Difference between revisions of "Weekender"

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{{Spaceship|name=Weekender|pname=weekender|dir=Orthogonal|p=7|s=2c/7|bx=18|by=12|c=36|h=45.1|discoverer=David Eppstein|discoveryear=2000|life105=true|life106=true|plaintext=true|rle=true|animated=true}}
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{{Spaceship
'''Weekender''' is a [[2c/7 orthogonal]] [[spaceship]] that was found by [[:Category:Patterns found by David Eppstein|David Eppstein]] on January 12, [[:Category:Patterns found in 2000|2000]].<ref>{{CiteSummersPattern|name=jslife}}</ref> On April 27, 2000, [[:Category:Patterns found by Stephen Silver|Stephen Silver]] found a [[tagalong]] for a pair of weekenders (shown below). At present, n weekenders pulling n-1 tagalongs constitute the only known spaceships with [[speed]] 2c/7. These were the only known [[:Category:Spaceships_with_period_7|period-7]] spaceships until the discovery of [[lobster (spaceship)|lobster]] in [[:Category:patterns found in 2011|2011]].
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|name             = Weekender
 +
|pname           = weekender
 +
|c                = 36
 +
|bx              = 18
 +
|by              = 12
 +
|dir             = Orthogonal
 +
|p               = 7
 +
|m                = 7
 +
|s               = 2c/7
 +
|z                = 2c/7
 +
|h               = 45.1
 +
|discoverer       = David Eppstein
 +
|discoveryear     = 2000
 +
|rulemin          = B3/S23
 +
|rulemax          = B37/S23
 +
|rulespecial      = [[Conway's Game of Life|Conway Life]]
 +
|isorulemin      = B3-ky/S23-c
 +
|isorulemax      = B2n34cqz5ckny6-ik7/S234cekwyz5-aijq6ein7e
 +
|synthesis        = 59
 +
|synthesisRLE    = true
 +
|plaintext       = true
 +
|rle             = true
 +
|animated         = true
 +
|viewerconfig    = #C [[ GPS 7 TRACKLOOP 7 0 -2/7 THUMBSIZE 2 ]]
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|apgcode          = xq7_7dfxg88gxfd7zw123u2222u321
 +
|pentadecathlonid = 36P7H2V0.1
 +
|eppsteinid      = 14105
 +
}}
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'''Weekender''' is a [[2c/7 orthogonal]] [[spaceship]] that was found by [[David Eppstein]] on January 12, {{year|2000}}.<ref>{{CiteSummersPattern|name=jslife}}</ref> On April 27, 2000, [[Stephen Silver]] found a [[tagalong]] for a pair of weekenders (shown below). Before the discovery of [[scholar]] in {{year|2019}}, n weekenders pulling n-1 tagalongs constituted the only known spaceships with [[speed]] 2c/7, besides self-sustaining loops of [[2c/7 orthogonal#Rakes|weekender conduits]]. These were the only known {{periodS|7}} spaceships until the discovery of [[lobster (spaceship)|lobster]] in {{year|2011}}, [[loafer]] in {{year|2013}} and [[spaghetti monster]] in {{year|2016}}.
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Despite the relative simplicity of its components, a glider synthesis for the weekender had been elusive since its discovery. A weekender synthesis was completed on January 25, 2015, 15 years after its discovery (and coincidentally, on a weekend).<ref>{{cite web|url=http://www.conwaylife.com/forums/viewtopic.php?f=2&t=1557&start=25#p16223|title=Re: Small Spaceship Syntheses|author=Martin Grant|date=January 25, 2015|accessdate=January 25, 2015}}</ref>
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On September 26, 2015 [[Chris Cain]] announced a p444 weekender gun based on a 79-glider synthesis, as well as a p451/p457+ glider-to-weekender converter.<ref>{{cite web|url=http://conwaylife.com/forums/viewtopic.php?p=23009#p23009|title=
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Re: Small Spaceship Syntheses|author=Chris Cain|date=September 26, 2015|accessdate=October 7, 2015}}</ref>
  
 
==Image gallery==
 
==Image gallery==
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|[[Image:weekender_tagalong.png|framed|left|Two weekenders followed by a tagalong<br />{{JavaRLE|weekendertagalong|brief}}]]
 
|[[Image:weekender_tagalong.png|framed|left|Two weekenders followed by a tagalong<br />{{JavaRLE|weekendertagalong|brief}}]]
 
|}
 
|}
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==See also==
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* [[Weekender distaff]]
  
 
==References==
 
==References==
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{{LinkWeisstein|Weekender.html}}
 
{{LinkWeisstein|Weekender.html}}
 
{{LinkLexicon|lex_w.htm#weekender}}
 
{{LinkLexicon|lex_w.htm#weekender}}
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{{LinkEppstein|14105|patternname=The Weekender (glider 14105)}}
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{{LinkCatagolue|xq7_7dfxg88gxfd7zw123u2222u321}}
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{{LinkPentadecathlonObject|36P7H2V0.1}}
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[[Category:Non-monotonic spaceships]]
 
[[Category:Non-monotonic spaceships]]
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{{Symmetry|orthogonal2}}

Latest revision as of 22:08, 18 March 2020

Weekender
#N Weekender #O David Eppstein #C An orthogonal period 7 spaceship with speed 2c/7. #C www.conwaylife.com/wiki/Weekender x = 16, y = 11, rule = B3/S23 bo12bo$bo12bo$obo10bobo$bo12bo$bo12bo$2bo3b4o3bo$6b4o$2b4o4b4o2$4bo6bo $5b2o2b2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 7 TRACKLOOP 7 0 -2/7 THUMBSIZE 2 ]]
Pattern type Spaceship
Number of cells 36
Bounding box 18×12
Direction Orthogonal
Period 7
Mod 7
Speed 2c/7
Speed (unsimplified) 2c/7
Heat 45.1
Discovered by David Eppstein
Year of discovery 2000

Weekender is a 2c/7 orthogonal spaceship that was found by David Eppstein on January 12, 2000.[1] On April 27, 2000, Stephen Silver found a tagalong for a pair of weekenders (shown below). Before the discovery of scholar in 2019, n weekenders pulling n-1 tagalongs constituted the only known spaceships with speed 2c/7, besides self-sustaining loops of weekender conduits. These were the only known period-7 spaceships until the discovery of lobster in 2011, loafer in 2013 and spaghetti monster in 2016.

Despite the relative simplicity of its components, a glider synthesis for the weekender had been elusive since its discovery. A weekender synthesis was completed on January 25, 2015, 15 years after its discovery (and coincidentally, on a weekend).[2]

On September 26, 2015 Chris Cain announced a p444 weekender gun based on a 79-glider synthesis, as well as a p451/p457+ glider-to-weekender converter.[3]

Image gallery

Two weekenders followed by a tagalong
RLE: here

See also

References

  1. Jason Summers' jslife pattern collection.
  2. Martin Grant (January 25, 2015). "Re: Small Spaceship Syntheses". Retrieved on January 25, 2015.
  3. Chris Cain (September 26, 2015). "Re: Small Spaceship Syntheses". Retrieved on October 7, 2015.

External links


  • 36P7H2V0.1 at Heinrich Koenig's Game of Life Object Catalogs