24 citations · 111 across the 14 of their papers we have counts for
14 papers
Numerical treatment of interfaces for second-order wave equations
F. Parisi, M. Cécere, M. Iriondo +1
In this article we develop a numerical scheme to deal with interfaces between touching numerical grids when solving the second-order wave equation. We show that it is possible to i…
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…
On free evolution of self gravitating, spherically symmetric waves
Mirta S. Iriondo, Oscar A. Reula
We perform a numerical free evolution of a selfgravitating, spherically symmetric scalar field satisfying the wave equation. The evolution equations can be written in a very simple…
Null surfaces formulation in 3D
Diego M. Forni, Mirta Iriondo, Carlos N. Kozameh
The Null Surface Formulation of General Relativity is developed for 2+1 dimensional gravity. The geometrical meaning of the metricity condition is analyzed and two approaches to th…
Null Surfaces and the Bach Equations
Mirta Iriondo, Carlos N. Kozameh, Alejandra Rojas
It is shown that the integrability conditions that arise in the Null Surface Formulation (NSF) of general relativity (GR) impose a field equation on the local null surfaces which i…
Integrating Singular Functions on the Sphere
Alicia Dickenstein, Mirta Susana Iriondo, Teresita Alejandra Rojas
We obtain rigorous results concerning the evaluation of integrals on the two sphere using complex methods. It is shown that for regular as well as singular functions which admit po…