Genady

You are given four pieces of chain shown on the left, and you want to make a circular chain shown on the right. What is a minimum number of links you need to cut to do the job?

It cannot be a proper length because proper length has a meaning only between events which are spacelike related, i.e., nothing can get from one to another unless it moves faster than light.

Are you familiar with the Deviant Art community? I think you'd find many friends there: DeviantArt - The Largest Online Art Gallery and Community E.g., see this: Search 'space art' on DeviantArt - Discover The Largest Online Art Gallery and Community Or this: Search 'sci-fi art' on DeviantArt - Discover The Largest Online Art Gallery and Community

Yes. +1. Unfortunately, the system shows it in the preview in spite of it being hidden. @Admin&Moderator, isn't it a bug? Can it be fixed?

Still doesn't work. If the body went 1 km in 1 s, the length of the geodesic is sqrt(300000^2-1) and divided by the coordinate time it gives the "speed" of about 300000 km/s.

See this computer simulation of the collision:

This is incorrect because length of a geodesic path is proper time. So, your formula produces time over time rather than speed. For example, if two events occur in the same place with 1 min one after another, the length of the geodesic path is 1 min and the "speed" according to your formula is 1/1 = 1.

With one cut / line, not necessarily straight, divide this figure into two identical parts:

Hi, It was informative and helpful. Thank you.

I've noticed that the expressions for single Dirac field, chiral projection operators, and single complex scalar field have typos.

Yes.

Yes, they have found another way.

Yes. +1

They get a lot from food.

A capital letter has been cut from a sheet of paper and given a single fold: What letter is it? It could be, but is not an L.

Yes, in about 8 years. Nice, but would be more important for a younger person. This is a consideration. Maybe I should just buy batteries and keep them charged from the grid?

I wish. Maybe when I grow up... The glockenspiel is a good accompaniment to the song playing in my head.

OK! Do you want to try the same problem but with three bugs in the corners of equilateral triangle? Six bugs in the corners of equilateral hexagon? Just for practice

Learning to play (a simplified version of) it on my glockenspiel.

Spiraling like this:

Only from reading technical literature and from playing with it online. I've retired before DNN was invented. Here is a basic description of its mathematical structure: At least that goal of AI has been achieved.

Yes, it is very easily confused.

IMO, it's just a run, calculation of the function for the question as an input. When the same question is asked again in the same session, its previous answer marked as 'not good' is added to the input, and the function is calculated again. And so on. If you start a new session and ask the same question, a different subset of the function is calculated for the same initial input as in the other session.

I don't think so. I think that it never calculates the full DNN function (too big), but rather each time a random subset of it.