I am a theoretical physicist with specialization in relativity, gravitation, and quantum field theory. My main work has been in curved space renormalization methods and black holes. The very long and tedious tensor calculations in this work lead me to symbolic computation via computer and thus to Mathematica. I was one of the very first users of what became Mathematica in the mid-1980's and using it, I co-wrote the tensor analysis system MathTensor, which has been sold as a commercial product for 25 years.
In the process of doing this work, I started the Mathematica mailing list which evolved into the comp.soft-sys.math.mathematica newsgroup that I moderated. More than 131,000 posts occurred in that group over the years. I am now a co-moderator of this Community effort.
My other work consists of the creation of packages for the Sun/Oracle operating system Solaris. This can be found in the http://sunfreeware.com and http://unixpackages.com web sites. I build and distribute thousands of such packages to many places in the government, military, academic, and business worlds in more than 200 countries and territories.
My consulting company provides assistance to organizations needing help in physics, mathematics, and computing projects and software.
I am also a very avid amateur astronomer and recently returned to academics as a Professor in the Department of Physics and Astronomy at the University of North Carolina at Chapel Hill.
Details of my education, work, and publications can be found on the pages at https://www.linkedin.com/profile/view?id=16262952&trk=spm_pic .