## apgsearch and Non-Totalistic Rules

For scripts to aid with computation or simulation in cellular automata.
Hdjensofjfnen
Posts: 1516
Joined: March 15th, 2016, 6:41 pm
Location: r cis θ

### apgsearch and Non-Totalistic Rules

For some reason, my version of apgsearch (v1.1) won't search non-totalistic rules.
"A man said to the universe:
'Sir, I exist!'
'However,' replied the universe,
'The fact has not created in me
A sense of obligation.'" -Stephen Crane

Code: Select all

x = 7, y = 5, rule = B3/S2-i3-y4i
4b3o$6bo$o3b3o$2o$bo!


dvgrn
Moderator
Posts: 6725
Joined: May 17th, 2009, 11:00 pm
Contact:

### Re: apgsearch and Non-Totalistic Rules

Yes, isotropic rules aren't supported in out-of-the-box apgsearch -- you have to be willing to dig around on the Hacking apgsearch thread. Or possibly elsewhere, if my information is out of date.

(Which it might well be. I have enough trouble with plain old ordinary Life, and have seldom dared to set foot in the vast multiverse of isotropic rules.)

This question came up a few months ago, I believe: there was some rumor of a v(0.54+0.22i), but there doesn't seem to be a release by that name yet. Can someone give a more authoritative summary of the current cutting edge of isotropic rule searching?

A for awesome
Posts: 2043
Joined: September 13th, 2014, 5:36 pm
Location: 0x-1
Contact:

### Re: apgsearch and Non-Totalistic Rules

dvgrn wrote:This question came up a few months ago, I believe: there was some rumor of a v(0.54+0.22i), but there doesn't seem to be a release by that name yet. Can someone give a more authoritative summary of the current cutting edge of isotropic rule searching?
An update: I hope to have 0.22i done within two months, because I just finally received a new Mac with OS X Sierra installed. It should hopefully be easier to use and contain bugfixes, with more (somewhat minor) features; I hope to eventually modify it to take fuller advantage of Golly 2.8's capabilities and optimize for speed, as well as improving support for rules with common infinite growth, but that would be some time in the future.
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