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New page: {{Oscillator|name=Smiley|pname=smiley|c=17|p=8|bx=7|by=8|h=22.5|discoverer=Achim Flammenkamp|discoveryear=1994|animated=yes|life105=true|life106=true|plaintext=true|rle=true}} '''Smiley'''...
 
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{{Oscillator|name=Smiley|pname=smiley|c=17|p=8|bx=7|by=8|h=22.5|discoverer=Achim Flammenkamp|discoveryear=1994|animated=yes|life105=true|life106=true|plaintext=true|rle=true}}
{{About|the oscillator|the block parent|Grin}}
'''Smiley''' is a [[period]] [[:Category:Oscillators with period 8|8]] [[oscillator]] that was found by [[Achim Flammenkamp]] in July [[:Category:Patterns found in 1994|1994]] and named by [[Alan Hensel]]. It is one of the few small oscillators with no known [[glider synthesis]].<ref>{{cite web|url=http://home.interserv.com/~mniemiec/objname.htm#S|title=Life Objects Sorted by Name (S)|author=Mark D. Niemiec|accessdate=May 2, 2009}}</ref>
{{Oscillator
|name             = Smiley
|pname           = smiley
|c               = 17
|bx              = 7
|by              = 8
|fc              = 42.4
|p                = 8
|m                = 4
|h               = 22.5
|v                = 1.00
|sv              = 1.00
|symmetry        = -c+e
|discoverer       = Achim Flammenkamp
|discoveryear     = 1994
|rulemin          = B3/S23
|rulemax          = B378/S23678
|isorulemin      = B3-kq/S2-en3aeijn
|isorulemax      = B2n34cejkqyz5-e6-ac78/S234-aj5akny678
|synthesis        = 8
|synthesisRLE    = true
|plaintext       = true
|rle             = true
|animated        = true
|viewerconfig    = #C [[ LOOP 8 GPS 4 THUMBSIZE 2 ]]
|apgcode          = xp8_2erore2z07x7
|pentadecathlonid = 17P8.1
}}
'''Smiley''' is a {{period|8}} [[oscillator]] that was found by [[Achim Flammenkamp]] on July 17, {{year|1994}}<ref>{{CiteHickersonOscillators|accessdate=March 14, 2020}}</ref> and named by [[Alan Hensel]].


==Image gallery==
In November 1994, [[Mark Niemiec]] noticed that its [[spark]]s can interact in [[boring]], but [[non-trivial]] ways with other oscillators, optionally creating [[LCM oscillator]]s of higher periods.<ref name="post22689" />
 
== Commonness ==
On [[Catagolue]], it is the fourth [[List of common oscillators|most common]] period 8 oscillator, being less common than [[Coe's p8]] but slightly more common than [[Achim's p8]].<ref>{{citeCatagolueStats|October 27, 2018}}</ref>
 
== Glider synthesis ==
A 28-glider [[Glider synthesis|synthesis]] for the oscillator was discovered in October {{year|2007}} by [[Jason Summers]].<ref>{{CiteSummersPattern|name=jslife|accessdate=January 5, 2020}}</ref><ref>{{LinkGoLNews|2008/01/oscillator_construction.html|title=Oscillator Construction|date=January 6, 2008|author=Heinrich Koenig}}</ref> In November {{year|2014}}, [[Martin Grant]] posted an {{gliders|11|brief}}-glider synthesis based on a [[symmetric]] [[soup]] found by [[Ivan Fomichev]] using [[apgsearch]].<ref name="post14619" /> In August {{year|2015}}, [[Matthias Merzenich]] posted an {{gliders|8}} synthesis<ref name="post21605" /> based on the first asymmetric soup, found by [[Adam P. Goucher]].<ref name="post21578" />
 
== Image gallery ==
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|}


==References==
== See also ==
<references />
* [[Monogram]]


==External links==
== References ==
{{LinkWeisstein|Smiley.html}}
<references>
<ref name="post22689">{{LinkForumThread
|format = ref
|p          = 22689
|title      = Re: Gustavo Ramos Rehermann's patterns
|author    = Mark Niemiec
|date      = September 18, 2015
}}</ref>
<ref name="post14619">{{LinkForumThread
|format = ref
|title  = Re: Soup search results
|p      = 14619
|author = Martin Grant
|date  = November 28, 2014
}}</ref>
<ref name="post21605">{{LinkForumThread
|format = ref
|title  = Re: Soup search results
|p      = 21605
|author = Matthias Merzenich
|date  = August 1, 2015
}}</ref>
<ref name="post21578">{{LinkForumThread
|format = ref
|title  = Re: Soup search results
|p      = 21578
|author = Martin Grant
|date  = July 31, 2015
}}</ref>
</references>
 
== External links ==
{{LinkLexicon|lex_s.htm#smiley}}
{{LinkLexicon|lex_s.htm#smiley}}
{{LinkCatagolue|xp8_2erore2z07x7}}
{{LinkPentadecathlonObject|17P8.1}}
{{Sparker|p=8|type=dot|strength=moderate}}
__NOTOC__

Latest revision as of 16:20, 21 February 2026

This article is about the oscillator. For the block parent, see Grin.
Smiley
x = 7, y = 7, rule = B3/S23 3ob3o$bobobo2$bo3bo2$obobobo$2bobo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ LOOP 8 GPS 4 THUMBSIZE 2 ]]
View animated image
View static image
Pattern type Oscillator
Number of cells 17
Bounding box 7 × 8
Frequency class 42.4
Period 8 (mod: 4)
Heat 22.5
Volatility 1.00 | 1.00
Kinetic symmetry -c+e
Discovered by Achim Flammenkamp
Year of discovery 1994

Smiley is a period-8 oscillator that was found by Achim Flammenkamp on July 17, 1994[1] and named by Alan Hensel.

In November 1994, Mark Niemiec noticed that its sparks can interact in boring, but non-trivial ways with other oscillators, optionally creating LCM oscillators of higher periods.[2]

Commonness

On Catagolue, it is the fourth most common period 8 oscillator, being less common than Coe's p8 but slightly more common than Achim's p8.[3]

Glider synthesis

A 28-glider synthesis for the oscillator was discovered in October 2007 by Jason Summers.[4][5] In November 2014, Martin Grant posted an 11-glider synthesis based on a symmetric soup found by Ivan Fomichev using apgsearch.[6] In August 2015, Matthias Merzenich posted an 8-glider synthesis[7] based on the first asymmetric soup, found by Adam P. Goucher.[8]

Generation 2 reveals the reason for smiley's name

See also

References

  1. ↑ Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
  2. ↑ Mark Niemiec (September 18, 2015). Re: Gustavo Ramos Rehermann's patterns (discussion thread) at the ConwayLife.com forums
  3. ↑ Adam P. Goucher. "Statistics". Catagolue. Retrieved on October 27, 2018.
  4. ↑ Jason Summers' jslife pattern collection. Retrieved on January 5, 2020.
  5. ↑ Oscillator Construction at Game of Life News. Posted by Heinrich Koenig on January 6, 2008.
  6. ↑ Martin Grant (November 28, 2014). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  7. ↑ Matthias Merzenich (August 1, 2015). Re: Soup search results (discussion thread) at the ConwayLife.com forums
  8. ↑ Martin Grant (July 31, 2015). Re: Soup search results (discussion thread) at the ConwayLife.com forums


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