Recent content by Almighty BOB

A teacher friend of mine once said "a good teacher is not someone who can explain, a good teacher is someone who can explain TO THE PEOPLE AT THE BACK.". :-) :-) :-) Edit... he also used to say "Hey ho, we're bounded below..."

That's a hell of a long-winded way to say 'yes'. :-) :-) :-)

I think you should stop reading Wikipedias, and start listening to the Prof. :-)

Is Professor Neumaier still active on these forums? I'm sure he could critique Gibbs' work. The professor is a maths genius, from what I've heard.

Thanks Bill, I've read the Baez page now - yeah, what you just wrote makes perfect sense :-) Catch you later!

You should tell my tailor that. Two left hands. At least he's cheap. Still reading Baez, but what I'm currently getting is that there is no problem with the derivation of conserved energy with respect to any given choice of time translation. It's conserved from any specific frame of reference...

So you don't think a rigorous mathematical proof answers the question? Or you're saying there's simply no empirical evidence one way or the other? (asking for a friend :-) )

The question then would appear to be why other cosmologists don't seem prepared to accept this? Is it simply a case of arguing over definitions? Or have I (as usual) missed something important?

That's fascinating - ! should have paid more attention in math class! Dang!

Thanks Bill. Do you mind if I pass it on to Dr Gibbs? Maybe he would like to sign up to the forum and put his side...

Thanks bhobba - have already had a look at that. Dr Gibbs' piece, however, claims to have done away with the need for pseudotensors; In other words he says he has shown mathematically that energy is conserved regardless of the size of the bit of spacetime you're looking at, and regardless of the...

I'm curious to know whether anyone with good maths has anything to say about Dr Philip Gibbs' covariant formula for conserved currents of energy, momentum and angular- momentum derived from a general form of Noether’s theorem? I'm not a pro mathematician, but it looks relatively robust to me...