Difference between revisions of "OCA:DryLife"

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(ruleinteger, "taming" thread link)
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|b              = 37
 
|b              = 37
 
|s              = 23
 
|s              = 23
 +
|ruleinteger    = 6280
 
}}
 
}}
 
'''DryLife''' is a [[cellular automaton#Well-known Life-like cellular automata|Life-like cellular automaton]] in which [[cell]]s survive from one generation to the next if they have 2 or 3 [[neighbours]], and are born if they have 3 or 7 neighbours.
 
'''DryLife''' is a [[cellular automaton#Well-known Life-like cellular automata|Life-like cellular automaton]] in which [[cell]]s survive from one generation to the next if they have 2 or 3 [[neighbours]], and are born if they have 3 or 7 neighbours.
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==External links==
 
==External links==
 
{{LinkEppsteinRule|b37s23}}
 
{{LinkEppsteinRule|b37s23}}
 +
{{LinkForumThread|f=11|t=2705|title=Taming B37/S23}}

Revision as of 12:21, 18 February 2017

DryLife
DryLife rule
Rulestring 23/37
B37/S23
Rule integer 6280
Character Exploding

DryLife is a Life-like cellular automaton in which cells survive from one generation to the next if they have 2 or 3 neighbours, and are born if they have 3 or 7 neighbours.

Patterns

The "flower garden".

DryLife is so named because the standard spaceships from normal life; lightweight spaceship, middleweight spaceship, and heavyweight spaceship — also known as "fishes" — do not work, though the glider does. Some other spaceships, such as the weekender and loafer, work in this rule. The copperhead evolves into the closely related c/10 goldenhead, differing from copperhead by two cells in one phase.

Two correctly spaced B-heptominoes (as in the twin bees shuttle) act as a c/2 orthogonal puffer.

A new speed allowed by DryLife is 9c/28 orthogonal. Technology travelling at this speed relies on the R-pentomino. There is a small 9c/28 orthogonal pond puffer, and a 9c/28 spaceship. Guns and breeders have been constructed that fire spaceships and rakes of this speed respectively.

The "flower garden", a common constellation which evolves from honey farm predecessors, composed of two bi-boats and two cis-mirrored R-bees, is shown to the right.

Universality

There is a proof sketch of this rule's universality. It is on conwaylife forums[1], which contains a proof-scheme covering all rules that support glider and their rulestring matches B3[678]*/S23[678]*.

References

External links