Cloverleaf interchange: Difference between revisions
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|apgcode = xs56_g8861u0u1688gz8ll55o0o55ll8zx3430343 | |apgcode = xs56_g8861u0u1688gz8ll55o0o55ll8zx3430343 | ||
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{{for|other uses of cloverleaf|Cloverleaf (disambiguation)}} | |||
'''Cloverleaf interchange''' (or '''fourfold [[racetrack]]-[[weld]]-racetrack''') is a {{slcells|56}} | '''Cloverleaf interchange''' (or '''fourfold [[racetrack]]-[[weld]]-racetrack''') is a {{slcells|56|text=56-cell}} [[still life]] exhibiting D8_1 [[symmetry]]. | ||
While known for many years beforehand due to its ability to be | While known for many years beforehand due to its ability to be [[hassle]]d, it is notable due to a natural occurrence being found in the [[ash]] of a random [[asymmetric]] [[soup]] by [[Adam P. Goucher]] on August 12, {{year|2016}}.<ref name="haul10a1c7a48df686717596631e275383a5" /><ref name="post34242" /> This made it the single largest known still life to occur completely [[natural]]ly, surpassing the previous record holder, the 46-cell [[professor]]; it had previously arisen semi-naturally in various higher symmetries, including C2_1, C4_1, D2_+1, D4_+1, D4_+2 and D4_x1. It has since been tied in C1 by another, unnamed 56-cell still life found by [[John Goodman]] in September {{year|2021}}.<ref name="post135613" /> | ||
[[BlinkerSpawn]] found a 12 | [[BlinkerSpawn]] found a {{gliders|12}} [[Glider synthesis|synthesis]] on August 12, 2016.<ref name="post34243" /> [[GUYTU6J]] improved this to {{gliders|10|text=10 gliders}} on February 5, {{year|2020}}.<ref name="post88936" /> | ||
A cloverleaf interchange can be hassled by [[ | A cloverleaf interchange can be hassled by [[carnival shuttle]]s: | ||
{{EmbedViewer | {{EmbedViewer | ||
|pname = p12cloverleafhassler | |pname = p12cloverleafhassler | ||
|viewerconfig = #C [[ AUTOSTART THUMBSIZE 2 ZOOM 8 WIDTH 600 HEIGHT 600 GPS 6 LOOP 12 ]] | |viewerconfig = #C [[ AUTOSTART THUMBSIZE 2 ZOOM 8 WIDTH 600 HEIGHT 600 GPS 6 LOOP 12 ]] | ||
|position = center | |||
}} | }} | ||
==References== | ==References== | ||
<references> | <references> | ||
<ref name=" | <ref name="haul10a1c7a48df686717596631e275383a5">{{cite web | ||
|url = https://catagolue.hatsya.com/haul/b3s23/C1/10a1c7a48df686717596631e275383a5 | |url = https://catagolue.hatsya.com/haul/b3s23/C1/10a1c7a48df686717596631e275383a5 | ||
|title = Haul | |title = Haul | ||
| Line 59: | Line 59: | ||
|date = September 8, 2021 | |date = September 8, 2021 | ||
}}</ref> | }}</ref> | ||
<ref name=" | <ref name="post34243">{{LinkForumThread | ||
| | |format = ref | ||
|title = Re: Soup search results | |||
|f = 2 |t = 1452 |p = 34243 | |||
|author = BlinkerSpawn | |author = BlinkerSpawn | ||
|date = August 12, 2016 | |date = August 12, 2016 | ||
}}</ref> | }}</ref> | ||
<ref name="post88936">{{LinkForumThread | <ref name="post88936">{{LinkForumThread | ||
| Line 77: | Line 76: | ||
==External links== | ==External links== | ||
{{LinkWikipedia|Cloverleaf_interchange}} | * {{LinkWikipedia|Cloverleaf_interchange}} | ||
{{LinkCatagolue|xs56_g8861u0u1688gz8ll55o0o55ll8zx3430343}} | * {{LinkCatagolue|xs56_g8861u0u1688gz8ll55o0o55ll8zx3430343}} | ||
{{Symmetry|full}} | {{Symmetry|full}} | ||
{{natural}} | {{natural}} | ||
Revision as of 11:25, 8 October 2022
| Cloverleaf interchange | |||||||||
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| Pattern type | Strict still life | ||||||||
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| Number of cells | 56 | ||||||||
| Bounding box | 13 × 13 | ||||||||
| Static symmetry | Unspecified | ||||||||
| Discovered by | Adam P. Goucher | ||||||||
| Year of discovery | 2016 | ||||||||
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- For other uses of cloverleaf, see Cloverleaf (disambiguation).
Cloverleaf interchange (or fourfold racetrack-weld-racetrack) is a 56-cell still life exhibiting D8_1 symmetry.
While known for many years beforehand due to its ability to be hassled, it is notable due to a natural occurrence being found in the ash of a random asymmetric soup by Adam P. Goucher on August 12, 2016.[1][2] This made it the single largest known still life to occur completely naturally, surpassing the previous record holder, the 46-cell professor; it had previously arisen semi-naturally in various higher symmetries, including C2_1, C4_1, D2_+1, D4_+1, D4_+2 and D4_x1. It has since been tied in C1 by another, unnamed 56-cell still life found by John Goodman in September 2021.[3]
BlinkerSpawn found a 12-glider synthesis on August 12, 2016.[4] GUYTU6J improved this to 10 gliders on February 5, 2020.[5]
A cloverleaf interchange can be hassled by carnival shuttles:
| (click above to open LifeViewer) RLE: here Plaintext: here |
References
- ↑ Adam P. Goucher (August 12, 2016). "Haul". Catagolue. Retrieved on August 12, 2016.
- ↑ Apple Bottom (August 12, 2016). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ dani (September 8, 2021). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ BlinkerSpawn (August 12, 2016). Re: Soup search results (discussion thread) at the ConwayLife.com forums
- ↑ GUYTU6J (February 5, 2020). Re: Thread for your unsure discoveries (discussion thread) at the ConwayLife.com forums
External links
- Cloverleaf interchange at Wikipedia
- Cloverleaf interchange at Adam P. Goucher's Catagolue