Pyrotechnecium: Difference between revisions

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Definition from Lexicon Release 29
 
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{{Oscillator
{{Oscillator
|name         = pyrotechnecium
|name             = Pyrotechnecium
|pname       = pyrotechnecium
|pname           = pyrotechnecium
|c           = 40
|c               = 40
|bx           = 16
|bx               = 16
|by           = 10
|by               = 10
|p           = 8
|p               = 8
|m           = 8
|m               = 8
|h           = 8
|h               = 8
|v           = 0.32
|v               = 0.32
|sv           = 0.32
|sv               = 0.32
|discoverer   = Dave Buckingham
|symmetry        = .k
|discoveryear = 1972
|discoverer       = David Buckingham
|rle         = true
|discoveryear     = 1972
|viewerconfig = #C [[ THUMBSIZE 2 Z 20 GPS 2 LOOP 8 ]]
|rulemin          = B3/S23
|rulemax          = B378/S2378
|rulespecial      = [[Conway's Game of Life|Conway Life]]
|isorulemin      = B3-ackq/S23-a
|isorulemax      = B2cn34cikqyz5ac6aen78/S234-iny5-en6-k78
|synthesis        = 32
|synthesis2      = 26
|plaintext        = true
|rle             = true
|viewerconfig     = #C [[ THUMBSIZE 2 Z 20 GPS 2 LOOP 8 ]]
|apgcode          = xp8_0gwo4aa3q2s0g8gz121078boaa43w1
|apgcode2        = xp8_w2596z8u19ptl2sgz01255k443zy03452
|pentadecathlonid = 40P8.5
}}
}}
'''Pyrotechnecium''' is a {{period|8}} [[billiard table]] [[oscillator]] found by [[David Buckingham]] in {{year|1972}}.<ref>{{CiteLifeline|vol=9|pages=page 3}}</ref><ref>{{CiteHickersonOscillators|accessdate=March 14, 2020}}</ref>


'''Pyrotechnecium''' is a [[period]] p8 [[billiard table]] [[oscillator]] found by Dave Buckingham in 1972.
On September 21, {{year|2025}}, [[PK22]] found a {{gliders|34}} synthesis of a stator variant using loaves instead of tubs.<ref name="post218327"/><ref name="j11432629975"/> The next day, [[KtT]] used it to complete a {{gliders|40}} synthesis of the canonical oscillator.<ref name="post218347"/><ref name="j11435087930"/> KtT reduced the cost of the canonical form to {{gliders|38|text=38 gliders}} on December 7, {{year|2025}}.<ref name="post222356"/><ref name="j12347606973"/>


==External links==
== References ==
<references>
<ref name="j11432629975">{{CiteCatagolueJob|job=11432629975|date=September 21, 2025}}</ref>
<ref name="j11435087930">{{CiteCatagolueJob|job=11435087930|date=September 22, 2025}}</ref>
<ref name="j12347606973">{{CiteCatagolueJob|job=12347606973|date=December 7, 2025}}</ref>
<ref name="post218327">{{LinkForumThread
|format = ref
|p      = 218327
|title  = Re: Synthesising Oscillators
|author = PK22
|date  = September 21, 2025
}}</ref>
<ref name="post218347">{{LinkForumThread
|format = ref
|p      = 218347
|title  = Re: Synthesising Oscillators
|author = KtT
|date  = September 22, 2025
}}</ref>
<ref name="post222356">{{LinkForumThread
|format = ref
|p      = 222356
|title  = Re: Synthesising Oscillators
|author = KtT
|date  = December 6, 2025 <!-- date of post -->
}}</ref>
</references>
 
== External links ==
{{LinkLexicon|lex_p.htm#pulshuttlev}}
{{LinkLexicon|lex_p.htm#pulshuttlev}}
{{LinkCatagolue|xp8_0gwo4aa3q2s0g8gz121078boaa43w1}}
{{LinkPentadecathlonObject|40P8.5}}

Latest revision as of 16:43, 10 January 2026

Pyrotechnecium
x = 16, y = 10, rule = B3/S23 7bo$5b5o$4bo5bo$bo2bobob2obo$obobobo4bo2bo$bo2bo4bobobobo$4bob2obobo2b o$5bo5bo$6b5o$8bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ THUMBSIZE 2 Z 20 GPS 2 LOOP 8 ]]
View static image
Pattern type Oscillator
Number of cells 40
Bounding box 16 × 10
Period 8 (mod: 8)
Heat 8
Volatility 0.32 | 0.32
Kinetic symmetry .k
Discovered by David Buckingham
Year of discovery 1972

Pyrotechnecium is a period-8 billiard table oscillator found by David Buckingham in 1972.[1][2]

On September 21, 2025, PK22 found a 34-glider synthesis of a stator variant using loaves instead of tubs.[3][4] The next day, KtT used it to complete a 40-glider synthesis of the canonical oscillator.[5][6] KtT reduced the cost of the canonical form to 38 gliders on December 7, 2025.[7][8]

References

  1. ↑ Robert Wainwright (March 1973). Lifeline, vol 9, page 3.
  2. ↑ Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
  3. ↑ PK22 (September 21, 2025). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  4. ↑ shinjuku (#11432629975) (September 21, 2025). Job triggered by Adam P. Goucher at GitLab Catagolue project.
  5. ↑ KtT (September 22, 2025). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  6. ↑ shinjuku (#11435087930) (September 22, 2025). Job triggered by Adam P. Goucher at GitLab Catagolue project.
  7. ↑ KtT (December 6, 2025). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  8. ↑ shinjuku (#12347606973) (December 7, 2025). Job triggered by Adam P. Goucher at GitLab Catagolue project.
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