3 papers
gr-qc2024
On the conformal group of a globally hyperbolic spacetime
Ali Bleybel
We study causal and conformal automorphism groups of globally hyperbolic spacetimes using an order-theoretic back-and-forth method on dense countable subsets. In two dimensions we…
gr-qc2021
A new proof of Geroch's theorem on temporal splitting of globally hyperbolic spacetimes
Ali Bleybel
In this paper, we use our results concerning temporal foliations of causal sets in order to provide a new proof of Geroch's Theorem on temporal foliations in a globally hyperbolic…
math.LO2018
A Note on complex -adic exponential fields
Ali Bleybel
In this paper we apply Ax-Schanuel's Theorem to the ultraproduct of -adic fields in order to get some results towards algebraic independence of -adic exponentials for almost…