BTS: Difference between revisions
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On December 13, {{year|2020}}, [[MathAndCode]] found a {{gliders|10}} [[synthesis]] of this still life.<ref name="post115747" /> | On December 13, {{year|2020}}, [[MathAndCode]] found a {{gliders|10}} [[synthesis]] of this still life.<ref name="post115747" /> | ||
=BTS as a catalyst= | |||
{{EmbedViewer | |||
|rle = 6b2o18b2o$5bo19bo$5bo19bo$5b3o12b2o3b3o$2b2o16bo2bo$bobo17b3o$bo$2o15b | |||
2obob2o$17bob2obo$22bo$22b2o! | |||
|position = center | |||
|viewerconfig = #C [[ GPS 2 THUMBSIZE 2 STOP 3 ]] | |||
|caption = BTS as a [[ eater 1 ]] replacement. | |||
}} | |||
==References== | ==References== | ||
<references> | <references> | ||
Revision as of 16:57, 1 September 2021
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| Pattern type | Strict still life | ||||||||
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| Number of cells | 19 | ||||||||
| Bounding box | 7 × 8 | ||||||||
| Static symmetry | Unspecified | ||||||||
| Discovered by | Mark Niemiec | ||||||||
| Year of discovery | Unknown | ||||||||
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BTS, short for bookend-table-snake, is a 19-cell still life that can be used as a catalyst in a number of ways. Typically, only at least one of two specific cells of the bookend will ever die during a catalysis. The BTS is primarily used in a growing selection of non-Spartan Herschel conduits.
The BTS was first officially enumerated as a still life by Mark Niemiec, but it was not until 2015 that Tanner Jacobi noticed (and somewhat popularized) its usefulness, due to its extensive appearances in results generated by Mike Playle's Bellman program.[1] One example of the surprising number of ways to use this object as a catalyst for signal circuitry can be seen in the CC semi-cenark entry.
On December 13, 2020, MathAndCode found a 10-glider synthesis of this still life.[2]
BTS as a catalyst
| BTS as a eater 1 replacement. (click above to open LifeViewer) |
References
- ↑ Tanner Jacobi (March 19, 2015). Re: Catalyst improvements WIP (discussion thread) at the ConwayLife.com forums
- ↑ MathAndCode (December 13, 2020). Re: Still Life Synthesis Thread (discussion thread) at the ConwayLife.com forums
External links
- BTS at the Life Lexicon
- BTS at Adam P. Goucher's Catagolue
- Nineteen-Bit Life Objects at Mark D. Niemiec's Life Page