By using a so-called extended double (ED)-complex method, the previously found
doubleness symmetry for each member of the class of general symplectic gravity models is …

We further study the two-dimensional reduced Einstein–Kalb–Ramond (EKR) theory in the
axisymmetric case by using the so-called double-complex function method. We find a …

String Theory in México Page 1 String Theory in México Hugo García-Compeán ∗,† and
Alberto Güijosa ∗∗ ∗ Centro de Investigación y de Estudios Avanzados del IPN, Unidad …

The symmetry structures of the general symplectic gravity model are further studied. By
using the so-called extended double (ED)-complex function method, the usual Riemann …

Considering models with extra dimensions have introduced completely new ways of looking
up on old problems in theoretical physics, and conversely, it has also introduced new …

The symmetry structures of stationary axisymmetric Einstein–Maxwell-Dilaton–Axion
(EMDA) theory are further studied. By using the so-called extended double (ED)-complex …

An Ernst-like 4× 4 matrix complex potential is introduced and the motion equations of the
stationary axisymmetric Einstein–Maxwell–dilaton–axion (EMDA) theory are written as a so …