Skip to main content
Search type Search syntax
Tags [tag]
Exact "words here"
Author user:1234
user:me (yours)
Score score:3 (3+)
score:0 (none)
Answers answers:3 (3+)
answers:0 (none)
isaccepted:yes
hasaccepted:no
inquestion:1234
Views views:250
Code code:"if (foo != bar)"
Sections title:apples
body:"apples oranges"
URL url:"*.example.com"
Saves in:saves
Status closed:yes
duplicate:no
migrated:no
wiki:no
Types is:question
is:answer
Exclude -[tag]
-apples
For more details on advanced search visit our help page
Results tagged with
Search options not deleted user 7742
1 vote

Local rule for the product of two cellular automata

Assuming that my edits to your question indeed reflect your intent correctly, the answer seems simple (and, indeed, was basically already sketched by Ville Salo in a comment above). First, let's assum …
Ilmari Karonen's user avatar
3 votes

Why do some linear cellular automata over $Z_{2}$ on the torus have small order?

Since nobody's posted a full answer yet, let me, for the record, provide my partial answer below. I originally started writing this draft confident that I had the answer, since I was quite familiar w …
Ilmari Karonen's user avatar
27 votes

Does Conway's game of life admit a notion of energy?

Conserved quantities like energy are characteristic of time-reversible dynamical systems. Conway's Game of Life is a dissipative, non-time-reversible system, and thus not likely to have any nontrivia …
Ilmari Karonen's user avatar
32 votes
Accepted

The 1-step vanishing polyplets on Conway's game of life

Here are two more vanishing 12-plets similar to yours: $$ \substack{ \displaystyle{◻◻◼◻◻◻} \cr \displaystyle{◻◻◻◼◻◻} \cr \displaystyle{◻◻◼◼◼◼} \cr \displaystyle{◼◼◼◼◻◻} \cr \displaystyle{◻◻◼◻◻◻} \cr …
Ilmari Karonen's user avatar
3 votes

Probabilistic 2D cellular automata with memory lifetime increasing like $e^{L^2}$

Intuitively, I would expect a $e^{-L^2}$ scaling, since flipping from all-$0$ to all-$1$ means having a temporal domain wall in spacetime, which requires $O(L^2)$ local faults if every cluster of err …
Ilmari Karonen's user avatar