Difference between revisions of "Weekender"
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{{Spaceship|name=Weekender|pname=weekender|dir=Orthogonal|p=7|s=2c/7| | {{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)| | |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 = 79 | |||
|synthesisRLE = true | |||
|plaintext = true | |||
|rle = true | |||
|animated = true | |||
|viewerconfig = #C [[ GPS 7 TRACKLOOP 7 0 -2/7 THUMBSIZE 2 ]] | |||
|apgcode = xq7_7dfxg88gxfd7zw123u2222u321 | |||
|pentadecathlonid = 36P7H2V0.1 | |||
|eppsteinid = 14105 | |||
}} | |||
'''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, besides self-sustaining loops of [[2c/7 orthogonal#Rakes|weekender conduits]]. 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]], [[loafer]] in [[:Category:patterns found in 2013|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).<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> | |||
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= | |||
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}}]] | ||
|} | |} | ||
==See also== | |||
* [[Weekender distaff]] | |||
==References== | ==References== | ||
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{{LinkWeisstein|Weekender.html}} | {{LinkWeisstein|Weekender.html}} | ||
{{LinkLexicon|lex_w.htm#weekender}} | {{LinkLexicon|lex_w.htm#weekender}} | ||
{{LinkEppstein|14105|patternname=The Weekender (glider 14105)}} | |||
{{LinkCatagolue|xq7_7dfxg88gxfd7zw123u2222u321}} | |||
{{LinkPentadecathlonObject|36P7H2V0.1}} | |||
[[Category:Non-monotonic spaceships]] | [[Category:Non-monotonic spaceships]] | ||
{{Symmetry|orthogonal2}} |
Revision as of 01:34, 28 January 2019
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Pattern type | Spaceship | ||||||||||
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Number of cells | 36 | ||||||||||
Bounding box | 18 × 12 | ||||||||||
Direction | Orthogonal | ||||||||||
Period | 7 | ||||||||||
Mod | 7 | ||||||||||
Speed | 2c/7 | 2c/7 | ||||||||||
Heat | 45.1 | ||||||||||
Discovered by | David Eppstein | ||||||||||
Year of discovery | 2000 | ||||||||||
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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). At present, n weekenders pulling n-1 tagalongs constitute 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
See also
References
- ↑ Jason Summers' jslife pattern collection.
- ↑ Martin Grant (January 25, 2015). "Re: Small Spaceship Syntheses". Retrieved on January 25, 2015.
- ↑ Chris Cain (September 26, 2015). "Re: Small Spaceship Syntheses". Retrieved on October 7, 2015.
External links
- Searching for Spaceships - Eppstein's paper describing the discovery of the weekender
- Weekender at the Life Lexicon
- The Weekender (glider 14105) at David Eppstein's Glider Database
- 36P7H2V0.1 at Heinrich Koenig's Game of Life Object Catalogs
- Patterns
- Spaceships with 36 cells
- Periodic objects with minimum population 36
- Patterns with 36 cells
- Patterns found by David Eppstein
- Patterns found in 2000
- Patterns that can be constructed with between 70 and 79 gliders
- Spaceships
- Spaceships with period 7
- Orthogonal spaceships
- Spaceships with speed 2c/7
- Spaceships with unsimplified speed 2c/7
- Spaceships with heat 45
- Spaceships with mod 7
- Non-monotonic spaceships
- Patterns with bilateral orthogonal symmetry