Detailed information on services, software, ordering, and pricing can be obtained at:
One of my major projects is the Solaris Project at: unixpackages.com
This project and the previous sunfreeware.com project have had over 500,000 users and has been the hightest ranked and longest running (nearly 19 years) Solaris related project outside of Sun Microsystems/Oracle. Many of its users are the largest governmental, educational, research, business, financial, and military organizations in the world who use Solaris based systems.
In addition to the services of sunfreeware.com and unixpackages.com, I also offer paid consulting on any and all issues with respect to open source software on Solaris compatible systems. If you or your organization needrapid or very specialized assistance with Solaris software, contact me using the information above and I will provide a quote.
I founded and moderate the MathGroup mailing list which is linked to the moderated newsgroup
on the Internet. This group is used by many Mathematica users to exchange ideas and get technical support from a community of thousands of Mathematica experts. More than 85,000 messages have been posted to this very active group.
Contact your local system administrator to find out how to read this newsgroup.
I provide access to the following software packages and can assist in the selection and purchase of other advanced mathematics-related products:
MathTensor is a product of MathTensor, Inc. MathTensor's functions and objects for doing tensor analysis are listed on the MathTensor Functionality page.
For details on ordering MathTensor, go to the MathTensor home page.
For information on the book about MathTensor go to MathTensor: A System for Doing Tensor Analysis by Computer.
Very Large Scale Pattern Matching Problem in MathTensor A talk presented at the Mathematica Developer's Conference, October, 1995, Urbana, Illinois.
A paper by S.Christensen showing some applications of MathTensor in theoretical physics - Computational Challenges in Heat Kernel Calculations.
The following list of major projects done recently will give a good idea of the kind of work I can do. I also have many years of expertise in the selection and use of all levels of computer hardware and software (commercial and freeware). Some examples are:
Because of its major and very quick success, other SunSITE projects were started by Sun around the world. Sun and the administrators at each SunSITE found many new ways to add value and interest to their local sites.
Reference letters and details can be supplied if requested.
His high school research work was in nuclear magnetic resonance, optical pumping, and electro-optics. While an undergraduate in the Physics Department Augustana College in Rock Island, Illinois, he ran the college's computer center at night and trained students and faculty in computer languages, Galois theory, as well as teaching a year long special and general relativity course. His research interests changed to theoretical relativity and quantum mechanics. He began the use of computer algebra systems in 1968.
In graduate school at the University of Texas Center for Relativity, he did research with Bryce DeWitt (who sadly passed away in 2004) and fellow student Larry Smarr on black hole computer simulations and then moved to the study of quantum field theory in curved spacetimes and renormalization theory. In 2005, Dewitt was named the second recipient of the Einstein Prize.
As a postdoctoral fellow at King's College, London, The University of Utah, Harvard, and UC-Santa Barbara's Institute for Theoretical Physics, he worked closely with Stephen Fulling, Michael Duff, Paul Davies and others on black holes, cosmology, fourth order quantum gravity and anomalies.
Since 1980, as a professor at the Universities of North Carolina and Illinois, he has taught undergraduate and graduate courses in relativity, quantum field theory, and quantum gravity. In the 1990's, he formed MathSolutions, Inc. (now MathTensor, Inc.) with Leonard Parker and later formed Christensen and Associates, Inc. and Unix Packages LLC.Send comments or questions to email@example.com