DavidMartin's latest activity

That seems close in spirit to what I’m asking about — although in that framework the S relation itself is still taken as primitive. My...

Along these lines (assuming (3+1)-spacetime): "The causal order C determines the conformal structure of space-time, or nine of the ten...

This might be of interest: E. H. Kronheimer & R. Penrose (1967) "On the structure of causal spaces" Mathematical Proceedings of the...

In classical physics, the only "asymmetric" law, which contains an arrow of time, is the the second law of thermodynamics.

That’s a good point — in classical dynamics the second law is indeed the only fundamental time-asymmetric principle. My question is...

My question is slightly more “upstream”: are there approaches where causal order is derived from some underlying relational structure —...

Dear Jedi, Thank you for taking the time to read my paper and for your kind words — it truly means a lot coming from someone with your...

I’m trying to understand whether causal order itself might arise from more primitive relational asymmetry.

Thank you robphy, I have so much questions ... Malament’s result is particularly interesting — if I understand correctly, it shows that...

Thanks, that’s helpful. If I understand correctly, Robb’s “conical order” is essentially an order-theoretic notion of “before” and...

I'd have said SR itself fits the bill, at least if you follow Einstein's original postulates rather than starting by postulating...

I agree that in Einstein’s original formulation, causal structure is not postulated geometrically but follows from the Lorentz...

In most relativistic frameworks, time and causality are defined through an underlying spacetime metric with Lorentzian signature. I’m...

Hello, I’m an independent researcher with an interest in theoretical physics and information-based approaches to spacetime. I’ve...