ConwayLife.com - A community for Conway's Game of Life and related cellular automata
Home  •  LifeWiki  •  Forums  •  Download Golly

Fano database

For general discussion about Conway's Game of Life.

Fano database

Postby Hdjensofjfnen » March 4th, 2019, 1:55 am

The Fano database of gliders is in desperate need of updating. There is this 13-cell c/3o, the "cicada", in B3/S01367, that isn't in it.
x = 7, y = 9, rule = B3/S01367
3bo$3bo$bo$bo2b3o2$3o2$b2o$2bo!
Life is hard. Deal with it.
My favorite oscillator of all time:
x = 7, y = 5, rule = B3/S2-i3-y4i
4b3o$6bo$o3b3o$2o$bo!
User avatar
Hdjensofjfnen
 
Posts: 1085
Joined: March 15th, 2016, 6:41 pm
Location: r cis θ

Re: Fano database

Postby 77topaz » March 4th, 2019, 6:58 am

That's far from the only example. The B3/S23 page, for example, doesn't list the loafer or the copperhead. The Fano site hasn't been updated in at least several years, and I think the creator David Eppstein either isn't working with CA anymore or hasn't been contactable by anyone (?).
User avatar
77topaz
 
Posts: 1345
Joined: January 12th, 2018, 9:19 pm

Re: Fano database

Postby Hdjensofjfnen » March 6th, 2019, 1:42 am

77topaz wrote:I think the creator David Eppstein either isn't working with CA anymore or hasn't been contactable by anyone (?).

I can contact him via Wikipedia.
Life is hard. Deal with it.
My favorite oscillator of all time:
x = 7, y = 5, rule = B3/S2-i3-y4i
4b3o$6bo$o3b3o$2o$bo!
User avatar
Hdjensofjfnen
 
Posts: 1085
Joined: March 15th, 2016, 6:41 pm
Location: r cis θ

Re: Fano database

Postby wildmyron » March 6th, 2019, 3:57 am

Or you could contact him directly: https://www.ics.uci.edu/~eppstein/contact.html

Apparently he still thinks about CA now and then, e.g. https://11011110.github.io/blog/2018/12 ... ntual.html

As far as the glider database goes I don't think that's been updated in quite some time. There are two relevant threads on this board if you are interested in known results:
viewtopic.php?f=11&t=1787
viewtopic.php?f=11&t=1074

For the specific rule you mentioned there is already a c/3 known in that rule. Please note comments from the glider db:
gliders.db wrote:# There are far too many gliders known even just in life to just list
# them all (in fact, there are usually infinitely many types of gliders
# whenever there is any). The primary reason for including a glider in
# this list is to cover every known combination of speed and rules.
# Secondarily, I am also including particularly small gliders, or
# gliders that work unchanged in many different rules.
The latest version of the 5S Project contains over 47,000 spaceships. Tabulated pages up to period 160 are available on the LifeWiki.
wildmyron
 
Posts: 1109
Joined: August 9th, 2013, 12:45 am

Re: Fano database

Postby Moosey » March 6th, 2019, 9:12 am

Would it be possible to add nontotalistic rules to the database?
I guess that would be far too much.
My rules:
They can be found here

Also, the tree game
Bill Watterson once wrote: "How do soldiers killing each other solve the world's problems?"
User avatar
Moosey
 
Posts: 1469
Joined: January 27th, 2019, 5:54 pm
Location: A house, or perhaps the OCA board.

Re: Fano database

Postby AforAmpere » March 6th, 2019, 12:08 pm

Moosey wrote:Would it be possible to add nontotalistic rules to the database?
I guess that would be far too much.

I had been working on a user-editable NT glider database, but nobody wanted to add to it. The discussion is here.
Things to work on:
- Find a (7,1)c/8 ship in a Non-totalistic rule (someone please search the rules)
- Find a C/10 in JustFriends
- Find a C/10 in Day and Night
AforAmpere
 
Posts: 997
Joined: July 1st, 2016, 3:58 pm


Return to General Discussion

Who is online

Users browsing this forum: No registered users and 4 guests