P26 dependent reflector loop: Difference between revisions

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{{Oscillator|type=|p=26|h=102.77|v=0.87|bx=53|by=53|name=P26 glider shuttle|pname=p26glidershuttle|c=148|discoverer=Matthias Merzenich|discoveryear=2013|life105=|life106=|plaintext=|rle=true|animated=|synthesis=|synthesisRLE=|rulemin=B3/S23|rulemax=B38/S238|rulespecial=[[Conway's Game of Life|Conway Life]]}}
: ''For the other p26 dependent reflector loop, see [[Dependent reflector#p26]].''
'''P26 glider shuttle''' is a [[:Category:Oscillators_with_period_26|period-26]] [[oscillator]], based on a dependent period-26 [[reflector]], discovered by [[:Category:Patterns found by Matthias Merzenich|Matthias Merzenich]]<ref>{{cite web|url=http://conwaylife.com/forums/viewtopic.php?p=7842#p7842|title=Re: Just the place for a Snark!|author=Matthias Merzenich|date=April 27, 2013|accessdate=August 12, 2014}}</ref>. As of August 2014, it is the smallest period-26 oscillator in terms of [[population]], while [[pre-pulsar shuttle 26]] still keeps the record of the smallest period-26 oscillator in terms of the [[bounding box]].
{{Oscillator
|name        = p26 dependent reflector loop
|pname        = p26dependentreflectorloop
|f1          = Relay
|c            = 148
|bx           = 53
|by           = 53
|p            = 26
|m            = 26
|h            = 102.8
|v            = 0.87
|sv          = 0.87
|symmetry    = rc
|discoverer  = Matthias Merzenich
|discoveryear = 2012
|rulemin     = B3/S23
|rulemax     = B38/S238
|rulespecial = [[Conway's Game of Life|Conway Life]]
|isorulemin  = B3/S23
|isorulemax  = B34cz8/S234c5er8
|synthesis    = 82
|plaintext    = true
|rle          = true
|apgcode      = xp26_ymc4go4q9jzypgg01zycgy71687xo8gzggwgy465110ggy78gox32z124bq1xciaa4y0211y71zw32ywgg8gy0oi6zyfocgy64cay012221x4a61aczya2egoy0gy9c453zyh78b4zyf8ko0o80gzyf6421w11
|viewerconfig = #C [[ GPS 6 ZOOM 8 HEIGHT 440 ]]
}}
'''p26 dependent reflector loop''' is a {{period|26}} [[oscillator]] based on a [[Dependent reflector|dependent]] period-26 [[reflector]], discovered by [[Matthias Merzenich]] on February 19, {{year|2012}}.<ref name="post7842" /> It was the smallest known period-26 oscillator in terms of minimum [[population]] until the discovery of [[87P26]] on August 7, {{year|2015}}.
 
This oscillator was originally added to the LifeWiki under the name "p26 glider shuttle", but the term [[shuttle]] cannot be correctly used for a dependent reflector loop.<ref name="post175619" />
 
[[Jeremy Tan]] found an {{gliders|84}} [[synthesis]] for this oscillator on June 7, {{year|2019}}.<ref name="post77277" /> [[KtT]] lowered the cost to {{gliders|82|text=82 gliders}} on August 10, {{year|2026}}.<ref name="post232848"/>


== References ==
== References ==
<references/>
<references>
<ref name="post7842">{{LinkForumThread
|format = ref
|title  = Re: Just the place for a Snark!
|p      = 7842
|author = Matthias Merzenich
|date  = April 27, 2013
}}</ref>
<ref name="post77277">{{LinkForumThread
|format = ref
|title  = Re: Synthesising Oscillators
|p      = 77277
|author = Jeremy Tan
|date  = June 7, 2019
}}</ref>
<ref name="post175619">{{LinkForumThread
|format = ref
|title  = Re: Suggested LifeWiki edits -- definition of 'shuttle'
|p      = 175619
|author = Dave Greene
|date  = January 13, 2024
}}</ref>
<ref name="post232848">{{LinkForumThread
|format = ref
|title  = Re: Synthesising Oscillators
|p      = 232848
|author = KtT
|date  = August 10, 2026
}}</ref>
</references>
 
== See also ==
* [[p31 dependent reflector loop]], based on another reflector that requires a glider every cycle
 
== External links ==
{{LinkCatagolue|xp26_ymc4go4q9jzypgg01zycgy71687xo8gzggwgy465110ggy78gox32z124bq1xciaa4y0211y71zw32ywgg8gy0oi6zyfocgy64cay012221x4a61aczya2egoy0gy9c453zyh78b4zyf8ko0o80gzyf6421w11|patternname=p26 dependent reflector loop}}
 
{{Sparker|p=26|strength=strong}}
{{DISPLAYTITLE:p26 dependent reflector loop}}

Latest revision as of 02:06, 25 September 2026

For the other p26 dependent reflector loop, see Dependent reflector#p26.
p26 dependent reflector loop
x = 53, y = 53, rule = B3/S23 19b2o$19bobo$22bo2b2o$20b2obo2bo$19bobob2o$20bo4$22b2o$21bo2bo$21bobo$ 21bobo$16b2o4bo$15bobo18bo$15bo20b3o$14b2o23bo$38b2o$19bobo$19b2o12b2o 13bo2b2o$20bo11b2o13bobo2bo$34bo5b3o5b2obo$39bo3bo6bo$40b2obo4b2o$42bo 5bo$50bo$2b2o45b2o$2bo$4bo5bo$3b2o4bob2o$2bo6bo3bo$bob2o5b3o5bo$o2bobo 13b2o11bo$2o2bo13b2o12b2o$31bobo$13b2o$13bo23b2o$14b3o20bo$16bo18bobo$ 30bo4b2o$29bobo$29bobo$28bo2bo$29b2o4$32bo$28b2obobo$26bo2bob2o$26b2o 2bo$31bobo$32b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 6 ZOOM 8 HEIGHT 440 ]]
View static image
Pattern type Oscillator
Oscillator type Relay
Number of cells 148
Bounding box 53 × 53
Period 26 (mod: 26)
Heat 102.8
Volatility 0.87 | 0.87
Kinetic symmetry rc
Discovered by Matthias Merzenich
Year of discovery 2012

p26 dependent reflector loop is a period-26 oscillator based on a dependent period-26 reflector, discovered by Matthias Merzenich on February 19, 2012.[1] It was the smallest known period-26 oscillator in terms of minimum population until the discovery of 87P26 on August 7, 2015.

This oscillator was originally added to the LifeWiki under the name "p26 glider shuttle", but the term shuttle cannot be correctly used for a dependent reflector loop.[2]

Jeremy Tan found an 84-glider synthesis for this oscillator on June 7, 2019.[3] KtT lowered the cost to 82 gliders on August 10, 2026.[4]

References

  1. ↑ Matthias Merzenich (April 27, 2013). Re: Just the place for a Snark! (discussion thread) at the ConwayLife.com forums
  2. ↑ Dave Greene (January 13, 2024). Re: Suggested LifeWiki edits -- definition of 'shuttle' (discussion thread) at the ConwayLife.com forums
  3. ↑ Jeremy Tan (June 7, 2019). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  4. ↑ KtT (August 10, 2026). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums

See also


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