ConwayLife.com

I had an idea for automatically building objects with LLS. First, I generate or find a working section of a partial. Then I feed into LLS a searchfile to expand that partial. If it returns UNSAT, go back. Repeat until it finds a complete object with the required properties. Here are some details fo...

Sorry for my noobiness at spaceship searches (I don't use search programs other than apgsearch), by why are spaceship searches done by width? It means you can treat spaceships as lists of rows satisfying certain 'local rules' (in the case of the (2, 1)c/6 search, each of these rules only mentions 7...

(I sure wish Catagolue/Shinjuku had an audit trail so that "whatever was there before" is visible. Sometimes that's useful information, which is why it's so helpful that Mark Niemiec's database keeps multiple recipes.) (While I'm wishing, naturally the audit trail should include who uploaded what w...

lack of stator I didn't even think about that. This is the first strictly volatile p16. Also, it seems to merely be bad luck (rather than necessity) that it doesn't glide-reflect instead of staying in the same place. If it moved one cell each half-period, it would have been hilarious (front-running...

A for Awesome noticed that rliston's G1 searching turned up something new today: this new p16 oscillator. It breaks both the minimum population and bounding box records for a p16 oscillator. It has a few weak sparks, so it will probably give some smaller LCM oscillators, although I'm not sure if it...

Can a p4 with one cell period 4 rotor exist? Not in any two-state rule. If there's only one cell changing, and it can only be either 0 or 1, then there's no way you're getting above a P2. You need at least two changing cells to hold enough information to get to p4. (Am I answering the right questio...

muzik wrote: ↑

February 10th, 2020, 2:02 pm

I want a page that combines the results of C1 and G1. There's been important discoveries in each of them recently and I kind of want an overview.

Is it okay if it's infrequently updated (say, every 24 hours or so) by automatically combining the C1 and G1 censuses?

Citation needed for your last paragraph: a pair of 2ECs has 96 different relative phase combinations, compared with only 6 for a pair of Sir Robins, so I'd have guessed 2ECs would have more distinct collisions.

x = 79, y = 143, rule = B3/S23 43bo$42bo$42b3o23$10bobo$10bo3bo$14bo$10bo4bo$14bo$10bo3bo$10bobo2$3bo $b2ob2o$17b2obob2o$o5bo$17bo5bo$2obob2o$18b2ob2o$20bo2$11bobo$9bo3bo$ 9bo$8bo4bo$9bo$9bo3bo$11bobo2$20bo$18b2ob2o2$17bo5bo2$17b2obob2o4$20bo $19bobo$12bobo4bobo$12bo3bo3bo$6b2o8bo$5bo2bo3bo4bo$6b2o...

Hmm, that's surprisingly accurate. An animal cell is about 20um in diameter, so a cluster of 10^6 cells should be around 2 mm. Eleven of those would yield something about 22mm long and 2mm in diameter, which is consistent with a small caterpillar. In fact, there are almost certainly real-life caterp...

Are transfer.py runs still happening regularly, or no? The last one was on December 15th by Alex Greason. However, now really wouldn't be a good time to run it because it looks like the job process is stuck indefinitely: https://gitlab.com/apgoucher/catagolue/-/jobs Anything submitted to the queue ...

Noticed this morning that the navigation links at the bottom of multi-page lists of things are half broken. The links at the top for a page like this Displaying 201 to 400 of 1896 objects ( prev 200 | next 200 ) -- but at the bottom of the page it says that the list stops wherever the current page ...

Here's a modification of the final step in the 340-glider synthesis which allows for the construction of a pre-pulsar spaceship: x = 185, y = 265, rule = B3/S23 98bo$99bo$99bo$96bo2bo$97b3o68$181bo$181bobo$181b2o$176bo$176bobo$176b 2o$12bo$13b2o$8bo3b2o160bo$9bo164bobo$7b3o164b2o8$10bobo$11b2o$11bo ...

IS THERE A VIEWER TO RLE CONVERTER? Press Ctrl+C while in the viewer. (This took me an embarrassingly long time to figure out, but to be fair it's not advertised, like, anywhere.) Even less well-advertised is that Ctrl+S (after editing) rewrites the DOM element of the webpage containing the RLE wit...

I've modified Catagolue in commit d48d48ba to do the sensible thing. This census should now accumulate 100 new hauls per hour until the queue is exhausted:

https://gol.hatsya.co.uk/census/b2c3aei ... jkq6c7c/C1

Wait, so it doesn't commit old, uncommitted hauls? That is a problem by itself... It's subtler than that. Currently, the situation is: Whenever a haul is uploaded to a census, a flag is set to indicate that there are uncommitted hauls; Whenever apgcron runs on a census, up to N (dependent on the ce...

Okay, and the committed haul count is rising, too. I will continue uploading tomorrow. I hope I haven't broken any quota limits There aren't any per-user quota limits. When the daily overall limit is exceeded, Catagolue goes down until midnight Pacific Time. All recent versions of apgsearch cope re...

I've only uploaded 2000. Why are so many not getting committed? After each 20 minute update, no hauls from the queue are getting emptied. https://gol.hatsya.co.uk/haul/b2c3aei4ajnr5acns2-ci3-ck4in5jkq6c7c/C1?committed=0 There's a mixture of brown and green ones here, so it seems to be working: http...

It may have been a few days ago, but we just passed five hundred trillion objects uploaded to b3s23/c1. 8) It was in fact today or yesterday; it's at 500,180,980,549,780 as I write this, and we've been consistently getting over 600B objects per day for a while. Wow... suddenly the target of 10^15 o...

This isn't particularly the point, but a two-queen-bee oscillator has indeed shown up, "Berger's p30". In fact, a second instance of it appeared recently. http://gol.hatsya.co.uk/object/xp30_w33z8kqrqk8zzy3gggozy27ddfoy0cx33/b3s23 Thanks -- that really does seem fairly relevant! Sorry, I had forgot...

This is all consistent with Catagolue currently reporting 382. Well done!

All seven variants of P10 TL/Beethoven hassler: ... The left/right blocks can be made more cheaply: x = 56, y = 21, rule = B3/S23 6bo$4boo$5boo3$bo$bbo$3o33boo16boo$36boo16boo$3bo23bobo$3boo22boo$bbob o23bo$36boo16boo$29b3o4boo16boo$29bo$30bo3$25boo$26boo$25bo! That's because I don't know that thes...

Is there a universal 2-lane monophase slow-salvo toolkit?

I think that should admit a stator reduction.

I think you've discovered Popper's paradox of tolerance.