Difference between revisions of "P72 quasi-shuttle"

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(correct the explanation of why the quasi-shuttle is not a shuttle)
 
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|isorulemin      = B3/S23
|isorulemin      = B3/S23
|isorulemax      = B3/S234c5ek6i7e
|isorulemax      = B3/S234c5ek6i7e
|synthesis        = 26
|plaintext        = true
|plaintext        = true
|rle              = true
|rle              = true
|viewerconfig    = #C [[ THUMBSIZE 2 Z 12 GPS 5 LOOP 72 ]]
|viewerconfig    = #C [[ THUMBSIZE 2 Z 12 GPS 6 LOOP 72 ]]
|apgcode          = xp72_gk2gb3y8ggggy1oomewccz11yc168972y0cczoo0gyaomhpe4xgjjz0240dcyh1167w33
|apgcode          = xp72_gk2gb3y8ggggy1oomewccz11yc168972y0cczoo0gyaomhpe4xgjjz0240dcyh1167w33
|pentadecathlonid = 84P72.1
|pentadecathlonid = 84P72.1
}}
}}


'''P72 quasi-shuttle''' is a [[period]] [[:Category:Oscillators with period 72|72]] [[oscillator]] (a [[twin bee shuttle]] variant) with found by [[Jason Summers]] in August [[:Category:Patterns found in 2005|2005]]. It consists of two [[B-heptomino|B-heptominoes]] being [[hassle|hassled]] by two [[figure eight|figure eights]] and two [[unix|unices]]. In 18 generations the [[B-heptomino]]es are flipped into a [[century|centuries]] and a pair of [[block]]s by [[unix|unices]], which then reacts with the blocks and [[figure eight]]s to be flipped back into [[B-heptomino]]es in 61 generations, but with extra blocks. The extra blocks move the B-heptominoes forward without leaving extra centuries. Although this looks at first sight like a [[shuttle]], it isn't really, because each side of the oscillator uses a different hassling reaction. Like a regular [[twin bee shuttle]], it can reflect gliders.
'''p72 quasi-shuttle''' is a {{period|72}} [[oscillator]] found by [[Jason Summers]] on August 19, {{year|2005}}.<ref>{{CiteSummersPattern|name=jslife|accessdate=March 14, 2020}}</ref>
 
A [[twin bees shuttle]] variant, it consists of two [[B-heptomino]]es being [[hassle]]d by two [[figure eight]]s and two [[unix|unices]]. In 18 generations the B-heptominoes are flipped into a [[century|centuries]] and a pair of [[block]]s by unices, which then reacts with the blocks and figure eights to be flipped back into B-heptominoes in 61 generations, but with extra blocks. The extra blocks move the B-heptominoes forward without leaving extra centuries. Although this looks at first sight like a [[shuttle]], it isn't really, because the active object does not appear flipped at any point. Like a regular twin bees shuttle, it can reflect gliders with the duoplet spark.
 
There is a 96-cell [[dimer]] with static symmetry D4_+2 that is notably [[statorless]], and has the same cost in glider synthesis.
 
==References==
<references />


==External links==
==External links==
{{LinkLexicon|lex_p.htm#p72quasishuttle|name=p72 quasi-shuttle}}
{{LinkLexicon|lex_p.htm#p72quasishuttle|name=p72 quasi-shuttle}}
{{LinkCatagolue|xp72_gk2gb3y8ggggy1oomewccz11yc168972y0cczoo0gyaomhpe4xgjjz0240dcyh1167w33|patternname=p72 quasi-shuttle}}
{{LinkCatagolue|xp72_gk2gb3y8ggggy1oomewccz11yc168972y0cczoo0gyaomhpe4xgjjz0240dcyh1167w33|patternname=p72 quasi-shuttle}}
{{LinkCatagolue|xp72_ooo777ybgggy0gggyb777oooz111y979b3y83b97y9111zoooy9e9dc0gggy0ggg0cd9ey9oooz111eeeyz0eee111|patternname=Statorless p72 quasi-shuttle dimer}}
{{LinkPentadecathlonObject|84P72.1}}
{{LinkPentadecathlonObject|84P72.1}}


{{Sparker|p=72|type=reflecting duoplet|strength=strong|type2=domino}}
{{Symmetry|orthogonal2}}
{{Symmetry|orthogonal2}}
{{DISPLAYTITLE:p72 quasi-shuttle}}
{{DISPLAYTITLE:p72 quasi-shuttle}}

Latest revision as of 13:14, 17 February 2024

p72 quasi-shuttle
x = 37, y = 23, rule = B3/S23 30bo$29b2o$28bob2o$b4o22b3o2bo$o4bo23bobobo$o3bobo23bobobo$bo3bobo6b2o 15bo2b3o$7bo5bobo16b2obo$7bo5bo19b2o$4bo2bo5b3o17bo$5b2o2$5b2o$4bo2bo 5b3o17bo$7bo5bo19b2o$7bo5bobo16b2obo$bo3bobo6b2o15bo2b3o$o3bobo23bobob o$o4bo23bobobo$b4o22b3o2bo$28bob2o$29b2o$30bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ THUMBSIZE 2 Z 12 GPS 6 LOOP 72 ]]
Pattern type Oscillator
Number of cells 84
Bounding box 37 × 23
Period 72
Mod 72
Heat 80.6
Volatility 0.96
Strict volatility 0.59
Discovered by Jason Summers
Year of discovery 2005

p72 quasi-shuttle is a period-72 oscillator found by Jason Summers on August 19, 2005.[1]

A twin bees shuttle variant, it consists of two B-heptominoes being hassled by two figure eights and two unices. In 18 generations the B-heptominoes are flipped into a centuries and a pair of blocks by unices, which then reacts with the blocks and figure eights to be flipped back into B-heptominoes in 61 generations, but with extra blocks. The extra blocks move the B-heptominoes forward without leaving extra centuries. Although this looks at first sight like a shuttle, it isn't really, because the active object does not appear flipped at any point. Like a regular twin bees shuttle, it can reflect gliders with the duoplet spark.

There is a 96-cell dimer with static symmetry D4_+2 that is notably statorless, and has the same cost in glider synthesis.

References

  1. Jason Summers' jslife pattern collection. Retrieved on March 14, 2020.

External links