I-heptomino: Difference between revisions
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'''I-heptomino''' is the name given by [[Conway]] to the [[heptomino]] shown in the infobox. After one generation, this converges to the same [[evolution]]ary sequence as the [[H-heptomino]]. The name I rather than H was chosen as standard for this sequence because [[conduit]]s use one-letter names and H is the [[Herschel]]. | |||
The longest-lasting active reaction is the standard evolutionary sequence of a Herschel, at the bottom of the pattern below: | |||
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In the following examples, on the top, there are two six-cell polyplets that follow the I-heptomino sequence. The one on the left becomes the I-heptomino itself, while the one on the right follows a slightly different sequence. On the bottom, there are two [[house]]s with one cell removed each; both follow the I-heptomino sequence. | In the following examples, on the top, there are two six-cell polyplets that follow the I-heptomino sequence. The one on the left becomes the I-heptomino itself, while the one on the right follows a slightly different sequence. On the bottom, there are two [[house]]s with one cell removed each; both follow the I-heptomino sequence. | ||
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Revision as of 13:40, 15 June 2023
| I-heptomino | |||||||||
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| Pattern type | Miscellaneous | ||||||||
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| Number of cells | 7 | ||||||||
| Bounding box | 4 × 4 | ||||||||
| Static symmetry | Unspecified | ||||||||
| Discovered by | Unknown | ||||||||
| Year of discovery | 1971 | ||||||||
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I-heptomino is the name given by Conway to the heptomino shown in the infobox. After one generation, this converges to the same evolutionary sequence as the H-heptomino. The name I rather than H was chosen as standard for this sequence because conduits use one-letter names and H is the Herschel.
The longest-lasting active reaction is the standard evolutionary sequence of a Herschel, at the bottom of the pattern below:
| (click above to open LifeViewer) RLE: here Plaintext: here |
In the following examples, on the top, there are two six-cell polyplets that follow the I-heptomino sequence. The one on the left becomes the I-heptomino itself, while the one on the right follows a slightly different sequence. On the bottom, there are two houses with one cell removed each; both follow the I-heptomino sequence.
| (click above to open LifeViewer) RLE: here Plaintext: here |
The century sequence has a phase around generation 53 that is an I-heptomino sequence plus five stable objects (three blocks, a beehive, and a toad). The I sequence then hits the beehive, destroying the beehive and toad and leaving behind a blinker.
Hasslers
The I-heptomino sequence can be hassled in oscillators. Four examples are shown below. For all four, generation 4 is the pattern that the various predecessors in the I sequence typically converge to; this is done to show a variety of predecessors.
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Other uses
The I-heptomino sequence is a recognized conduit input and output, represented by the letter I.
See also
References
- ↑ AlbertArmStain (April 16, 2023). Re: Oscillator Discussion Thread (discussion thread) at the ConwayLife.com forums
External links
- I-heptomino at the Life Lexicon