4 papers · 1 filter
Cartan's equivalence method and null coframes in General Relativity
Emanuel Gallo, Mirta Iriondo, Carlos Kozameh
Using Cartan's equivalence method for point transformations we obtain from first principles the conformal geometry associated with third order ODEs and a special class of PDEs in t…
A comment on gr-qc/9901053
Mirta S. Iriondo, Enzo O. Leguizamon, Oscar A. Reula
In eprint gr-qc/9901053 Gen Yoneda and Hisa-aki Shinkai have made several claims disputing our results in gr-qc/9710004, and gr-qc/9804019. We show here that these claims are not c…
Existence of Constant Mean Curvature Hypersurfaces in Asymptotically Flat Spacetimes
Lars Andersson, Mirta S. Iriondo
The problem of existence of spacelike hypersurfaces with constant mean curvature in asymptotically flat spacetimes is considered for a class of asymptotically Schwarzschild spaceti…
The Newtonian Limit on Asymptotically Null Foliations
Mirta S. Iriondo, Enzo O. Leguizamón, Oscar A. Reula
By suitably re-scaling the conformal Einstein's equations we are able to apply recent results in the theory of PDE, and prove that they possess slow solutions in a future neighborh…