Relativity and gravitation: classical and quantum. Proceedings of the 7th Latin American Symposium (SILARG VII) held in Cocoyoc, Mexico, December 2--8, 1990 (Q2753368)

The articles of this volume will not be indexed individually. The preceding symposium (6th, 1988) has been reviewed (see Zbl 0644.00017).NEWLINENEWLINENEWLINEThe sixty-two papers in this collection include the following: Abhay Ashtekar, Canonical quantum gravity (2-32); B. L. Hu, Coarse-graining and backreaction in inflationary and minisuperspace cosmology (33-73); R. Jackiw, Five lectures on planar gravity (74-97); Richard A. Matzner, Numerical relativity (98-141); Niall O Murchadha, The Yamabe Constant (142-149); Rafael D. Sorkin, Spacetime and causal sets (150-173); R. Bautista, J. Mucino, E. Nahmad-Achar and M. Rosenbaum, On the classification of group-invariant connections (176-181); Pedro W. Lamberti and Carlos N. Kozameh, Nonlocal variables in general relativity (182-188); Jorge Pullin, Time and chaos in general relativity (189-197); Peter C. Aichelburg, Lightlike contractions -- singular limits of spacetimes (198-203);NEWLINENEWLINENEWLINEM. Socolovsky, Ghost fields in principal bundles (204-210); O. A. Sanchez Valenzuela, Superalgebras of Duffin-Kemmer type (211-215); Alberto Mendoza, Superholomorphic structures, moment maps and super self-dual Yang Mills connections over super Riemann surfaces (216-219); Waldyr A. Rodrigues jun. and Quintino A. G. de Souza, A Clifford bundle approach to gravitational theory (220-226); M. Lledo and A. Restuccia, Canonical formalism, the initial value problem and the maximum principle (227-232); Carlos A. Lopez, A class of interior solutions of the Kerr-Newman field (234-240); Jose P. S. Lemos, On naked singularities in self-similar Tolman-Bondi spacetimes (241-247); Roberto A. Sussman, Thermodynamics of spacetimes admitting a conformal symmetry parallel to the \(4\)-velocity (248-252); Sergio A. Hojman and Dario Nunez, On the existence of affine collineations (253-258); A. Melfo, L. Nunez, U. Percoco and V. M. Villalba, Collineations in Gödel-type space-times (259-263). Marcelo Araujo, Tevian Dray and James E. F. Skea, Determining isometries of space-times using computer algebra (264-270); Luis P. Chimento and Norberto A. Zuccala, New solutions of the semiclassical Einstein equations (271-277); Andres D. Dagotto, Reinaldo J. Gleiser and Carlos O. Nicasio, Time shifts and nonlinear interference in cylindrically symmetric Einstein-Maxwell solitons (280-286); Hernando Quevedo and Bahram Mashhoon, Cylindrically symmetric gravitational waves with rotational properties (287-293); Jorge Cervantes-Cota, Pablo Chauvet and Jaime Klapp, Polytropic gravitational wave production cosmological model (294-300);NEWLINENEWLINENEWLINEOscar A. Reula, Victor H. Hamity and Simonetta Frittelli, Galilean limit of electrodynamics (301-307); Victor H. Hamity and Oscar Reula, The Newtonian limit of electromagnetism (308-311); M. Esculpi, Conformally symmetric spheres with surface pressure (314-319); R. Aquilano, W. Barreto and L. A. Nunez, Oscillatory luminosity profiles and the contraction of radiating spheres in general relativity (320-329); Roberto Hojman, Leda Pena and Nelson Zamorano, A scale invariant, general relativistic model for a galaxy in a dark matter background (330-336). Hugh Harleston L., Numerical solution of the Boltzmann equation in general relativity: formalism (348-354); Victor M. Villalba and Umberto Percoco, Creation of scalar and spin \(\frac 12\) particles in an expanding cosmological universe (385-391); Jemal Guven, Marcos Rosenbaum and Michael P. Ryan jun., Problems in the minisuperspace reduction of the Hilbert action (392-396); Juan Pablo Paz and Sukanya Sinha, Decoherence and backreaction in quantum cosmology (397-402);NEWLINENEWLINENEWLINEEsteban Calzetta, Anisotropy dissipation in the very early Universe (403-407); J. Socorro, O. Obregon and A. Macias, The square root of the Wheeler-DeWitt equation in cosmology (408-415); Henri Waelbroeck, \(2+1\) gravity as an exactly solved system (418-426); Gabriela Gonzalez and Jorge Pullin, A BRST approach to \(2+1\) gravity (427-431); F. Zertuche and L. F. Urrutia, The algebra of traces in some Chern-Simons theories (432-436); C. Aragone, P. J. Arias and A. Khoudeir, Einstein-Chern-Simons massive systems and self-dual spin-\(3\) (437-444). Jemal Guven and J. David Vergara, The geometrical functional integral for mini-superspace quantum gravity and the relativistic particle compared (445-453); Tonatiuh Matos and Guadalupe Rodriguez, One-dimensional subspaces of exact solutions of the \(n\)-dimensional Einstein's equations (456-462); A. Camacho, J. S. Garcia and O. Obregon, Nonperfect fluids in Kaluza-Klein cosmological models (463-467); Victor Tapia, The canonical structure of extrinsic gravity (468-474); J. Benitez and O. Obregon, \(5\)-dimensional scalar-tensor cosmologies as \(4\)-dimensional GR universes (475-479); P. Chauvet, J. Cervantes-Cota and H. N. Nunez Yepez, Spatially homogeneous vacuum space-time cosmological solutions for the Jordan Brans-Dicke theory in Bianchi-type universes (480-486); P. Chauvet, J. Cervantes-Cota and H. N. Nunez Yepez, Anisotropic degree measurement for Bianchi type models (487-491); A. Noe Morales and O. Pimentel, Cosmic strings of scalar fields: Brans-Dicke case (492-496); C. Aragone, A. Restuccia and R. Torrealba, Vanishing null energy solutions and Hamiltonian approach for membranes in the intrinsic light front gauge (497-503);NEWLINENEWLINENEWLINERicardo Becerril B. and Tonatiuh Matos Ch., Exact solutions from one-dimensional subspaces in Kaluza-Klein theory (504-509). Francisco Pardo, Helmholtz conditions for differential equations of any order (512-518); L. C. Garcia de Andrade, Cartan's torsion vector and spin-\(0\)-fields (519-521); Jorge Stephany, Soliton operators in two and three dimensions (522-528); Sergio A. Hojman and L. C. Shepley, Quantization requires a Lagrangian (529-531); A. Restuccia, Second quantised Hamiltonian for light cone gauge heterotic superstrings (532-535); M. Caicedo and A. Restuccia, BRST effective actions on phase space (536-541); Umberto Percoco and Victor M. Villalba, Quantum effects associated to a Dirac particle in an asymptotically uniformly accelerated frame (542-548).