PeterDonis's latest activity

Note that ##~\partial x^\alpha/\partial x'^{\mu'}~## is not a tensor. If you want to transform it to a third coordinate system, it...

This thread will remain closed since the OP is based on a fundamental misconception. Also, @pasulya, two points for future reference...

According to our best current model, yes. This is not part of our best current model. It's speculation (and it doesn't even apply to...

My apologies for using my mentor powers to post after closure, but I thought my experience might be worthwhile on this topic. First...

I would say, in short, tensors aren't matrices and don't follow the same rules. For example, ##g_{ab}x^ax^b## is a perfectly valid...

From SEP on Many-Worlds (written by Vaidman):

By "local" here is meant "free of action-at-a-distance", which, if you unpack further based on what's said in section 9 of the paper...

Bell on Bell’s theorem: The changing face of nonlocality Harvey R Brown, Christopher G Timpson https://arxiv.org/abs/1501.03521 So here...

Can you give any specific references?

After moderator review, this thread has been closed.

Why will this be the case?

Thanks, these are helpful.

Yes, and this is the relativity forum, not one of the math forums, so physics sloppiness wins out here. :cool:

I think @JimWhoKnew was assuming the presence of a metric, which gives you a natural mapping between the different vector spaces that...

Only in the presence of a metric, so that you can use it to freely raise and lower indexes. Otherwise those are three different...