Difference between revisions of "P43 Snark loop"
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{{Oscillator | {{Oscillator | ||
|name = | |name = p43 Snark loop | ||
|pname = p43gliderloop | |pname = p43gliderloop | ||
|c = 228 | |c = 228 | ||
Line 13: | Line 13: | ||
|rulemin = B3/S23 | |rulemin = B3/S23 | ||
|rulemax = B38/S238 | |rulemax = B38/S238 | ||
|rulespecial = [[Conway's Game of Life|Conway Life]] | |||
|isorulemin = B3/S23 | |||
|isorulemax = B34c8/S234c5e6n8 | |||
|synthesis = 224 | |||
|rle = true | |rle = true | ||
|viewerconfig = #C [[ THUMBSIZE 2 GPS | |viewerconfig = #C [[ THUMBSIZE 2 GPS 10 LOOP 43 ZOOM 8 HEIGHT 600 WIDTH 600 POPUPHEIGHT 600 POPUPWIDTH 600 ]] | ||
|apgcode = xp43_ylo8bp6o8g0s4gozyfggy31230343zyg346y133zym217wggx2c6ycgzyr1226yd6511zwg4cy7a64yo8acxooxg89fgkczw1plll2y7c871yfgs26y78llljgz651ui21x33x6a2yo4cay7641zy5ggkcydc88gzy51ycc68x11wsg8zyvooy1c4ozyqo4o0o8gy311zyn31470123cjq23 | |apgcode = xp43_ylo8bp6o8g0s4gozyfggy31230343zyg346y133zym217wggx2c6ycgzyr1226yd6511zwg4cy7a64yo8acxooxg89fgkczw1plll2y7c871yfgs26y78llljgz651ui21x33x6a2yo4cay7641zy5ggkcydc88gzy51ycc68x11wsg8zyvooy1c4ozyqo4o0o8gy311zyn31470123cjq23 | ||
}} | }} | ||
The '''p43 | The '''p43 Snark loop''' is a [[period]] [[:Category:Oscillators with period 43|43]] [[oscillator]] made from [[Snark]] reflectors. It is the smallest of an infinite family of Snark-based [[adjustable glider loops]] that can have any period from 43 up. | ||
There are much smaller glider loops containing four gliders, with a total signal path length of 216+8n and therefore adjustable to any period of the form 54+2n. However, this is the smallest loop that can contain eight gliders, which is a requirement for universal adjustability. | |||
A 226-[[glider]] [[synthesis]] of this oscillator was discovered by Jeremy Tan on June 9, {{year|2019}}.<ref name="post77388" /> | |||
==References== | |||
<references> | |||
<ref name="post77388">{{LinkForumThread | |||
|format = ref | |||
|title = p43 snark loop synthesis | |||
|p = 77388 | |||
|author = Jeremy Tan | |||
|date = June 9, 2019 | |||
}}</ref> | |||
</references> | |||
==External links== | ==External links== | ||
{{LinkCatagolue|xp43_ylo8bp6o8g0s4gozyfggy31230343zyg346y133zym217wggx2c6ycgzyr1226yd6511zwg4cy7a64yo8acxooxg89fgkczw1plll2y7c871yfgs26y78llljgz651ui21x33x6a2yo4cay7641zy5ggkcydc88gzy51ycc68x11wsg8zyvooy1c4ozyqo4o0o8gy311zyn31470123cjq23|format=extended}} | {{LinkCatagolue|xp43_ylo8bp6o8g0s4gozyfggy31230343zyg346y133zym217wggx2c6ycgzyr1226yd6511zwg4cy7a64yo8acxooxg89fgkczw1plll2y7c871yfgs26y78llljgz651ui21x33x6a2yo4cay7641zy5ggkcydc88gzy51ycc68x11wsg8zyvooy1c4ozyqo4o0o8gy311zyn31470123cjq23|format=extended|patternname=p43 Snark loop}} | ||
{{Symmetry|90degree}} | {{Symmetry|90degree}} | ||
{{DISPLAYTITLE:p43 Snark loop}} |
Revision as of 10:45, 24 October 2019
p43 Snark loop | |||||||||
View static image | |||||||||
Pattern type | Oscillator | ||||||||
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Number of cells | 228 | ||||||||
Bounding box | 65 × 65 | ||||||||
Period | 43 | ||||||||
Mod | 43 | ||||||||
Heat | 66.05 | ||||||||
Volatility | 0.81 | ||||||||
Strict volatility | 0.81 | ||||||||
Discovered by | Mike Playle | ||||||||
Year of discovery | 2013 | ||||||||
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The p43 Snark loop is a period 43 oscillator made from Snark reflectors. It is the smallest of an infinite family of Snark-based adjustable glider loops that can have any period from 43 up.
There are much smaller glider loops containing four gliders, with a total signal path length of 216+8n and therefore adjustable to any period of the form 54+2n. However, this is the smallest loop that can contain eight gliders, which is a requirement for universal adjustability.
A 226-glider synthesis of this oscillator was discovered by Jeremy Tan on June 9, 2019.[1]
References
- ↑ Jeremy Tan (June 9, 2019). p43 snark loop synthesis (discussion thread) at the ConwayLife.com forums
External links
- p43 Snark loop at Adam P. Goucher's Catagolue (extended)
Categories:
- Patterns
- Oscillators with between 200 and 299 cells
- Periodic objects with minimum population between 200 and 299
- Patterns with between 200 and 299 cells
- Patterns found by Mike Playle
- Patterns found in 2013
- Patterns that can be constructed with between 200 and 299 gliders
- Oscillators
- Oscillators with period 43
- Prime-period oscillators
- Oscillators with mod 43
- Oscillators with heat 66
- Oscillators with volatility 0.81
- Oscillators with strict volatility 0.81
- Patterns with 90-degree rotation symmetry