Life theorems
Posted: December 18th, 2017, 5:29 pm
What would you say are the top ten theorems of Life?
Has that actually been proven? Plus, aren't speeds equal to (M,N)/2(M+N) an open question in any case?simsim314 wrote:I would go with: there exist a spaceship of any valid speed and direction i.e. any speed slower than (M,N)/2(M+N).
I think your wording is ambiguous there. Certainly there exists a ship for any speed strictly slower than (M,N)/2(M+N) (and that is an amazing theorem!), but apart from c/2 and (1,1)c/4 we don't know whether any ships with exactly that speed exist.simsim314 wrote:I would go with: there exist a spaceship of any valid speed and direction i.e. any speed slower than (M,N)/2(M+N).
Good point. Interesting enough - no natural nor constructable ship with this property exists, or has been proven to exist.Macbi wrote:but apart from c/2 and (1,1)c/4 we don't know whether any ships with exactly that speed exist.
Proven yes, by a theoretical construction (actually I've found several ways to construct a universal ship). But no actual construction was made yet...A for awesome wrote:Has that actually been proven?
I thought it was proven that there were no p3 phoenices.Bullet51 wrote:#4. There are no period-3 phoenixes.
Exactly, this is why this is in the Theorems thread and not Unsolved Conjectures.AforAmpere wrote:I thought it was proven that there were no p3 phoenices.Bullet51 wrote:#4. There are no period-3 phoenixes.