Difference between revisions of "P43 Snark loop"

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An '''adjustable glider loop''' is an [[oscillator]] composed of [[stable reflector]]s, whose positioning and distances can be adjusted to give new periods.
== Snark loop ==
{{Oscillator
{{Oscillator
|name        = P43 glider loop
|name        = p43 snark loop
|pname        = p43gliderloop
|pname        = p43gliderloop
|c            = 228
|c            = 228
Line 12: Line 8:
|m            = 43
|m            = 43
|h            = 66.05
|h            = 66.05
|v            = 0.8128
|v            = 0.81
|discoverer  = Mike Playle
|discoveryear = 2013
|rulemin      = B3/S23
|rulemin      = B3/S23
|rulemax      = B38/S238
|rulemax      = B38/S238
|rle = true
|rulespecial  = [[Conway's Game of Life|Conway Life]]
|viewerconfig = #C [[ THUMBSIZE 3 GPS 4 ZOOM 7 HEIGHT 600 WIDTH 600 ]]
|isorulemin  = B3/S23
|isorulemax  = B34c8/S234c5e6n8
|synthesis    = 226
|rle         = true
|viewerconfig = #C [[ THUMBSIZE 2 GPS 10 LOOP 43 ZOOM 8 HEIGHT 600 WIDTH 600 POPUPHEIGHT 600 POPUPWIDTH 600 ]]
|apgcode      = xp43_ylo8bp6o8g0s4gozyfggy31230343zyg346y133zym217wggx2c6ycgzyr1226yd6511zwg4cy7a64yo8acxooxg89fgkczw1plll2y7c871yfgs26y78llljgz651ui21x33x6a2yo4cay7641zy5ggkcydc88gzy51ycc68x11wsg8zyvooy1c4ozyqo4o0o8gy311zyn31470123cjq23
}}
}}
'''92P51''' is the smallest known p51 [[oscillator]].
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>


The '''snark loop''' is a glider made from [[snark]] reflectors, which allow periods of 43 and higher.
==External links==
{{LinkCatagolue|xp43_ylo8bp6o8g0s4gozyfggy31230343zyg346y133zym217wggx2c6ycgzyr1226yd6511zwg4cy7a64yo8acxooxg89fgkczw1plll2y7c871yfgs26y78llljgz651ui21x33x6a2yo4cay7641zy5ggkcydc88gzy51ycc68x11wsg8zyvooy1c4ozyqo4o0o8gy311zyn31470123cjq23|format=extended|patternname=p43 snark loop}}


Shown to the right is an example of a period 43 loop.
{{Symmetry|90degree}}
{{DISPLAYTITLE:p43 snark loop}}

Revision as of 18:11, 7 July 2019

p43 snark loop
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View static image
Pattern type Oscillator
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

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

  1. ↑ Jeremy Tan (June 9, 2019). p43 snark loop synthesis (discussion thread) at the ConwayLife.com forums

External links


Retrieved from "https://conwaylife.com/w/index.php?title=P43_Snark_loop&oldid=62502"