67 citations · 219 across the 12 of their papers we have counts for
4 papers · 1 filter
Further properties of causal relationship: causal structure stability, new criteria for isocausality and counterexamples
Alfonso García-Parrado, Miguel Sánchez
Recently ({\em Class. Quant. Grav.} {\bf 20} 625-664) the concept of {\em causal mapping} between spacetimes --essentially equivalent in this context to the {\em chronological map}…
Bi-conformal vector fields and their applications
Alfonso García-Parrado, José M. M. Senovilla
We introduce the concept of bi-conformal transformation, as a generalization of conformal ones, by allowing two orthogonal parts of a manifold with metric $\G$ to be scaled by diff…
Causal symmetries
A. García-Parrado, J. M. M. Senovilla
We define a new type of transformation for Lorentzian manifolds characterized by mapping every causal future-directed vector onto a causal future-directed vector. The set of all su…
Causal Relations and their applications
Alfonso García-Parrado, José M. M. Senovilla
In this work we define and study the relations between Lorentzian Manifolds given by the diffeomorphisms which map causal future directed vectors onto causal future directed vector…