===2017===<br />
The 2017 competition was organized by [[Rhombic]]. Users were able to vote on as many entries as they wished, awarding up to three stars to each one.<br />
<br />
{| class="sortable wikitable"<br />
|-<br />
! data-sort-type="number" | Final rank<br />
! data-sort-type="number" | Stars<br />
! Pattern<br />
! Author<br />
|-<br />
! class="unsortable" colspan="4" | Description<br />
|-<br />
| 1 || 25 || Orthogonal [[adjustable spaceships]] || [[Aidan F. Pierce]], [[Luka Okanishi]]<br />
|- class="expand-child"<br />
| colspan="4" | Two rules allowing for the trivial construction of infinitely many odd and even-period spaceships respectively.<br />
|-<br />
| 2 || 18 || [[LifeWiki:5s project|5s project]] || [[dani]], et al.<br />
|- class="expand-child"<br />
| colspan="4" | A collection of the smallest known spaceships of every speed among the [[isotropic non-totalistic]] rulespace.<br />
|-<br />
| data-sort-value="3" | =3 || 15 || [[SMOS|SMOSMOS]] || [[Saka]], et al.<br />
|- class="expand-child"<br />
| colspan="4" | The first known spaceships made of SMOSes, with various examples posted.<br />
|-<br />
| data-sort-value="3" | =3 || 15 || [[Movostill 3]] || [[dani]]<br />
|- class="expand-child"<br />
| colspan="4" | A rule with various elementary spaceships and guns as well as construction potential.<br />
|-<br />
| data-sort-value="3" | =3 || 15 || [[HighLife]] replicator spaceships || [[Luka Okanishi]]<br />
|- class="expand-child"<br />
| colspan="4" | [[Replicator]]-based spaceships traveling at speeds of c/18, c/12, and c/30 diagonal respectively.<br />
|-<br />
| data-sort-value="6" | =6 || 14 || [[tDryLife]] pondlayer-based spaceship || [[Luka Okanishi]]<br />
|- class="expand-child"<br />
| colspan="4" | An engineered spaceship based on a high-period [[pond]] [[puffer]].<br />
|-<br />
| data-sort-value="6" | =6 || 14 || One-cell [[universal constructor]] || [[blah]]<br />
|- class="expand-child"<br />
| colspan="4" | A method of producing arbitrary complex patterns from a single cell using rule tables.<br />
|-<br />
| 8 || 12 || [[Snowflakes]] || [[Blinkerspawn]], [[dani]]<br />
|- class="expand-child"<br />
| colspan="4" | A rule with construction potential despite its differences from Conway's Game of Life.<br />
|-<br />
| 9 || 11 || [https://en.wikipedia.org/wiki/Rule_110 Rule 110] [[unit cell]]s in various rules || [[Peter Naszvadi]]<br />
|- class="expand-child"<br />
| colspan="4" | Proofs of Turing-completeness for certain [[Life-like]] rules including but not limited to [[Pedestrian Life]], [[EightLife]], and [[HoneyLife]].<br />
|-<br />
| data-sort-value="10" | =10 || 9 || Spaceship-bouncing-off-object [[adjustable spaceships]] || [[muzik]]<br />
|-<br />
| data-sort-value="10" | =10 || 9 || Extremely slow spaceships || [[Blinkerspawn]], et al.<br />
|- class="expand-child"<br />
| colspan="4" | The design of spaceships with excruciatingly slow speeds using different approaches<br />
|-<br />
| 12 || 7 || [[Slope]] 73 spaceship || [[AforAmpere]]<br />
|- class="expand-child"<br />
| colspan="4" | A (73,1)c/160 spaceship, at the time the [[oblique spaceship]] with the steepest known slope.<br />
|-<br />
| 13 || 6 || [[Larger than Life]] developments || [[Saka]], [[muzik]], et al.<br />
|- class="expand-child"<br />
| colspan="4" | A collective entry for various discoveries within the Larger than Life rulespace.<br />
|}<br />
<br />
==Notes==<br />
<references group="note" /><br />
<br />
==External links==<br />
<br />
===2018===<br />
{{LinkForumThread|f=11|t=3650|title=OCA Discovery of the Year 2018 competition}} (entries)<br />
{{LinkForumThread|f=11|t=3796|title=OCA Discovery of the Year 2018 competition: Voting}}<br />
{{LinkForumThread|p=71074|title=Re: OCA Discovery of the Year 2018 competition: Voting}} (results)<br />
<br />
===2017===<br />
{{LinkForumThread|f=11|t=3208|title=OCA Discovery of the Year 2017}} (entries)<br />
{{LinkForumThread|f=11|t=3246|title=OCA Discovery of the Year 2017 - Votes}}<br />
{{LinkForumThread|p=56599|title=Re: OCA Discovery of the Year 2017 - Results}} (results)<br />
<br />
[[Category:Everything else]]</div>Ian07http://conwaylife.com/wiki/IsomerIsomer2019-02-19T21:26:19Z<p>Ian07: </p>
<hr />
<div>{{stub}}{{Glossary}}<br />
An '''isomer''' is any of two or more objects each consisting of the same individual parts with different relative arrangements. These objects are distinguished using various affixes described below.<br />
<br />
==''Cis-'' and ''trans-''==<br />
The ''cis-'' prefix refers to the isomer in which the denser parts of each component are more "bunched together," while the ''trans-'' prefix refers to the isomer which is more "spread apart."<br />
<br />
{{EmbedViewer<br />
|pname = beaconontableisomers<br />
|position = center<br />
|caption = [[Cis-beacon on table]] (left) and [[trans-beacon on table]] (right)<br />
|viewerconfig = #C [[ AUTOSTART GPS 2 WIDTH 640 HEIGHT 640 ]]<br />
}}<br />
<br />
<br />
==''Ortho-'' and ''para-''==<br />
Ortho and para refer to the orientation of the object inducting the other object.<br />
{{EmbedViewer<br />
|pname = cisorthoparatrans<br />
|position = center<br />
|caption = [[Cis-carrier on table]], [[Ortho-carrier on table]], [[Para-carrier on table]], and [[Trans-carrier on table]], in order.<br />
|viewerconfig = #C [[ AUTOSTART GPS 2 WIDTH 640 HEIGHT 640 ]]<br />
}}<br />
<br />
=="Up" and "down"==<br />
Isomers can be further distinguished with the ''up'' and ''down'' interfixes. ''Up'' refers to isomers in which one object "points" to the denser part of the other, while ''down'' means it points to the less dense part.<br />
<br />
{{EmbedViewer<br />
|pname = beacononlonghookisomers<br />
|position = center<br />
|caption = The four isomers of [[beacon on long hook]].<br>Top: [[Cis-beacon down on long hook|Cis-beacon down]] and [[Trans-beacon down on long hook|Trans-beacon down]]<br>Bottom: [[Cis-beacon up on long hook|Cis-beacon up]] and [[Trans-beacon up on long hook|Trans-beacon up]]<br><br />
|viewerconfig = #C [[ AUTOSTART GPS 2 WIDTH 640 HEIGHT 640 ]]<br />
}}<br />
<br />
==See also==<br />
*[[Pattern naming]]<br />
*[[Bridge]]<br />
*[[Siamese]]<br />
*[[Tie]]<br />
*[[Weld]]</div>Ian07