PeterDonis's latest activity

Yeah, but if you are talking about galaxies, you are outside the FLRW idealized model - that has only perfect fluid with different...

That doesn't prove that his model is correct. Until the model makes predictions that are different from other models, and experiments...

"Space" isn't an invariant. It varies in spacetime. Whether that means variation in "space" depends on your choice of coordinates...

If you have an editor where you can highlight a set of lines of code and indent or dedent them all at once, it makes it a lot easier...

Just to give a different viewpoint, my experience has been the opposite. After I had been programming in Python for some years, I found...

If you keep reading through the link you've posted you'll see that you're defining ##A^{\dagger}## wrong. ##A^{\dagger} = KL^{\dagger}##...

It's straightforward to write down the model; indeed doing that is an exercise in some advanced GR textbooks. The usual way is to use a...

Because a constant is the simplest model, and we have no evidence that it's not constant, so we use the simplest model that's consistent...

Ok, good. I'll try to keep that in mind for the future.

Here is what I said: Note the bolded text, which is crucial.

You did as far as mathematical theorems are concerned. None of your references use the term that way. They all use the term as a way of...

A Python list is not a linked list; the internal implementation at the C level is an array of pointers to the objects in the list...

You're getting way too caught up in meaningless terminology. "Purely classical" and "semi-classical" regarding theorems are just terms...

Given what you seem to mean by "purely classical", no, it isn't a "purely classical" theorem. Yes, for the reasons I already gave in...

The "algorithm" here is very simple and looks linear in the size of the list--but actually you are running two linear algorithms--one to...