Use of symbolic manipulation techniques to examine gravitational and unified field theories

Three main objectives of this research project are discussed: (1) to carry out the third order expansion of the functional metric and to study the relation between radiation and the mostion of the sources; (2) to investigate the issue of the existance of gravitational radiation in Einstein's theory and the new theory, and to asses the possibility of using gravitational radiation as a possible means of transmitting information; and (3) to extend the capabilities of the MACSYMA system by introducing new tensor manipulation packages as well as new programs for the study of gravitational theories. The technical results of the project are presented, along with four papers on the topic of gravitational theories.