BTS: Difference between revisions
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Revision as of 12:47, 28 July 2022
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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.
Use as a catalyst
| BTS as eater 1 replacement (click above to open LifeViewer) RLE: here Plaintext: here |
Information on this still life's commonness with respect to other naturally-occurring patterns is currently unknown.
On December 13, 2020, MathAndCode found a 10-glider synthesis of this still life.[2]
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