Loading dock: Difference between revisions

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CiteHickersonOscillators
the contents about six Ls moves here
Line 19: Line 19:
|isorulemax      = B2-ae34cnqrtyz5-ekry6-ik78/S01c234-k5678
|isorulemax      = B2-ae34cnqrtyz5-ekry6-ik78/S01c234-k5678
|synthesis        = 14
|synthesis        = 14
|synthesis2      = 13
|synthesisRLE    = true
|synthesisRLE    = true
|plaintext        = true
|plaintext        = true
Line 24: Line 25:
|animated        = true
|animated        = true
|apgcode          = xp3_ggc2d2sgz034b43
|apgcode          = xp3_ggc2d2sgz034b43
|apgcode2        = xp3_ok4r2arz622611
|pentadecathlonid = 22P3.92
|pentadecathlonid = 22P3.92
|viewerconfig    = #C [[ GPS 2 ZOOM 24 LOOP 3 ]]
|viewerconfig    = #C [[ GPS 2 ZOOM 24 LOOP 3 ]]
}}
}}
'''Loading dock''' is a {{period|3}} [[oscillator]] that was found by [[David Buckingham]] in September {{year|1972}}.<ref>{{CiteHickersonOscillators|accessdate=March 14, 2020}}</ref> It has the same [[rotor]] as [[six Ls]].
'''Loading dock''' is a {{period|3}} [[oscillator]] that was found by [[David Buckingham]] in September {{year|1972}}.<ref>{{CiteHickersonOscillators|accessdate=March 14, 2020}}</ref>
 
It has a [[stator]] variant with larger population but smaller bounding box, named '''six Ls''' due to consisting of six L-[[tetromino]]es ([[tail]]s), as shown below.
 
{{EmbedViewer
|pname = sixls
|position = center
|viewerconfig = #C [[ GPS 2 ZOOM 24 LOOP 3 AUTOSTART ]]
|caption = six Ls
|apgcode = xp3_ca2r4kmz3116221
}}


==Synthesis==
==Synthesis==
A 14-[[glider synthesis]] was found by [[Jeremy Tan]] on March 29, {{year|2019}} based on a [[soup]] submitted to [[Catagolue]].<ref name="post74101" />
A {{gliders|14}} [[synthesis]] for loading dock and a 20-glider synthesis for six Ls were found by [[Jeremy Tan]] on March 29, {{year|2019}} based on [[soup]]s submitted to [[Catagolue]].<ref name="post74101" /> The latter was improved to {{gliders|18|brief}} gliders by [[Mark Niemiec]] two days later.<ref name="post74258" />
 
In December {{year|2020}}, [[GUYTU6J]] found a {{gliders|13}} synthesis of a {{LinkCatagolue|xp3_ok4r2arz622611|patternname=stator variant|style=raw}} of this oscillator<ref name="post117043" /> based on a suggestion from [[gmc_nxtman]] dating to November {{year|2015}}.<ref name="post25165" />


==References==
==References==
Line 40: Line 54:
|author = Jeremy Tan
|author = Jeremy Tan
|date  = March 29, 2019
|date  = March 29, 2019
}}</ref>
<ref name="post74258">{{LinkForumThread
|format = ref
|title  = Re: Synthesising Oscillators
|p      = 74258
|author = Mark Niemiec
|date  = March 31, 2019
}}</ref>
<ref name="post117043">{{LinkForumThread
|format = ref
|title  = Re: Synthesising Oscillators
|p      = 117043
|author = GUYTU6J
|date  = December 27, 2020
}}</ref>
<ref name="post25165">{{LinkForumThread
|format = ref
|title  = Re: Soup search results
|p      = 25165
|author = gmc_nxtman
|date  = November 17, 2015
}}</ref>
}}</ref>
</references>
</references>
Line 47: Line 82:
{{LinkCatagolue|xp3_ggc2d2sgz034b43}}
{{LinkCatagolue|xp3_ggc2d2sgz034b43}}
{{LinkPentadecathlonObject|22P3.92}}
{{LinkPentadecathlonObject|22P3.92}}
{{LinkLexicon|lex_s.htm#sixls|patternname=Six Ls}}
{{LinkCatagolue|xp3_ca2r4kmz3116221|patternname=Six Ls}}
{{LinkPentadecathlonObject|24P3.122}}


{{Symmetry|180degree}}
{{Symmetry|180degree}}
{{seminatural}}
{{seminatural}}

Revision as of 05:59, 12 June 2022

Loading dock
x = 9, y = 8, rule = B3/S23 4bo$2b3o$bo3b2o$ob2o3bo$bo3b2obo$2b2o3bo$4b3o$4bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 2 ZOOM 24 LOOP 3 ]]
View animated image
View static image
Pattern type Oscillator
Oscillator type Billiard table
Number of cells 22
Bounding box 9 × 8
Period 3 (mod: 3)
Heat 2.7
Volatility 0.17 | 0.17
Kinetic symmetry Unspecified
Rotor type Six Ls
Discovered by David Buckingham
Year of discovery 1972

Loading dock is a period-3 oscillator that was found by David Buckingham in September 1972.[1]

It has a stator variant with larger population but smaller bounding box, named six Ls due to consisting of six L-tetrominoes (tails), as shown below.

x = 7, y = 8, rule = B3/S23 3bo$b3o2bo$o3b3o$3o$4b3o$3o3bo$o2b3o$3bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ GPS 2 ZOOM 24 LOOP 3 AUTOSTART ]]
six Ls
(click above to open LifeViewer)
RLE: here Plaintext: here
Catagolue: here

Synthesis

A 14-glider synthesis for loading dock and a 20-glider synthesis for six Ls were found by Jeremy Tan on March 29, 2019 based on soups submitted to Catagolue.[2] The latter was improved to 18 gliders by Mark Niemiec two days later.[3]

In December 2020, GUYTU6J found a 13-glider synthesis of a stator variant of this oscillator[4] based on a suggestion from gmc_nxtman dating to November 2015.[5]

References

  1. ↑ Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
  2. ↑ Jeremy Tan (March 29, 2019). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  3. ↑ Mark Niemiec (March 31, 2019). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  4. ↑ GUYTU6J (December 27, 2020). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  5. ↑ gmc_nxtman (November 17, 2015). Re: Soup search results (discussion thread) at the ConwayLife.com forums
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