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

Can confirm Fewest cell glide gun?

For discussion of specific patterns or specific families of patterns, both newly-discovered and well-known.

Can confirm Fewest cell glide gun?

Postby Alberto Neri » July 29th, 2019, 7:10 pm

Hi:

Can you confirm if this pattern is the fewer cell glide gun in terms of initial cells?

Thanks in andvance.

# Neri Glider Gun (p120).
# 31 cell population at start.
# Discovered in june 26, 2019 by P. Alberto Neri.
# Based in Simkin glider gun.
x = 20, y = 33, rule = B3/S23
18b2o$18bo3$15b2o$16bo2$18bo$18b2o4$7b3o$8bo$8b3o10$2o6bo$o6b2o$bo$2o
8b2o$10bo3$7b2o$8bo!
Attachments
Neri Glider Gun.rle
(265 Bytes) Downloaded 59 times
Alberto Neri
 
Posts: 1
Joined: July 26th, 2019, 4:16 pm

Re: Can confirm Fewest cell glide gun?

Postby Ian07 » July 29th, 2019, 7:33 pm

Unfortunately I'm pretty sure this doesn't count since it's only a predecessor to the gun. If I'm not mistaken, the minimum population is the lowest that infinitely occurs if the gliders are excluded from the population count, which is why the minimum population for single-barrel guns is still listed as 36 cells on the wiki.

EDIT: P.S. if you enclose the RLE in code blocks (as shown below) you can add a "show in viewer" option to the post which shows the pattern using a custom web plugin:
# Neri Glider Gun (p120).
# 31 cell population at start.
# Discovered in june 26, 2019 by P. Alberto Neri.
# Based in Simkin glider gun.
x = 20, y = 33, rule = B3/S23
18b2o$18bo3$15b2o$16bo2$18bo$18b2o4$7b3o$8bo$8b3o10$2o6bo$o6b2o$bo$2o
8b2o$10bo3$7b2o$8bo!
Ian07
 
Posts: 306
Joined: September 22nd, 2018, 8:48 am

Re: Can confirm Fewest cell glide gun?

Postby Jormungant » July 30th, 2019, 6:53 pm

Droping the bomb:

x = 20, y = 33, rule = LifeHistory
18.2A$18.A3$15.2A$16.A2$18.A$18.2A12$8.A$7.3A$6.2A.A2$2A$A$.A$2A8.2A$
10.A3$7.2A$8.A!


But it is a predecesor, I managed to get the B and one block with 3 gliders (some file somewhere), so I do not know what is the lowest glider construction for this oscillator/gun.
Jormungant
 
Posts: 102
Joined: May 27th, 2016, 1:01 am

Re: Can confirm Fewest cell glide gun?

Postby A for awesome » July 30th, 2019, 7:05 pm

Jormungant wrote:Droping the bomb:

x = 20, y = 33, rule = LifeHistory
18.2A$18.A3$15.2A$16.A2$18.A$18.2A12$8.A$7.3A$6.2A.A2$2A$A$.A$2A8.2A$
10.A3$7.2A$8.A!


But it is a predecesor, I managed to get the B and one block with 3 gliders (some file somewhere), so I do not know what is the lowest glider construction for this oscillator/gun.


This is probably the smallest predecessor of this gun or any known gun (21 cells):
x = 14, y = 33, rule = B3/S23
12b2o$12bo3$9b2o$10bo2$12bo$12b2o13$b3o$bo2bo$o4$4b2o$4bo3$b2o$2bo!
x₁=ηx
V ⃰_η=c²√(Λη)
K=(Λu²)/2
Pₐ=1−1/(∫^∞_t₀(p(t)ˡ⁽ᵗ⁾)dt)

$$x_1=\eta x$$
$$V^*_\eta=c^2\sqrt{\Lambda\eta}$$
$$K=\frac{\Lambda u^2}2$$
$$P_a=1-\frac1{\int^\infty_{t_0}p(t)^{l(t)}dt}$$

http://conwaylife.com/wiki/A_for_all

Aidan F. Pierce
User avatar
A for awesome
 
Posts: 1876
Joined: September 13th, 2014, 5:36 pm
Location: 0x-1

Re: Can confirm Fewest cell glide gun?

Postby Sokwe » July 30th, 2019, 7:38 pm

A for awesome wrote:This is probably the smallest predecessor of this gun or any known gun

Might as well reduce the bounding box without affecting the population:
x = 13, y = 33, rule = B3/S23
11b2o$11bo3$8b2o$9bo2$11bo$11b2o13$3o$o2bo$o4$3b2o$3bo3$2o$bo!
-Matthias Merzenich
Sokwe
Moderator
 
Posts: 1480
Joined: July 9th, 2009, 2:44 pm


Return to Patterns

Who is online

Users browsing this forum: No registered users and 6 guests