Unique father problem: Difference between revisions
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as of April 2020 → as of January 2022; mentioning infinite pattern |
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:''Is there a stable configuration whose only father is itself (with some fading junk some distance away not being counted)? | :''Is there a stable configuration whose only father is itself (with some fading junk some distance away not being counted)? | ||
The problem | The problem has been answered positively by Ilkka Törmä, with a 26x32 still-life. | ||
==Also see== | ==Also see== | ||
Revision as of 22:49, 13 January 2022
| Unique father problem | ||
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| Pattern type | Problem | |
|---|---|---|
| Static symmetry | Unspecified | |
| Discovered by | Unknown | |
| Year of discovery | Unknown | |
The unique father problem is the following question, posed by John Conway in 1972 in Lifeline Volume 6 with an associated $50 cash prize,[1] along with the grandfather problem:
- Is there a stable configuration whose only father is itself (with some fading junk some distance away not being counted)?
The problem has been answered positively by Ilkka Törmä, with a 26x32 still-life.
Also see
References
- ↑ Robert Wainwright (October 1972). Lifeline, vol 6, p. 1.
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