Generalization of the concept of "spaceship"

For general discussion about Conway's Game of Life.
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hpstricker
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Generalization of the concept of "spaceship"

Post by hpstricker » April 27th, 2014, 9:18 am

Is there - conceptually - something beyond spaceships?

- A still-life is an oscillator with period 1.
- An oscillator is a spaceship with velocity 0.
- A spaceship is an X with Y Z.

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Mats
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Re: Generalization of the concept of "spaceship"

Post by Mats » April 27th, 2014, 12:23 pm

Like this?

- A spaceship is a puffer with no smoke.

hpstricker
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Re: Generalization of the concept of "spaceship"

Post by hpstricker » April 27th, 2014, 4:30 pm

That's funny, but to be honest: not exactly what I was looking for, immediately. But I have to think about it for a while.

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Tropylium
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Re: Generalization of the concept of "spaceship"

Post by Tropylium » May 11th, 2014, 12:30 pm

- A spaceship is a replicator with 1 offspring per cycle?

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simsim314
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Re: Generalization of the concept of "spaceship"

Post by simsim314 » May 11th, 2014, 12:40 pm

Single living cell is universal constructor.

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dvgrn
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Re: Generalization of the concept of "spaceship"

Post by dvgrn » May 11th, 2014, 3:08 pm

- A spaceship is a glider rake with 0 gliders per cycle...

I do like the much more ambitious claim for spaceships to be replicators -- but doesn't that mean oscillators are also replicators? Replicators don't really have to move themselves, they just have to send out copies -- just ask any tree.

itaibn
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Re: Generalization of the concept of "spaceship"

Post by itaibn » May 18th, 2014, 6:02 pm

Along the same lines as the puffer example, but more outrageous:

- A spaceship is an wickstretcher for the completely blank wick.

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Tropylium
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Re: Generalization of the concept of "spaceship"

Post by Tropylium » May 21st, 2014, 7:46 pm

dvgrn wrote:I do like the much more ambitious claim for spaceships to be replicators -- but doesn't that mean oscillators are also replicators? Replicators don't really have to move themselves, they just have to send out copies -- just ask any tree.
But of course. We just established in OP that oscillators are spaceships. :P

Another not-so-serious version: A spaceship is a gun with no engine and infinite period

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