Hi, I have been lurking here for some time and decided it is time to come out in the open. Therefore I would like to be included in the group reading of GR. Cheers, Ralph -- Ralph Howard Phone: (803) 777-2913 Department of Mathematics Fax: (803) 777-3783 University of South Carolina e-mail: howard at math.sc.edu Columbia, SC 29208 USA http://www.math.sc.edu/~howard/