Difference between revisions of "Jolson"

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{{Oscillator
 
{{Oscillator
|name         = Jolson
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|name             = Jolson
|pname       = jolson
+
|pname           = jolson
|c           = 42
+
|c               = 42
|bx           = 18
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|bx               = 18
|by           = 22
+
|by               = 22
|p           = 15
+
|p               = 15
|h           = 47.9
+
|m                = 15
|v           = 0.98
+
|h               = 47.9
|discoverer   = Robert Wainwright
+
|v               = 0.98
|discoveryear = 1984
+
|sv              = 0.98
|rulemin     = B3/S23
+
|discoverer       = Robert Wainwright
|rulemax     = B3/S023
+
|discoveryear     = 1984
|rulespecial = [[Conway's Game of Life|Conway Life]]
+
|rulemin         = B3/S23
|synthesis    = 13
+
|rulemax         = B3/S023
|synthesisRLE = true
+
|rulespecial     = [[Conway's Game of Life|Conway Life]]
|life105      = true
+
|isorulemin      = B3-ky/S23-ckr
|life106      = true
+
|isorulemax      = B34cnt5-eiy6-ik7c/S0234cjkqyz5cekr6-ck
|plaintext   = true
+
|synthesis        = 13
|rle         = true
+
|synthesisRLE    = true
|animated     = yes
+
|plaintext       = true
|apgcode     = xp15_3v3y64r4z9g9y0jjy04r4zcfcy011
+
|rle             = true
 +
|animated         = yes
 +
|apgcode         = xp15_3v3y64r4z9g9y0jjy04r4zcfcy011
 +
|pentadecathlonid = 42P15.1
 +
|viewerconfig    = #C [[ GPS 3 ZOOM 12 LOOP 15 ]]
 
}}
 
}}
'''Jolson''' (also known as '''Al Jolson''') is a [[period]] [[:Category:Oscillators with period 15|15]] [[oscillator]] consisting of two [[block|blocks]] hassled by two [[pentadecathlon|pentadecathlons]]. It was found by [[:Category:Patterns found by Robert Wainwright|Robert Wainwright]] in November [[:Category:Patterns found in 1984|1984]] and named by [[:Category:Patterns found by Bill Gosper|Bill Gosper]]. A period [[:Category:Oscillators with period 9|9]] version that uses two [[snacker]]s instead of pentadecathlons is also possible (see below). It is not possible to create a period 45 version by using one snacker and one pentadecathlon, however, as the [[spark]]s end up destroying one of the middle blocks.
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'''Jolson''' (also known as '''Al Jolson'''{{refn|group=note|The name is a reference to [https://en.wikipedia.org/wiki/Al_Jolson Al Jolson], a famous American singer.}}) is a {{period|15}} [[oscillator]] consisting of two [[block]]s [[hassle]]d by two [[pentadecathlon]]s. It was found by [[Robert Wainwright]] in November {{year|1984}} and named by [[Bill Gosper]].
 +
 
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The hassling mechanism requires two [[domino]] [[spark]]s, constantly 3 generations apart, provided by [[sparker]]s of period 9 or above (e.g. [[Merzenich's p31]]). A period {{period|9|brief}} version that uses two [[snacker]]s is possible (see below), but p14 (with [[tetradecathlon]]s) is impossible.<ref name="post81227" />
  
 
==Image gallery==
 
==Image gallery==
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|[[Image:Jolsonorigin.png|framed|One of the phases of Jolson, which led to its name]]
 
|[[Image:Jolsonorigin.png|framed|One of the phases of Jolson, which led to its name]]
 
|}
 
|}
 +
 +
==Notes==
 +
<references group="note" />
 +
 +
==References==
 +
<references>
 +
<ref name="post81227">{{LinkForumThread
 +
|format = ref
 +
|title  = Re: Oscillator Discussion Thread
 +
|p      = 81227
 +
|author = Mark Niemiec
 +
|date  = August 14, 2019
 +
}}</ref>
 +
</references>
  
 
==External links==
 
==External links==
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{{LinkLexicon|lex_j.htm#jolson}}
 
{{LinkLexicon|lex_j.htm#jolson}}
 
{{LinkCatagolue|xp15_3v3y64r4z9g9y0jjy04r4zcfcy011}}
 
{{LinkCatagolue|xp15_3v3y64r4z9g9y0jjy04r4zcfcy011}}
 +
{{LinkPentadecathlonObject|42P15.1}}
 +
 +
__NOTOC__

Latest revision as of 18:46, 28 September 2019

Jolson
x = 13, y = 19, rule = B3/S23 b2o6b2o$o2bo4bo2bo$o2bo4bo2bo$o2bo4bo2bo$b2o6b2o3$7bo$5bo2bob2o$6b2o2b 2o3$6b4o$5b6o$4b8o$3b2o6b2o$4b8o$5b6o$6b4o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 3 ZOOM 12 LOOP 15 ]]
Pattern type Oscillator
Number of cells 42
Bounding box 18×22
Period 15
Mod 15
Heat 47.9
Volatility 0.98
Strict volatility 0.98
Discovered by Robert Wainwright
Year of discovery 1984

Jolson (also known as Al Jolson[note 1]) is a period 15 oscillator consisting of two blocks hassled by two pentadecathlons. It was found by Robert Wainwright in November 1984 and named by Bill Gosper.

The hassling mechanism requires two domino sparks, constantly 3 generations apart, provided by sparkers of period 9 or above (e.g. Merzenich's p31). A period 9 version that uses two snackers is possible (see below), but p14 (with tetradecathlons) is impossible.[1]

Image gallery

The period 9 version of Jolson
Download RLE: click here
One of the phases of Jolson, which led to its name

Notes

  1. The name is a reference to Al Jolson, a famous American singer.

References

  1. Mark Niemiec (August 14, 2019). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums

External links

  • 42P15.1 at Heinrich Koenig's Game of Life Object Catalogs