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- Path: sparky!uunet!paladin.american.edu!darwin.sura.net!convex!bcm!aio!shirley
- From: shirley@fdr.jsc.nasa.gov (Bill Shirley [CSC])
- Newsgroups: comp.theory.cell-automata
- Subject: Re: Two questions to life stochastics
- Message-ID: <1992Sep15.153057@fdr.jsc.nasa.gov>
- Date: 15 Sep 1992 20:30:57 GMT
- References: <1992Sep15.153716.10856@unibi.uni-bielefeld.de>
- Sender: shirley@fdr (Bill Shirley [CSC])
- Organization: Software Technology Branch - NASA/JSC
- Lines: 54
- Originator: shirley@fdr
-
-
- In article <1992Sep15.153716.10856@unibi.uni-bielefeld.de>, achim@unibi.uni-bielefeld.de (Achim Flammenkamp) writes:
- > I have two questions concerning the behaviour or random seeded life areas:
- >
- > 1) Assume you have an NxN area seeded with some fixed probability per cell
- > (e.g. 1/3) to alive/death status. There exists the average waiting time T
- > depending on N that the area reaches its "balance configuration". My
- > question is: Does limit T(N) exists if N tends to infinity ? (I think no,
- > but I see no simple argument for my conjecture).
-
- How do you define "balance configuration"?
-
- Stable? i.e. B(T) = B(T+1) (where B(N) = Board at time N)
- Cyclic? i.e. B(T) = B(T+c) c>1
- if the board can be broken into non-interinfluencing regions,
- R1 to Rn, that are all cyclic then the board is cyclic.
- c = c(R1) * c(R2) *...* c(Rn)
-
- or
-
- does "balance configuration" allow moving creatures?
-
- do the moving creatures "fall off" the end of the board
- (to make the board fall into a category above)
- or do they continue infinitely?
- asked differently
- is the seed NxN or is the board NxN?
-
- on an NxN board, where N is finite, it, of corse, must settle into a cycle.
-
-
- So,
- If the board and the seed are infinite, does one escaped glider (can
- it escape on an infinely seeded board?) make it "unbalanced"?
-
-
- > 2) Assume you randomly initialize with fixed probability per cell (e.g. 1/3) a
- > large area. Compare this configuration with the same but changed one cell.
- > Now run both configurations until they reach their "balance configuration".
- > How big is the average area on which these two "balance configurations"
- > differ ? (I think it exists and maybe contain about some million cells).
-
- I don't think there is a limit to the size.
- There may be an average size.
-
- what if you "randomly" created an very large fuse?
-
- >
- > achim
-
- curious bill
- --
- Bill Shirley | ``Computer Science is not about computers any
- shirley@fdr.jsc.nasa.gov| more than astronomy is about telescopes.''
-