Difference between revisions of "P28 pre-pulsar shuttle"

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(Undo revision 61141 by Ian07 (talk): On second thought, that's actually a smaller newshuttle that Buckingham found, and it's not very similar to PPS28 other than its period)
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{{Oscillator
{{Oscillator
|name            = Pre-pulsar shuttle 28
|name            = p28 pre-pulsar shuttle
|pname            = prepulsarshuttle28
|pname            = p28prepulsarshuttle
|f1              = Shuttle
|f1              = Shuttle
|c                = 54
|c                = 53
|bx              = 22
|bx              = 17
|by              = 16
|by              = 22
|p                = 28
|p                = 28
|m                = 14
|m                = 28
|h                = 33.1
|h                = 35.9
|v                = 0.82
|v                = 0.89
|sv              = 0.67
|sv              = 0.83
|discoverer      = thunk
|discoverer2      = David Buckingham
|discoverer3      = Bill Gosper
|discoveryear    = 2016
|rulemin          = B3/S23
|rulemin          = B3/S23
|rulemax          = B3/S2378
|rulemax          = B3/S2378
|rulespecial      = [[Conway's Game of Life|Conway Life]]
|rulespecial      = [[Conway's Game of Life|Conway Life]]
|isorulemin      = B3-ky/S23-kq
|isorulemin      = B3aceijnqr/S23aceijnqry
|isorulemax      = B34kq5-ce6-in7e/S234cktyz5aknr6-c78
|isorulemax      = B35jnry6acek7e/S234ctyz5anr6in78
|synthesis        = 36
|plaintext        = true
|plaintext        = true
|rle              = true
|rle              = true
|animated        = true
|animated        = true
|apgcode          = xp28_g8gcscy333xoge2z1ii1x676x676z34atsy4ggx62sgzy911
|apgcode          = xp28_oow4a4y1ca23zwsx44ay2iczwex88kz66w8k8xg8keezy61221
|pentadecathlonid = 54P28.1
|viewerconfig    = #C [[ GPS 4 ZOOM 12 LOOP 28 ]]
}}
}}
'''Pre-pulsar shuttle 28''' is a {{period|28}} [[pre-pulsar]] [[shuttle]] [[oscillator]]. It consists of a pre-pulsar being [[hassle]]d by two 14-generation shuttle mechanisms.  
'''p28 pre-pulsar shuttle''' is a {{period|28}} [[pre-pulsar]] [[shuttle]] [[oscillator]]. It consists of a pre-pulsar being [[hassle]]d by two 14-generation shuttle mechanisms.  


A smaller 14-generation pre-pulsar shuttle mechanism was found by [[thunk]] on November 17, {{year|2016}}, allowing the construction of a {{cells|53}} variant of the shuttle. This variant was tied with [[mold on 41P7.2]] and [[T-nosed p4 on 28P7.4]] as the smallest known non-trivial period 28 oscillator until the discovery of [[mold on 34P14 shuttle]] in {{year|2018}}.
[[David Buckingham]] discovered the first period-28 pre-pulsar shuttle, [[newshuttle]], in {{year|1973}}. The variant shown at right was found by [[thunk]] on November 17, {{year|2016}},<ref name="post37381"/> and incorporates shuttle mechanisms by David Buckingham ([[block]] and [[eater]]), [[Bill Gosper]] ([[mold]]), and thunk (blocks, [[blinker]]s, and [[tub]]s). In terms of its {{cells|53}} cells, this oscillator was tied with [[mold on 41P7.2]] and [[T-nosed p4 on 28P7.4]] as the smallest known non-trivial period-28 oscillator until the discovery of [[mold on 34P14 shuttle]] in {{year|2018}}.


==Gallery==
==Gallery==
{|
{|
|-
|-
| [[File:Prepulsarshuttle28variant.png|frame|left|A pre-pulsar shuttle 28 variant with a minimum population of 53.<br />[[:File:Prepulsarshuttle28variant.gif|View animated image]].<br />{{JavaRLE|prepulsarshuttle28variant|brief}}<br />{{LinkCatagolue|code=xp28_oow4a4y1ca23zwsx44ay2iczwex88kz66w8k8xg8keezy61221|style=brief}}]]
| [[File:p28prepulsarshuttlegen4.png|frame|left|Generation 4 reveals that the object being hassled is a pre-pulsar]]
|}
|}


==See also==
==See also==
*[[Karel's p28]]
*[[Karel's p28]]
*[[Newshuttle]]
*[[Pre-pulsar shuttle]]
*[[:Category:Pre-pulsar shuttle oscillators|Pre-pulsar shuttle oscillators]]
 
==References==
<references>
<ref name="post37381">{{LinkForumThread
|format = ref
|title  = Re: Soup search results
|p      = 37381
|author = Matthias Merzenich
|date  = November 17, 2016
}}</ref>
</references>


== External links ==
== External links ==
{{LinkCatagolue|xp28_g8gcscy333xoge2z1ii1x676x676z34atsy4ggx62sgzy911}}
{{LinkCatagolue|xp28_g8gcscy333xoge2z1ii1x676x676z34atsy4ggx62sgzy911|patternname=p28 pre-pulsar shuttle}}
{{LinkPentadecathlonObject|54P28.1}}
{{LinkPentadecathlonObject|54P28.1}} (54-cell variant)
 
{{Symmetry|osc=flip}}


[[Category:Pre-pulsar shuttle oscillators]]
[[Category:Pre-pulsar shuttle oscillators]]
{{DISPLAYTITLE:p28 pre-pulsar shuttle}}

Revision as of 11:08, 9 December 2019

p28 pre-pulsar shuttle
x = 17, y = 22, rule = B3/S23 4b2o$3bo2bo$2bobobo4bo$2bo2bo4bobo$bo9bo3b2o$2bobo10b2o2$8b3o$8bobo$8b 3o2b3o4$2o6b3o2b3o$2o6bobo$8b3o2$15b2o$3b2o6bo3b2o$4bo5bobo$b3o7bo$bo! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ AUTOSTART ]] #C [[ GPS 4 ZOOM 12 LOOP 28 ]]
View animated image
View static image
Pattern type Oscillator
Oscillator type Shuttle
Number of cells 53
Bounding box 17 × 22
Period 28
Mod 28
Heat 35.9
Volatility 0.89
Strict volatility 0.83
Discovered by thunk
David Buckingham
Bill Gosper
Year of discovery 2016

p28 pre-pulsar shuttle is a period-28 pre-pulsar shuttle oscillator. It consists of a pre-pulsar being hassled by two 14-generation shuttle mechanisms.

David Buckingham discovered the first period-28 pre-pulsar shuttle, newshuttle, in 1973. The variant shown at right was found by thunk on November 17, 2016,[1] and incorporates shuttle mechanisms by David Buckingham (block and eater), Bill Gosper (mold), and thunk (blocks, blinkers, and tubs). In terms of its 53 cells, this oscillator was tied with mold on 41P7.2 and T-nosed p4 on 28P7.4 as the smallest known non-trivial period-28 oscillator until the discovery of mold on 34P14 shuttle in 2018.

Gallery

Generation 4 reveals that the object being hassled is a pre-pulsar

See also

References

  1. ↑ Matthias Merzenich (November 17, 2016). Re: Soup search results (discussion thread) at the ConwayLife.com forums

External links

Retrieved from "https://conwaylife.com/w/index.php?title=P28_pre-pulsar_shuttle&oldid=65684"