Cross 2: Difference between revisions

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synth reduction
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|isorulemin  = B3-knqy/S2-n3jry
|isorulemin  = B3-knqy/S2-n3jry
|isorulemax  = B2kn34-acin5-ay6-i7c8/S234-airwz5678
|isorulemax  = B2kn34-acin5-ay6-i7c8/S234-airwz5678
|synthesis    = 30
|synthesis    = 29
|synthesisRLE = true
|synthesisRLE = true
|plaintext    = true
|plaintext    = true
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|apgcode      = xp3_s47117471174szt57y375tz1174471744711
|apgcode      = xp3_s47117471174szt57y375tz1174471744711
}}
}}
'''Cross 2''' is a {{period|3}} [[oscillator]] that was found on February 16, {{year|1993}} by [[Hartmut Holzwart]].<ref>{{CiteHickersonOscillators|accessdate=March 14, 2020}}</ref> It is the second smallest in an infinite family of period 3 oscillators, the first of which is [[cross]]. [[GUYTU6J]] found a {{gliders|32}} [[synthesis]] of this oscillator on February 10, {{year|2020}}.<ref name="post89254" />
'''Cross 2''' is a {{period|3}} [[oscillator]] that was found on February 16, {{year|1993}} by [[Hartmut Holzwart]].<ref>{{CiteHickersonOscillators|accessdate=March 14, 2020}}</ref> It is the second smallest in an infinite family of period 3 oscillators, the first of which is [[cross]].
 
[[GUYTU6J]] found a {{gliders|32}} [[synthesis]] of this oscillator on February 10, {{year|2020}}.<ref name="post89254" /> On January 24, {{year|2025}}, [[KtT]] lowered the cost to {{gliders|29|text=29 gliders}}.<ref name="post202264"/>


== Gallery ==
== Gallery ==
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|author = GUYTU6J
|author = GUYTU6J
|date  = February 10, 2020
|date  = February 10, 2020
}}</ref>
<ref name="post202264">{{LinkForumThread
|format = ref
|title  = Re: Synthesising Oscillators
|p      = 202264
|author = KtT
|date  = January 24, 2025
}}</ref>
}}</ref>
</references>
</references>

Revision as of 06:10, 28 January 2025

Cross 2
3bo2bobo2bo3b$3bo2bobo2bo3b$2b2o2bobo2b2o2b$3o4bo4b3o$7bo7b2$3o9b3o$3b 2o5b2o3b$3o9b3o2$7bo7b$3o4bo4b3o$2b2o2bobo2b2o2b$3bo2bobo2bo3b$3bo2bob o2bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ THUMBSIZE 2 ZOOM 16 GPS 2 ]]
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Pattern type Oscillator
Number of cells 60
Bounding box 15 × 15
Period 3 (mod: 3)
Heat 58.7
Volatility 0.85 | 0.85
Kinetic symmetry *c
Discovered by Hartmut Holzwart
Year of discovery 1993

Cross 2 is a period-3 oscillator that was found on February 16, 1993 by Hartmut Holzwart.[1] It is the second smallest in an infinite family of period 3 oscillators, the first of which is cross.

GUYTU6J found a 32-glider synthesis of this oscillator on February 10, 2020.[2] On January 24, 2025, KtT lowered the cost to 29 gliders.[3]

Generation 1 of cross 2, which led to its name

References

  1. ↑ Dean Hickerson's oscillator stamp collection. Retrieved on March 14, 2020.
  2. ↑ GUYTU6J (February 10, 2020). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
  3. ↑ KtT (January 24, 2025). Re: Synthesising Oscillators (discussion thread) at the ConwayLife.com forums
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